【摘要】 利用遗传算法(GA)对桁架结构分别进行杆件截面和节点坐标的优化设计,利用BP网络的高度非线性映射能力来得到遗传算法的适应度函数值,替代优化中重复采用有限元分析的方法,降低计算花费时间,提高了算法收敛速度.通过25杆输电塔架算例的优化设计,验证了此方法的实际应用是可行的.更多还原

【Abstract】 The truss bar sectional size and nodal position are adjusted by genetic algorithms.The high non-linear mapping ability of BP network is used to calculate the genetic algorithms fitness.The analysis time is decreased and the convergence speed of optimization algorithms is improved.Case study shows the feasibility of BP genetic algorithms in practical application.更多还原