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A universal material model subroutine for soft matter systems.

Mathias Peirlinck1, Juan A Hurtado2, Manuel K Rausch3

  • 1Department of BioMechanical Engineering, Faculty of Mechanical Engineering, Delft University of Technology, Delft, the Netherlands.

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|May 15, 2025
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Summary
This summary is machine-generated.

A new universal material subroutine simplifies the integration of complex material models into finite element analysis (FEA) software. This tool enables reliable soft material simulations for researchers without requiring deep expertise in mechanics or programming.

Keywords:
Constitutive modelingFinite element methodMaterial modelingSoft matterTissue mechanics

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Area of Science:

  • * Computational mechanics
  • * Materials science
  • * Biomedical engineering

Background:

  • * Soft materials are crucial for autonomy, sustainability, and health, necessitating accurate modeling.
  • * Existing finite element analysis (FEA) packages have limited material models, restricting analysis of complex soft materials.
  • * Integrating novel material models into FEA requires advanced knowledge of continuum mechanics, tensor algebra, and programming, often leading to errors.

Purpose of the Study:

  • * To develop a universal material subroutine that automates the integration of novel constitutive models into non-linear FEA packages.
  • * To eliminate the need for additional analytical derivations and algorithmic implementations when incorporating new material models.
  • * To empower a wider range of users, not just experts, to perform reliable soft material simulations.

Main Methods:

  • * Design and implementation of a universal material subroutine for FEA.
  • * Automation of the integration process for constitutive models of varying complexity.
  • * Validation through diverse soft matter case studies.

Main Results:

  • * Successful integration of innovative constitutive models across material point and structural levels.
  • * Demonstrated versatility in simulating complex soft material behaviors.
  • * Enabled reliable engineering analysis for various soft matter systems.

Conclusions:

  • * The universal material subroutine significantly simplifies the incorporation of novel material models in FEA.
  • * This framework democratizes advanced soft material simulation, making it accessible to non-experts.
  • * The subroutine is poised to become an essential tool for innovation in soft matter research and engineering.