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Simcenter 3D
Structural Dynamics Simulation

Simcenter™ 3D software provides a comprehensive solution for understanding, analyzing and improving response when a system is subjected to dynamic loading. This includes Simcenter Nastran® software , the industry standard for dynamic analysis, as well as interactive solutions for general dynamic analysis to efficiently understand and prevent excessive vibrations and stresses. In addition, dedicated resources are available for noise, vibration and harshness (NVH) engineering, rotor dynamics and correlation.

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Benefits of the solution

Advanced Structural Dynamics Prediction

NVH and rotor dynamics

Uniquely combine real-world test data into the simulation

Increasing confidence in dynamic FE models

Providing a platform for multidisciplinary simulation

  • Perform comprehensive dynamic analysis and accelerate time to market

  • Increase design confidence by using Simcenter Nastran to investigate product performance under dynamic operating conditions

  • Gain insights and improve NVH performance through a dedicated toolset for NVH post-processing and troubleshooting

  • Combine FE with measured data like loading or component description for more realistic simulations and hybrid assemblies

  • Quickly assess and improve the dynamic performance of rotating systems

  • Improve accuracy and increase confidence in your FE models by correlating with real measured data

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From the product concept phase, analysts and specialists can rely on Simcenter's 3D structural dynamics solutions to analyze design decisions and systematically improve the system's dynamic characteristics. Simcenter 3D's graphical user interface (GUI) is fully customizable to suit your dynamic analysis processes, creating predefined models and simplifying the product engineering process.

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Interactive solutions and dedicated solvers are available to support industry workflows for NVH and rotating machine dynamics.

Using Simcenter 3D for structural dynamics solutions allows you to implement a distinct hybrid simulation approach to leverage measured data as a component representation in a finite element (FE) model at the system level or apply real loads to accurately accelerate and robustness to process engineering.

An integral part of making product engineering decisions is having confidence in simulation models so you can accurately predict reality. Correlation solutions allow validating and improving the dynamic behavior of simulation models based on physical test data.

The Simcenter 3D structural dynamics solution is part of a larger multidisciplinary simulation environment and is integrated with the Simcenter 3D Engineering Desktop at the core for centralized pre/post processing for all Simcenter 3D solutions. This integrated environment helps you achieve faster CAE processes and streamline multidisciplinary simulations that integrate dynamics and other disciplines such as computing dynamic loads of motion, flow, or electromagnetic solution.

Industry applications

Automotive and transport

Aerospace and Defense

Industrial machinery

Electronics and consumer goods

Marine

As most systems are subject to loads of a dynamic nature at some point in their life cycle, understanding the dynamic behavior of structures is an important topic in many fields. Simcenter 3D provides a complete solution for predicting dynamic behavior, whether for a component, subsystem or the entire system.

NVH performance strongly affects the driving experience and perception of quality. Simcenter 3D offers built-in tools and solvers to predict NVH characteristics and analyze the root cause of noise and vibration issues.

Simcenter 3D helps you identify structural weaknesses in a given design and optimize the vibration and dynamic performance of aircraft structures subjected to dynamic loading.


Dedicated solutions for rotor dynamics help you evaluate the performance of aircraft engines to avoid instabilities.

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Machines that vibrate excessively during operation directly impact the quality of the manufactured product. Simcenter 3D provides information about the possible cause of machine vibrations, including rotating machines.

Simcenter 3D helps predict the dynamic characteristics of electronics and consumer goods to prevent excessive vibrations and stresses that can result in fatigue or catastrophic failure.

With an increasing demand for faster, lighter ships, design engineers can rely on Simcenter 3D to predict the response of the overall structure and its individual components that are subject to wave and current action.

Sectors
 

Modules

 

Simcenter 3D Response Dynamics software is an integrated solution that makes dynamic analysis more accessible and efficient for the analyst. It allows you to predict the forced response of structural systems under various loading conditions in a single graphical user environment, thus eliminating the complexity of setting up and starting the analysis and providing a quick view of dynamic behavior. The analysis information can then be used to conduct design studies to improve the new product development process and confirm the quality of designs prior to physical prototyping and production.

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Simcenter 3D Noise and Vibration Modeling offers a comprehensive set of pre/post noise and vibration capabilities that address your need to build, understand, evaluate, and optimize the noise and vibration performance of complete systems and assembly models.

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Operating loads or vibrations are very important for accurate response prediction, but are often impossible or difficult to measure directly. Simcenter 3D Load Identification allows you to get accurate dynamic loads from a structure for dynamics or acoustics.

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Simcenter 3D Load Identification offers two ways to identify operating forces from measured data, either a direct stiffness method or an inverse matrix method. Using the direct stiffness approach, the relative displacement (or velocity or acceleration) of the input vibration data and input frequency response functions (FRFs) are used to calculate the forces at the locations of the nodes in your element model. finite (FEM). The inverse matrix method allows you to calculate an estimate of operational loads based on operational measurements such as measured accelerations and FRFs.

