Numerical calculation of the tangent stiffness matrix in materials modeling
Numerical calculation of the tangent stiffness matrix in materials modeling
复制标题
材料建模中切向刚度矩阵的数值计算
DOI:
10.1002/pamm.201410200
复制
发表时间:
2014
期刊:
影响因子:
--
通讯作者:
E. Werner
中科院分区:
文献类型:
--
作者:
F. Meier;C. Schwarz;E. Werner
The Finite Element Method in the field of materials modeling is closely connected to the tangent stiffness matrix of the constitutive law. This so called Jacobian matrix is required at each time increment and describes the local material behavior. It assigns a stress increment to a strain increment and is of fundamental importance for the numerical determination of the equilibrium state. For increasingly sophisticated material models the tangent stiffness matrix can be derived analytically only with great effort, if at all. Numerical methods are therefore widely used for its calculation. We present our method to calculate the tangent stiffness matrix for the logarithmic strain measure. The approach is compared with other commonly used procedures. A significant increase in accuracy can be achieved with the proposed method. (© 2014 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)
DOI:
10.1016/j.msea.2013.02.067
发表时间:
2013
影响因子:
6.4
作者:
T. Taxer;C. Schwarz;W. Smarsly;E. Werner
通讯作者:
E. Werner
DOI:
10.1115/1.2979872
发表时间:
2008-12
期刊:
Journal of biomechanical engineering
影响因子:
--
作者:
Sun W;Chaikof EL;Levenston ME
通讯作者:
Levenston ME