This phenomenon is all existed under various kinds of optimization criterion of the progressive structural optimization design.
在渐进结构优化设计的各种优化判据下都存在这一现象。
Therefore, the space fluctuation parameters proposed in present paper provides a quantitive criterion for configuration optimization design for slotted fin surfaces.
因此，本文提出的无量纲空间波动参数为开缝翅片结构优化设计提供了一个定量的标准。
Based on fully stressed criterion, a mathematical model for spring optimization design has been built. The model is a constrained nonlinear programming problem.
按满应力准则建立了弹簧优化设计的数学模型，它是一个有约束的非线性规划问题。
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