基于遗传优化算法的结构模型刚度修正技术

Structural Stiffness Correction Based on Genetic Algorithm Optimization

针对复合材料真实结构与有限元理论模型刚度偏差较大的问题,提出了基于遗传优化算法进行模型刚度修正的方法。以某复合材料弹翼为例,采用遗传算法对模型铺层角度和铺层厚度进行优化,使模型弯曲刚度和扭转刚度精度分别提升9.5%和8.4%,模型精度达到工程分析要求,验证了该方法的有效性和实用性。

In order to solve the stiffness deviation between composite real structure and theory model,a stiffness optimization method based on genetic algorithm is proposed. Taking a composite wing model for example,the orientations and layer thickness of the wing is optimized by using the genetic algorithm method. The results show that the accuracy of bending stiffness and torsional stiffness of the model increases 9. 5% and 8. 4% respectively. The accuracy of the model achieves the requirements of engineering analysis,which verifies the effectiveness and practicability of the optimization method.