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.
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