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Related Experiment Video

Updated: Jul 9, 2025

A Coupled Experiment-finite Element Modeling Methodology for Assessing High Strain Rate Mechanical Response of Soft Biomaterials

A Coupled Experiment-finite Element Modeling Methodology for Assessing High Strain Rate Mechanical Response of Soft Biomaterials

Published on: May 18, 2015

A systematic comparison between FEBio and PolyFEM for biomechanical systems.

Liam Martin¹, Pranav Jain², Zachary Ferguson²

¹University of Pittsburgh Swanson School of Engineering, USA.

Computer Methods and Programs in Biomedicine

|December 6, 2023

Summary

This summary is machine-generated.

PolyFEM, a new finite element solver, successfully replicates FEBio simulations and excels in complex, high-energy contact scenarios without manual tuning. This offers enhanced accuracy for biomechanical analyses.

Keywords:

Benchmark Contact Finite element analysis Finite element verification Large deformation

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Area of Science:

Computational Biomechanics
Finite Element Analysis
Numerical Methods

Background:

Traditional finite element software struggles with contact detection in complex biomechanical simulations, often requiring extensive model tuning.
Existing solvers face limitations in handling inversion- and intersection-free solutions, hindering accurate biomechanical predictions.
This necessitates a more robust and automated approach for finite element simulations in biomechanics.

Purpose of the Study:

To introduce and validate PolyFEM, a novel finite element solver designed for inversion- and intersection-free biomechanical simulations.
To compare PolyFEM's performance against the established FEBio solver across various simulation scenarios.
To assess PolyFEM's capability in handling complex contact mechanics and high-energy collisions.

Main Methods:

Five distinct comparison scenarios were designed to rigorously evaluate PolyFEM against FEBio.
Simulations included reproducing existing FEBio test cases, verification paper scenarios, biomechanical contact problems, high-energy collisions, and biting/quasi-stance simulations.
Performance was assessed based on accuracy, simulation failure rates, and the need for manual model tuning.

Main Results:

PolyFEM successfully replicated all simulations performed using FEBio.
PolyFEM demonstrated superior performance in high-energy contact simulations, completing scenarios where FEBio failed.
PolyFEM achieved accurate results without requiring additional model tuning or explicit contact declarations, despite longer simulation times in some cases.

Conclusions:

PolyFEM provides verified solutions for hyperelastic materials, consistent with FEBio, even in early development stages.
The solver effectively handles challenging biomechanical problems, outperforming existing solvers in complex contact scenarios.
PolyFEM holds significant potential to improve the accuracy and realism of future finite element analyses in biomechanics.