结构设计分析功能块AASA—OPT的研究

AASA-OPT Program Block for Fast Repetitive Analysis of Rigidity of Aircraft Structure in China

本文根据结构非线性分析的不变总则虚拟载荷迭代原理研究和编写了适于在结构设计过程中进行多次再分析的功能块ＡＡＳＡ—ＯＰＴ．在某型机翼设计中，应用该功能块进行了多次大范围的刚度修改．结果表明它对大型复杂结构设计具有较高的使用价值．

The authors in this paper present a method and its corresponding program blockt bcllcvcd to be done forthc first time In China to meet China’s nced for fast repetitive analysis of rigidity of aircraft structure The well known nonlinear-structural-stiffness-matrix principie is applied to repetitive analysis of rigidity of aircraft structure. in which the fcaturc is thatchangcs in rigiditics of members in original structure are extensive but very small.An Aeronautical and Astronautical Structural Analysis (AASA)-Optimum(OPT) program block is developedand its flow-chart is given in Fig.1.The computation results for the repetitive rigidity analysis of an aircraft wing are given in Table 2.The computation results indicate that the authors' method and AASA-OPT program block are promising for meeting China's need. The time required for each repctition is reduced by about 90% as compared with carlier method of analysis in China.