摘要
热环境下的动特性是进行结构动态响应分析和优化设计的基础。本文对四周简支的飞行器热防护系统钛合金加筋壁板热动特性进行了分析,采用工程计算方法,计算了壁板在500℃下的临界应力,在PATRAN平台建立分析模型,并采用NASTRAN商业软件获得壁板结构热屈曲临界温度。
The dynamic characteristics of structure in thermal environment are the basis of the optimization design o f structural dynamic response.The thermal dynamic characteristics of stiffened panel o f thermal protection system for aircraft with a ll edges simply supported are analyzed in the paper,and the critical stress o f stiffened panel at500〇C is calculated by using the engineering calculation method.The analysis model is established on PATRAN platform and the critical temperature o f thermal buckling is obtained by using NASTRAN commercial software.
作者
刘志民
Liu Zhim in(Aircraft Strength Research Institute, Xiran 710065, Shaanxi, China)
出处
《工程与试验》
2017年第3期22-26,88,共6页
Engineering and Test
关键词
热环境
壁板结构
热屈曲
临界温度
thermal environment
panel structure
thermal buckling
critical temperature
