一、前言众所周知,比例满应力法是结构优化设计中的一大重要方法,它是从结构力学的原理出发,根据满应力准则,采用“应力比”逐次逼近的过程寻求结构最优解的方法。此法在六十年代发展很快,特别在航空结构优化设计中已广泛应用,其优点是方法简便(一般以直观的迭代过程进行),能适用于设计变量比较多的规模大的结构,一般要求结构分析的次数约十次左右,缺点是用此法所得的结果只能是某种程度的近似解,而且有时甚至会出现不收敛的 I. INTRODUCTION As we all know, the proportional full stress method is an important method in the structural optimization design. It is a method starting from the principle of structural mechanics and using the “stress ratio” successive approximation process to find the optimal solution of the structure according to the full stress criterion. . This method has developed rapidly in the 1960s, and has been widely used in the optimization design of aeronautical structures. The advantages of this method are that it is simple and convenient (usually iteratively, intuitively), and it can be applied to large-scale structures with many design variables. The number of structural analyses required is about ten times. The disadvantage is that the results obtained with this method can only be a certain degree of approximate solutions, and sometimes even non-convergence occurs.