The structural strength and flexural rigidity of the fuselage main frame are computed and verified by CAE system software and the results are analyzed.
应用CAE系统软件计算承力密封框的刚度和强度，并分析了计算结果。
The method of optimization theory based on dual method was transplanted to design fuselage main frame, and the optimizing model of fuselage main frame was established.
将基于二次规划的准解析法优化理论应用于机身主要承力框的设计中，建立了机身主要承力框的优化模型。
Simultaneously all the main parameters are determined according to the environment of fuselage airproof main frame and the design requirements in analyzing the rigidity and strength.
根据承力密封框的使用环境和设计要求，确定了对其进行刚度和强度分析时所需的各种主要参数；
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