冲击载荷下猪后腿肌肉的横向同性本构模型  

A transversely isotropic constitutive model for porcine ham muscle under impact loading

作　　者：王宝珍[1] 胡时胜[1] 

机构地区：[1]中国科学技术大学中国科学院材料力学行为和设计重点实验室,安徽合肥230026

出　　处：《爆炸与冲击》2011年第6期567-572,共6页Explosion and Shock Waves

基　　金：国家自然科学基金项目(10772170;11102206)~~

摘　　要：基于纤维增强复合材料连续介质力学理论及粘弹性理论,提出了猪后腿肌肉的率相关本构模型。通过拟合以往研究中猪后腿肌肉的SHPB和SHTB实验应力应变曲线,确定了本构模型的相关参数。结果表明:提出的本构模型既能描述猪后腿肌肉沿纤维方向的动态压缩力学性能又能描述其动态拉伸性能,理论模型与实验模型有较好的一致性。该结果可为安全防护数值模拟提供一定的理论依据。Based on the continuum medium mechanics theory of fiber reinforced composite materials and the viscoelastic theory, a rate-dependent constitutive model was proposed for porcine ham muscle. The model parameters were gained by fitting the constitutive equations to the stress-strain curves which were obtained in the previous SHPB and SHTB tests. The results exhibit that the proposed model can describe the dynamic compressive and tensile mechanical properties of porcine ham muscle along the fiber direction. The consistency between the model and the experiment shows that the study can give a theory foundation for the numerical simulation of the security protection systems.

关 键 词：固体力学 本构模型 横向同性 肌肉 

分 类 号：O347.3[理学—固体力学] Q66[理学—力学]