桁架拓扑和尺寸优化的协同演化算法

A Co-evolution Algorithm for the Topology and Size Optimization of Trusses

针对桁架拓扑优化问题提出桁架拓扑和尺寸优化的协同演化算法。先给出桁架拓扑和尺寸优化的数学模型 ,再对协同演化的机理进行说明 ,给出算法在桁架问题上实现的编码策略、适应值函数构造等方法。最后 ,对一个十杆桁架进行拓扑和尺寸协同演化计算 ,给出计算结果。

A co evolution algorithm used to solve topology and size optimization of trusses is proposed. The mathematical models of topology and size optimization of trusses are given firstly, and then a co evolution mechanism for optimization of both models, including coding strategies and the construction of fitness functions, is described. To demonstrate the performance of the algorithm, an example of ten bar truss optimization with discrete cross section areas is presented.