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Furthermore, Simcenter 3D Load Identification can also be applied to acoustic applications. You can use a modal expansion solution to create enriched vibration results in a full FE model based on measured vibrations at just a few points. Or, you can derive structural surface vibrations using inverse numerical acoustics, where pressure responses measured close to the structure are used along with acoustic transfer vectors (ATVs) to identify complete surface vibrations. The obtained vibration field can therefore be used for acoustic radiation analysis.

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The Simcenter 3D Noise and Vibration Response product gives users the ability to perform modal-based forced response, FRF-based forced response, and FRF synthesis to gain insight into the vibration or vibroacoustic performance of a system. It is an alternative for users who have third-party structural solvers or for users who cannot subscribe to Simcenter Nastran.

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For example, modal-based forced response is particularly useful in many scenarios that start in ANSYS or ABAQUS modes, or measured modes. One can, for example, use the Simcenter 3D Noise and Vibration Forced Response product to calculate surface vibration results that can later be used in an analysis to predict acoustic radiation.

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Another example is the FRF-based forced response solver which provides a convenient and fast way to calculate the structural or vibroacoustic response of a system that is described by simulated or measured FRFs under operational load. This can be followed by TPA analysis using Simcenter 3D Noise & Vibration Modeling.

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Simcenter 3D NVH Composer is a simplified product to create full vehicle level FE models for NVH from sub-assembly models (BIW, Door, Suspension...).

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The product offers an interactive network display to define the topology of the complete vehicle assembly, defining components, connectivity information and grouped mass information. Once the complete vehicle layout is defined, the assembly is automatically created in Simcenter 3D and is synchronized with the network view, which is a simplified way to interact with the complete vehicle assembly. All typical connections between complete vehicle subsystems are available and modeling is done for Simcenter Nastran.

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Simcenter 3D FE Model Correlation software allows you to quantitatively and qualitatively compare simulation and test results, as well as two different simulations. It provides the necessary tools to geometrically align the models, pair the shapes of both solutions, visualization mode and operational shapes and frequency response functions, and calculate/display correlation metrics.

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Simcenter 3D FE Model Updating software is an advanced correlation tool designed to automatically update FE models to match real-life test data or other FE model results. The tool is fully integrated into Simcenter 3D Engineering Desktop, making the upgrade process efficient, intuitive and productive.

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Simcenter 3D Rotor Modeling is a comprehensive environment for pre- and post-processing models used for rotor dynamics analysis using the Simcenter Nastran Rotor solver. Simcenter 3D Rotor Modeling guides you through the typical workflow of defining your rotors, bearings, and assemblies, and then helps you configure the parameters of your simulation solution. Simcenter 3D Rotor Modeling also takes full advantage of the core features of Simcenter 3D Engineering Desktop to easily edit model geometry and keep your rotor simulation models in sync with your design. The rotor modeling environment is where you can also efficiently evaluate the results of your simulations visually and graphically so you can easily determine if your rotor designs are meeting your needs.

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Simcenter Nastran Dynamic Response software is the leading solver for dynamic finite element analysis (FEA). It allows the analysis of the forced response of a component or assembly subject to excitations that vary in time or frequency. Evaluating dynamic response under different operating conditions is critical for industries such as automotive, aerospace, consumer products, and other industries that rely on electronic devices. Multiple what-if studies can be performed virtually investigating product performance under various dynamic operating conditions using the rich set of analysis tools supported by Simcenter Nastran Dynamic Response.

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Simcenter Nastran Advanced Dynamics is a cost-effective package that provides a set of advanced and commonly used dynamics functionality, which includes Simcenter Nastran Dynamic Response, Simcenter Nastran FRF representations, Simcenter Nastran superelement analysis, recursive domain (RD) modes of Simcenter Nastran, Simcenter Nastran DMP (distributed memory processing), Simcenter Nastran aeroelasticity and Simcenter Nastran direct matrix abstraction program (DMAP).

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Simcenter Nastran DMP facilitates a significant reduction in computing time using multiple processors and computing resources. Simcenter Nastran DMP allows for a higher level of parallelism and offers better scalability than shared memory processing (SMP).

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Simcenter Nastran Rotor is the solver to simulate a variety of rotor dynamics analyzes for mechanical engineers studying industrial rotating machine applications such as gas turbines, pumps and more. Understanding critical operating speeds and predicting survivability of rotating systems is a critical but challenging task. Simcenter Nastran helps you determine these critical criteria by taking into account gyroscopic effects and centrifugal loads in a wide variety of situations.


Pre- and post-processing of the Simcenter Nastran Rotor is done using the Simcenter 3D Rotor Modeling product.

