In this paper, aimed at minimizing the whole strain energy of thin shell structure, the model of shape optimization and the topology optimization were built up.
以薄壳结构整体应变能最小为目标，建立了薄壳屋盖的形状优化与拓扑优化模型，并提出了薄壳屋盖形状优化与拓扑优化的的求解方法。
In order to reflect the characteristics of geotechnical material more exactly, the strain-softening model was built based on the engineering background of one deep foundation reinforced by soil nail.
为了更加真实地反映岩土体材料的特性，以某深基坑土钉加固工程为背景，建立相应的应变软化模型。
So the traditional criteria built in the stress space cannot determine whether the material is destroyed. On the contrary, the criteria built in the strain space can properly deal with the problem.
所以传统的基于应力空间的各种准则无法判断材料破坏与否，而基于应变空间进行表述则能克服这一局限。
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