An alternative form of energy density demonstrating the severe strain-stiffening in thin spherical and cylindrical shells

作     者：Md.Moonim Lateefi Deepak Kumar Somnath Sarangi Moonim Lateefi;Deepak Kumar;Somnath Sarangi

作者机构：Department of Mechanical EngineeringIndian Institute of Technology PatnaBihar801103India Department of Mechanical EngineeringMaulana Azad National Institute of Technology BhopalMadhya Pradesh462003India 

出 版 物：《Theoretical & Applied Mechanics Letters》 (力学快报（英文版）)

年 卷 期：2022年第12卷第4期

页      面：294-300页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

主　　题：Hyperelastic material Strain-stiffening Constitutive modeling Strain energy function 

摘      要：The present article investigates an elastic instability phenomenon for internally pressurized spherical thin balloons and thin cylindrical tubes composed of incompressible hyperelastic material.A mathematical model is formulated by proposing a new strain energy density *** the family of limited elastic materials,many material models exhibit ***,they fail to predict severe strainstiffening in a moderate range of deformations in the stress-strain *** proposed energy function contains three material parameters and shows substantially improved stain stiffening properties than the limited elastic material *** model is further applied to explore the elastic instability phenomenon in spherical and cylindrical *** findings are compared with other existing models and validated with experimental *** model shows better agreement with experimental results and exhibits a substantial strain-stiffening effect than the current models.