Efficient algorithm for 3D bimodulus structures
为 3D bimodulus 结构的有效算法作者机构：Key Laboratory of Road Structure and Material of Ministry of Transport(Changsha)School of Traffic and Transportation EngineeringChangsha University of Science&TechnologyChangsha410114China School of Engineering and Materials ScienceQueen Mary University of LondonLondonE14NSUK
出 版 物：《Acta Mechanica Sinica》 (力学学报（英文版）)
年 卷 期：2020年第36卷第1期
页 面：143-159页
核心收录：
学科分类：08[工学] 0801[工学-力学（可授工学、理学学位）]
基 金：the National Natural Science Foundation of China(Grant 51908071) Scientific Research Project of Education Department of Hunan Province(Grant 18C0194) Open Fund of Key Laboratory of Road Structure and Material of Ministry of Transport,Changsha University of Science&Technology(Grant kfi 170303)
主 题：Elastic theory Bimodulus material 3D complemented algorithm Finite element method Generalized elastic law General 3D shear modulus
摘 要：The bimodulus material is a classical model to describe the elastic behavior of materials with tension-compression *** to the inherently nonlinear properties of bimodular materials,traditional iteration methods suffer from low convergence efficiency and poor adaptability for large-scale structures in *** this paper,a novel 3D algorithm is established by complementing the three shear moduli of the constitutive equation in principal stress *** contrast to the existing 3D shear modulus constructed based on experience,in this paper the shear modulus is derived theoretically through a limit ***,a theoretically self-consistent complemented algorithm is established and implemented in ABAQUS via UMAT;its good stability and convergence efficiency are verified by using benchmark *** analysis shows that the calculation error for bimodulus structures using the traditional linear elastic theory is large,which is not in line with reality.
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