机械结构分层优化技术研究进展

复杂机械结构优化设计一般表现为多目标、多约束、多参数的优化问题,所以复杂结构优化设计过程通常存在计算复杂、不易收敛等困难。分层优化技术是复杂结构优化设计的一种有效途径,通过将优化问题中复杂的约束、设计变量以及功能目标合理分解为若干子层问题进行求解,然后通过协调得到复杂机械结构整体优化问题的结果。文章对机械结构分层优化技术的理论、应用研究现状进行了总结并探讨了其关键技术环节及发展趋势。

Research Progress on Hierarchical Optimization Technology of Mechanical Structure

The optimization design of complex mechanical structures generally presents multi-objective,multiconstrained,multi-parameter optimization problems.Therefore,complex structural optimization design processes often have difficulties in computational complexity and difficulty in convergence.Hierarchical optimization technology is an effective way of optimization design of complex mechanical structures.It solves the complex constraints,design variables and functional objectives of the optimization problem into several sub-layer problems,and then obtains the result of overall optimization problem through coordination.Thispaper summarizes the theoretical and applied research status of hierarchical optimization technology of mechanical structure and discusses its key technology links and development trends.