What are porous elastomeric materials?

Modeling Porous Elastomers: Porous elastomeric materials are widely used in industrial and commercial applications, especially as shock-absorbers, dampers, packaging material, etc.

Engineering applications

Oftentimes these applications involve very large deformations of the material. From a product design and performance perspective, engineers are usually interested in the macroscopic response of these materials and their interaction with other components in an assembly. Appropriate modeling of the macroscopic mechanical response of these materials under arbitrarily large deformations is, therefore, the main requirement for engineering applications.

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Constitutive model

A number of constitutive models have been proposed in recent years to describe the macroscopic elastic response of porous elastomers based on homogenization solutions. Among those, the model proposed by Shrimali et al. is remarkably simple, accurate, and very suitable for implementation in Abaqus using the UHYPER user subroutine.

Examples for Modelling Porous Elastomers

To demonstrate the applicability of the homogenization model and the associated UHYPER user subroutine, presented in this product are several examples of industrial interests with relatively simplified geometries based on models already available in the Abaqus Example Problems Manual. The details of the model setup can be found in the product and hence will not be elaborated here. The input files used to produce the results shown are attached to the product.

1. Example 1: Rubber bushing model
2. Example 2: Windshield wiper model
3. Example 3: Viscoelastic bushing model
4. Example 4: Automotive boot seal model