结构的边界表示为若干设计变量的函数，结构形状优化问题表示为数学规划问题。
The structural boundary is represented by a function cf a series of design variables. Then the structural shape optimal design can be represented as a problem of mathematical programming.
研究表明，现有轴流泵的叶片设计理论单一，缺少更多有效控制叶片形状的变量和手段。
The investigation results show that the existing vane design theory is rather too simple and there are less variables and methods for effectively controlling the vane configuration and geometry.
基于统一设计变量方法，实现了导管架海洋平台在动冰载荷作用下的截面和形状动力优化设计。
Based on the unified design variable method, the shape and sizing optimization design of jacket platform with dynamic ice-load is investigated.
以形状记忆合金体积含量为主要设计变量，分析了丝状、带状及板状形状记忆合金埋入复合材料层合板后，这种混杂复合材料力学性能的变化。
When the main design parameter has been choused the SMA volume fraction and the SMA wire, ribbon, and plate has been embedded, the performance of SMAHC changes.
提出了一种渐进优化方法，通过分离设计变量，分别采用渐进节点移动法和满应力法优化桁架结构的形状和尺寸。
In this paper, an evolutionary optimization method is proposed to minimaze the weight of truss structure in terms of nodal coordinates and element cross sectional areas.
第二步是以车轮的质量为目标函数，以车轮的应力、径向及横向位移为约束函数，以车轮辐板形状为设计变量进行设计。
The second step is taking the mass of wheel as target function. The stress, radial and cross displacement of wheel as restrain function, the spoke profile of wheel as design variable.
第二步是以车轮的质量为目标函数，以车轮的应力、径向及横向位移为约束函数，以车轮辐板形状为设计变量进行设计。
The second step is taking the mass of wheel as target function. The stress, radial and cross displacement of wheel as restrain function, the spoke profile of wheel as design variable.
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