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本文研究了组合结构屈曲稳定性优化设计及灵敏度分析数值方法 ,讨论了屈曲临界荷载灵敏度对应力场和载荷的依赖关系、及其在尺寸和形状变量中的不同计算方法 ,将屈曲优化与静力和动力优化联合执行 ,在JIFEX软件中实现以解决复杂的结构优化问题。算例表明了优化方法在结构稳定性设计中的应用 ,验证了算法和程序的有效性
In this paper, the optimal design of buckling stability of composite structures and the numerical method of sensitivity analysis are studied. The dependence of buckling critical load sensitivity on stress field and load and the different calculation methods in the dimension and shape variables are discussed. Combined with Power Optimization, it is implemented in JIFEX software to solve complex structural optimization problems. The examples show the application of the optimization method in structural stability design and verify the effectiveness of the algorithm and procedure