探讨了以预张力和截面尺寸为设计变量的预张力结构优化设计问题。
The optimum design for pretensioned structures considering both the pretension force variables and the size variables was discussed.
初始缺陷和强度参数为设计变量，采用一阶矩法计算单元层的失效概率。
The initial imperfection and the strength parameters are considered as random variables. Ply-level failure probability is evaluated by the first order reliability method.
以膜单元的设计厚度与初始厚度的比值为设计变量，通过设计变量的量纲一化实现了设计变量的连接。
With the ratios of design thickness to initial thickness of membrane elements as design variables, design variables linking is implemented by dimensionless design variables.
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