High strain rate compressive behaviour of human heart

Body armor protects the human from penetrating injuries. However, in the process of defeating a projectile, the back face of the armor can deform into the wearer at extremely high rates. This deformation can cause a variety of soft and hard tissue injuries. Finite element modeling represents one of the best tools to predict injuries from this high-rate compression mechanism. However, the validity of a model is reliant on accurate material properties for biological tissues. In this study, we measured the stress-strain response of thoraco-abdominal tissue during high-rate compression (1000 and 1900 s-1) using a split Hopkinson pressure bar. Using this method, high-rate material properties of porcine adipose, heart, spleen, and stomach tissue were characterized. At a strain rate of 1000 s-1, adipose (E=4.7MPa) was the most compliant, followed by spleen (E=9.6MPa), and then heart (E=13.6MPa) tissue. At a strain rate of 1900 s-1, adipose (E=7.3MPa) was most compliant, followed by spleen (E=10.7MPa), heart (E=14.1MPa), and stomach (E=32.6MPa) tissue. Only adipose tissue demonstrated a consistent rate dependence across these rates, with a stiffer response at 1900 s-1. However, comparison of these tissues to previously published quasi-static and intermediate dynamic experiments revealed a strong rate dependence with increasing stress response from quasi-static to dynamic to high strain rates. Together, these findings can be used to develop finite element models for high-rate compression injuries.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

High strain rate compressive behaviour of human heart

Cited by 2 publications

References 0 publications

Strain-rate-dependent material properties of human lung parenchymal tissue using inverse finite element approach

Strain-rate-dependent material properties of human lung parenchymal tissue using inverse finite element approach

Response of Thoraco-Abdominal Tissue in High-Rate Compression

Contact Info

Product

Resources

About