Adjoint Method for Topological Derivatives for Optimization Tasks with Material and Geometrical Nonlinearities
Adjoint Method for Topological Derivatives for Optimization Tasks with Material and Geometrical Nonlinearities
复制标题
具有材料和几何非线性的优化任务的拓扑导数的伴随方法
DOI:
10.1007/978-3-319-97773-7_75
复制
发表时间:
2019
期刊:
影响因子:
--
通讯作者:
A. Schumacher
中科院分区:
文献类型:
--
作者:
K. Weider;A. Schumacher
In this paper the Topological Derivative for crash loaded structures is derived with the adjoint sensitivity analysis. The main idea of the adjoint sensitivity analysis is to circumvent the direct calculation of the sensitivity of the displacement field. Instead, the adjoint equilibrium equation has to be solved. In this approach, material derivation and partial integration in the time domain are applied to the Topological Derivative. This ensures, that the inertial effects are kept, as they are important for a reliable crash simulation. The result is a backward integration scheme for the adjoint state.With implicit time integration, a numerical scheme to solve the primal and the adjoint problem is demonstrated. The specific adjoint equation as well as the Topological Derivative for a displacement functional and the internal energy are presented.
DOI:
10.1007/978-3-319-67988-4_120
发表时间:
2018
期刊:
影响因子:
--
作者:
K. Weider;A. Schumacher
通讯作者:
A. Schumacher
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
Katrin Weider;A. Schumacher
通讯作者:
A. Schumacher