广义多级结构优化设计

提出了一种广义的多级结构优化设计方法，该方法的核心是将原结构优化问题按等级分解成若干个子结构优化问题，各子结构通过行为灵敏度、优化灵敏度导数加以耦合，由于每级中各子结构相对独立，故每一级各子结构可进行并行计算，这一特点可望在大型结构优化是提高总的计算效率，缩短计算时间。最后给出了一铡架优化设计的算例，结果表明该方法具有良好的收敛性。

GENERALIZED MULTILEVEL STRUCTURE OPTIMIZATION DESIGN

A generalized multilevel structure optimization design method is presented in this paper. The coreof this method lies in decomposing a structure optimization problem into a set of substructure optimization prob-lems and coupling between the substructures by behavior sensitivity derivatives and optimum sensitivity deriva-tives. The substructures in a given level are isolated from each other,So all the substructures in a given level canbe analyzed and optimized simultaneously. It's possible that this feature will increase the total computational effi-ciency and shorten the design cycle in a large structure optimization design. An example about a framework opti-mization is presented.The results showed that this method has the good property of convergence.