Constitutive modeling of nonlinear strain and time dependent behaviors of ballistic gelatin at low strain rates

Autor:	Chuan Ding, Li Liu, Qianqian Lu
Rok vydání:	2020
Předmět:	Condensed Matter::Soft Condensed Matter Polynomial (hyperelastic model) Simple shear Condensed Matter::Materials Science Nonlinear system Materials science Ballistic gelatin Strain (chemistry) Relaxation (physics) Composite material Condensed Matter Physics Compression (physics) Strain energy
Zdroj:	Mechanics. 26:191-196
ISSN:	2029-6983 1392-1207
Popis:	The present study is concentrated in constitutive modeling of ballistic gelatin at low strain rates. The relaxation tests, simple shear tests at strain rates ranging from 0.0005/s to 1.245/s and uniaxial compression tests at engineering strain rates ranging from 0.004/s to 0.208/s are carried out, and nonlinear strain and time dependent behaviors of ballistic gelatin are observed. A visco-hyperelastic model is proposed based on the Prony series and the reduced polynomial strain energy potential. The material parameters are obtained by fitting to the data of the relaxation and simple shear tests and validated by predicting the compression stress-strain relationships in the uniaxial compression tests. The nonlinear strain and time dependent behaviors of ballistic gelatin are well captured by the model proposed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::99e9e1742185e89903db8ab33d4e1ae9 https://doi.org/10.5755/j01.mech.26.3.22000 Zobrazit plný text záznamu Plný text ve formátu PDF