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Module benefits:

  • Get quick insights into the dynamic response of structural systems

  • Quickly generate and visualize results graphically

  • Take full advantage of Simcenter 3D to make quick design changes and provide quick feedback on dynamic performance

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Main features:

  • ​Predict model response to transients, frequency (harmonic), random vibration, shock spectrum, dynamic design analysis (DDAM) method (ship shock loads) and quasi-static loads

  • Efficiently compute responses using a modal formulation from an a priori resolved set of Simcenter Nastran mode shapes

  • Import, generate, and edit computer-aided engineering analysis (CAE) excitation information and test data, including force, forced motion, and distributed loads (e.g., dynamic pressure)

  • Seamless interface analytical models with measured test data for measured accelerations per instance used for base excitation loading

  • Best-in-class random excitation and sine-base events that handle real-world models with unrivaled performance and accuracy

Module benefits:

  • Gain valuable insights into your project's noise and vibration performance

  • Use data from previous measurements and simulations to create relevant

  • Use reduced, dynamically equivalent representations of components in your assembly model to speed response analysis

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Main features:

  • Intuitive noise and vibration diagnostics with support for modal analysis, network, panel, energy and path contribution

  • Map test data and predecessor simulation data - multibody, electromagnetism (EM), computational fluid dynamics (CFD) - into the vibroacoustic simulation model, including time-to-frequency domain conversion for realistic loads

  • Add frequency response function (FRF) and modal representations for structural members in the context of assembly using simulation or test data

  • Include acoustic transfer vectors (ATV) or vibroacoustic transfer vectors (VATV) representations for acoustic or vibroacoustic components, which are reusable for multi-load case scenarios for powertrain noise or cabin wind noise

Module benefits:

  • Determine operating forces or vibrations that are difficult or impossible to measure directly

  • Get a more realistic simulation by applying more accurate loading

  • Combine measured loading data with FE simulations

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Main features:

  • Assembly method for estimating assembly forces by combining operational vibration data on each side of the assembly and assembly stiffness data

  • Inverse matrix method by combining operational measurements and transfer functions

  • Based on all measured data or a combination of operation measurements and simulation data

  • Direct application and reuse of forces or vibrations identified in the simulation model

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Module benefits:

  • Dedicated modal and FRF based forced response solvers supporting NVH and Acoustics scenarios.

  • Allowing users to run a forced response without access to a full structural solver such as Nastran

  • Quickly calculate FRFs from measured or simulated modes for use in NVH or as a reduced FRF representation of a component in an assembly or for use in correlation

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Main features:

  • The FRF-based forced response solver provides a convenient and fast way to calculate the structural or vibroacoustic response of a system described by simulated or measured Frequency Response Functions (FRFs) under operational load

  • The Modal-based forced response solver provides a convenient way to calculate the structural (vibration) response of a system described by a set of modes under operational load.

  • The FRF Synthesis Solver allows you to calculate FRFs from a set of simulated mode measurements

Module benefits:

  • Increase productivity and accelerate total vehicle creation time

  • Decrease human error by capturing assembly topology in layout files

  • Eliminate the complexity of creating a complete vehicle assembly model

  • Easily rerun in case of component changes

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Main features:

  • Interactive network view to define complete vehicle topology from subsystem FE models

  • All typical complete vehicle connections are supported (bolt, bushing, caulking/sealing strip,…)

  • Agglomerated dough cutting support

  • Automatic assembly from the defined complete vehicle topology

  • Built-in scan functionality

  • Automatic synchronization between Simcenter 3D NVH Composer and the resulting Simcenter 3D assembly

Module benefits:

  • Validate finite element model accuracy for dynamic structural, acoustic, and vibroacoustic analysis

  • Determine sensor and exciter locations before performing physical modal tests

  • Increase productivity by enabling model validation in the same environment used for model creation and analysis

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Main features:

  • Supports Simcenter Nastran, Simcenter Samcef® software, Abaqus, ANSYS and MSC Nastran results

  • Test solution import using universal files or Simcenter Testlab™ software files

  • Pre-test planning, including sensor and exciter placement, automatic or manual preview wireframing, as well as automatic normal face detection

  • Intuitive and powerful test template alignment

  • Shape correlation criteria (MAC, X-Ortho, frequency), automatic and manual shape pairing options

  • Interactive matrix and shape displays

  • Frequency Response Function Assurance Criterion (FRAC)

  • Interactive overlay graphics of FRAC and FRF

  • Node mapping based on proximity, labels or names, as well as manual methods

Module benefits:

  • Improve accuracy and increase confidence in your FE models

  • Increase productivity by performing model upgrade in the same environment used for model creation and analysis

  • Provide a quick sensitivity-based approach

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Main features:

