Linear statics and free vibration sensitivity analysis of the composite sandwich plates based on a layerwise/solid-element method
Linear statics and free vibration sensitivity analysis of the composite sandwich plates based on a layerwise/solid-element method
复制标题
基于分层/实体单元法的复合材料夹芯板线性静力学和自由振动敏感性分析
DOI：
10.1016/j.compstruct.2013.05.056
复制
发表时间：
2013-12
影响因子：
6.3
通讯作者：
X. Zhang
中科院分区：
文献类型：
--
作者：
D.H. Li;Y. Liu;X. Zhang
Although many researches have been attracted to optimization problems of composite sandwich structures, there are rarely special literatures for sensitivity analysis which provides essential gradient information for the optimization. In this paper the linear statics and free vibration sensitivity analysis problems of the composite sandwich plates are studied based on a layerwise/solid-element method (LW/SE) which was developed in our previous work to eliminate or decrease the error induced by the equivalent methods of the core. In the present sensitivity analysis schemes the cores of the sandwich plates are discretized by three models, namely, full model, local model and equivalent model.In the numerical examples, two kinds of sensitivity analysis schemes, the overall finite difference method (OFD) and the semi-analytical method (SAM), are employed to calculate the sensitivity coefficients of displacements, stresses and natural frequencies. The convergence is studied together with the effect of step size on the relative error. The performance of these three methods of modeling the honeycomb in computing displacements and natural frequencies sensitivity coefficients is investigated. At last, the influences of the parameters on the displacements, stresses and natural frequencies are investigated by using the sensitivity analysis scheme based on the local model and SAM.
登录
查看更多内容
影响因子：
9.1
作者：
U. Icardi;L. Ferrero
通讯作者：
U. Icardi;L. Ferrero
DOI：
10.2514/6.1988-2284
发表时间：
1988-04
期刊：
--
影响因子：
--
作者：
B. Barthelemy;R. Haftka
通讯作者：
B. Barthelemy;R. Haftka
DOI：
10.1080/08905459308905180
发表时间：
1993
期刊：
Mechanics of Structures and Machines
影响因子：
--
作者：
N. Olhoff;J. Rasmussen;E. Lund
通讯作者：
N. Olhoff;J. Rasmussen;E. Lund
DOI：
--
发表时间：
1996-11
期刊：
--
影响因子：
--
作者：
J. Reddy
通讯作者：
J. Reddy
影响因子：
4.7
作者：
P. Bakshi;P. Pandey
通讯作者：
P. Bakshi;P. Pandey