Hyperelastic materials for Nastran analyses

A hyperelastic material is a type of constitutive material model that is used to analyze materials that can experience large elastic strain that is recoverable. Examples of hyperelastic materials include, for example:

• elastomers

• rubber

• elastomeric foams

The stress-strain relationship of hyperelastic materials is derived from a strain energy density function.

• In a Simcenter Nastran or MSC Nastran basic nonlinear analysis (SOL 106), you can create a Hyperelastic-general type material from the Manage Materials dialog box to use a generalized Mooney-Rivlin or Neo-Hookean strain energy density function.

• In a Simcenter Nastran advanced nonlinear analysis (SOL 601, SOL 701, and SOL 402), you can create a hyperelastic material using several different strain energy density functions, as shown in the table below.Note: In a SOL 701 analysis, you can apply hyperelastic materials only to 3D solid elements. For more information, see Hyperelastic material models in the Advanced Nonlinear Solution — Theory and Modeling Guide.

The following table summarizes the different types of Nastran hyperelastic materials that you can create from the Manage Materials dialog box.

Hyperelastic material type	Description	Corresponding Nastran bulk data entry	Supported solution sequences	Viscoelasticity support
Hyperelastic-general	Creates a hyperelastic material with the Mooney-Rivlin or Neo-Hookean model that you can use to analyze elastomers up to a large strain in a standard Simcenter Nastran or MSC Nastran nonlinear analysis.	MATHP	SOL 601, 106SOL 701SOL 402	No
Arruda-Boyce	Creates a hyperelastic material with the Arruda-Boyce material model for Simcenter Nastran advanced nonlinear analyses.	MATHE	SOL 601	Yes
Foam	Creates a hyperelastic foam material for modeling highly compressible elastomers in Simcenter Nastran advanced nonlinear analyses.	MATHE	SOL 601SOL 402	Yes
Gasket	Creates a material that you can use to model a thin component that can be placed between two surfaces or bodies to create a sealing effect.	MATG	SOL 601SOL 701SOL 402	No
Mooney-Rivlin	Creates a hyperelastic material with the Mooney-Rivlin material model for Simcenter Nastran advanced nonlinear analyses.	MATHE	SOL 601SOL 701SOL 402	Yes
Ogden	Creates a hyperelastic material with the Ogden material model for Simcenter Nastran advanced nonlinear analyses.	MATHE	SOL 601SOL 701SOL 402	Yes
Shape Memory Alloy	Creates a material that remembers its original, cold-forged state. You can use this material to simulate the superelasticity behavior of shape memory alloy materials due to the reversible phase transformation of austenite and martensite.	MATSMA	SOL 601,106	No
Sussman-Bathe	Creates a nearly incompressible hyperelastic material with the Sussman-Bathe material model for Simcenter Nastran advanced nonlinear analyses.	MATHE	SOL 601SOL 701	Yes

For more information, see Defining a general hyperelastic material for Nastran analyses.

How do I

Define a Hart-Smith material

Define an Alexander material

Define an Hyperfoam material (Simcenter Samcef)

Define a Mooney-Rivlin material (Simcenter Samcef)

Define an Ogden material (Simcenter Samcef)

Learn more

Hyperelastic materials (Simcenter Samcef)

Gasket material properties overview (Simcenter Samcef)

Look up more details

Hyperelastic, gasket, and shape memory alloy material models

Defining a general hyperelastic material for Nastran analyses

Defining a gasket displacement material for ANSYS analyses

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

Browse Simcenter 3D help by product area

Hyperelastic materials for Nastran analyses, Simcenter 3D 2021.1 Series

© 2020 Siemens

window.mainLanguage="en_US"

window.delivId=""

window.projectId=""

MathJax.Hub.Config({ TeX: { extensions: ["autoload-all.js"] }, tex2jax: { displayMath: [ ] }, "SVG": { scale: 125 } });