  • Optimization goals: modal frequencies and mode shapes

  • Mode Shape Correlation Criteria: MAC, X-Ortho

  • Automatic and manual mode pairing options

  • Simultaneously update multiple configurations of the same FEM

  • Automatic FEM update that can be easily cascaded to all simulations

  • Automatic and manual project variable management

  • Automatic generation of multiple design variables

  • Support material and physical property design variables such as beam section areas, shell or laminate thickness, and Young's modulus

  • No Simcenter Nastran or MSC Nastran SOL 200 licenses required

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Module benefits:

  • An integrated solution that helps you quickly solve and iterate on your rotor designs to achieve optimal performance

  • Understand how your rotor performs in unbalance analysis, predict a blade loss event and determine critical speeds

  • Guides you through a complete end-to-end workflow from impeller and bearing modeling, solution configuration, and results visualization

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Main features:

  • Addresses a wide range of loading scenarios such as unbalanced loads, misalignment, time dependent forces and more

  • Efficient modeling techniques and model reduction like multi-harmonic Fourier elements or cyclic symmetry or superelement

  • Wide range of post-processing capabilities for Campbell diagram, energy distributions, animations of modes and deformed shapes, orbit plots, recombination of 3D results

  • Model the rotors and stator parts of the assembly by different modeling approaches using efficient model reduction and connect the components by a collection of linkers

Module benefits:

  • Evaluate the dynamic performance of your physical model

  • Applies to all applications, industries and model sizes

  • Save time and cost compared to physical buildtest-break cycles

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Main features:

  • Comprehensive dynamic response set. Supports frequency, transient, complex eigenvalue, random response, shock spectrum and other analysis

  • Includes a list of eigenvalue solvers like Lanczos, Householder, Hessenberg, etc.

  • Supports various types of dynamic loading in both time and frequency domains

  • Fast frequency response solvers applicable to large models

Module benefits:

  • Use a cost-effective package to perform comprehensive dynamic analysis and accelerate time to market

  • Build system assembly models using a hybrid assembly of components based on finite elements and test measurements or reduced-order models

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Main features:

  • Includes all features of Simcenter Nastran Dynamic Response

  • Includes Simcenter Nastran FRF representation

  • Calculates the forced response of a product subject to time- or frequency-varying excitations

  • Represents a component as a frequency response function, an alternative form of matrix representation of a component

  • Large models consisting of over 300 modes can be efficiently solved using recursive domain normal modes (RDMODES)

  • Analyze structural models in the presence of an air current using aeroelastic analysis

  • Modify and adapt out-of-the-box (OOTB) solution strings using DMAP

Module benefits:

  • Quickly solve large complex problems

  • Use the DMP solution to solve big problems over 100 times faster than the Lanczos method on a single processor

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Main features:

  • Simcenter Nastran has many options to partition solution domains such as geometric, frequency, hierarchical, load and recursive domain partitioning

  • DMP can also be operated on a single node that has multiple processors

  • Supported dynamic solution types are modal and direct frequency response, eigenvalue computing, and modal transient

Module benefits:

  • Simulate and evaluate the rotor dynamics performance of your physical model

  • Calculate critical speeds and find turning frequencies to avoid catastrophic failures of rotating machines

  • Evaluate from simple models with linear bearings to complex systems with non-linear connections

  • Breadth of analysis capabilities to cover a wide variety of loading scenarios

  • Reduce modeling time and speed up time to solution through modeling techniques such as multiharmonic Fourier elements or cyclic symmetry or superelements

  • Save time and cost compared to physical build and test cycles

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Main features:

  • Calculate the Campbell diagram, with critical speeds and eddy frequencies

  • Simulate using frequency-dependent (synchronous or asynchronous, modal or direct) or time-dependent excitation loads or switching

  • Consider the geometric non-linearities of the connection elements in the simulation

  • Supports typical rotor dynamics scenario such as unbalanced load or analysis or blade misalignment

  • Consider the geometric non-linearities of the connection elements in the simulation

  • Analyze models of symmetrical and asymmetrical rotors, as well as multiple rotors with different rotational speeds

  • Include differential stiffness to calculate centrifugal softening effects

  • Solve the model in fixed or rotating coordinate reference system

 

 

 

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Simcenter 3D Noise and Vibration Modeling

 

 

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Simcenter 3D Load Identification

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Simcenter 3D Noise and Vibration Response

 

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Simcenter 3D NVH Composer

 

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Simcenter 3D FE Model Correlation

 

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Simcenter Nastran Advanced Dynamics bundle

 

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Simcenter Nastran DMP

 

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Simcenter Natran Dynamic Response

 

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Simcenter 3D Rotor Modeling

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Simcenter 3D FE Model Updating

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Simcenter 3D Response Dynamics

 

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Simcenter Nastran Rotor

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