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Implementation and validation of the extended Hill-type muscle model with robust routing capabilities in LS-DYNA for active human body models

Overview of attention for article published in BioMedical Engineering OnLine, September 2017
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Title
Implementation and validation of the extended Hill-type muscle model with robust routing capabilities in LS-DYNA for active human body models
Published in
BioMedical Engineering OnLine, September 2017
DOI 10.1186/s12938-017-0399-7
Pubmed ID
Authors

Christian Kleinbach, Oleksandr Martynenko, Janik Promies, Daniel F. B. Haeufle, Jörg Fehr, Syn Schmitt

Abstract

In the state of the art finite element AHBMs for car crash analysis in the LS-DYNA software material named *MAT_MUSCLE (*MAT_156) is used for active muscles modeling. It has three elements in parallel configuration, which has several major drawbacks: restraint approximation of the physical reality, complicated parameterization and absence of the integrated activation dynamics. This study presents implementation of the extended four element Hill-type muscle model with serial damping and eccentric force-velocity relation including [Formula: see text] dependent activation dynamics and internal method for physiological muscle routing. Proposed model was implemented into the general-purpose finite element (FE) simulation software LSDYNA as a user material for truss elements. This material model is verified and validated with three different sets of mammalian experimental data, taken from the literature. It is compared to the *MAT_MUSCLE (*MAT_156) Hill-type muscle model already existing in LS-DYNA, which is currently used in finite element human body models (HBMs). An application example with an arm model extracted from the FE ViVA OpenHBM is given, taking into account physiological muscle paths. The simulation results show better material model accuracy, calculation robustness and improved muscle routing capability compared to *MAT_156. The FORTRAN source code for the user material subroutine dyn21.f and the muscle parameters for all simulations, conducted in the study, are given at https://zenodo.org/record/826209 under an open source license. This enables a quick application of the proposed material model in LS-DYNA, especially in active human body models (AHBMs) for applications in automotive safety.

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Mendeley readers

The data shown below were compiled from readership statistics for 55 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 55 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 15 27%
Student > Master 10 18%
Researcher 9 16%
Student > Doctoral Student 3 5%
Professor 2 4%
Other 4 7%
Unknown 12 22%
Readers by discipline Count As %
Engineering 31 56%
Mathematics 1 2%
Nursing and Health Professions 1 2%
Biochemistry, Genetics and Molecular Biology 1 2%
Physics and Astronomy 1 2%
Other 3 5%
Unknown 17 31%