热环境中加筋壁板数值仿真  

Numerical Simulation of Stiffened Panel in Thermal Environment

作　　者：刘志民[1] Liu Zhim in(Aircraft Strength Research Institute, Xiran 710065, Shaanxi, China)

机构地区：[1]中国飞机强度研究所,陕西西安710065

出　　处：《工程与试验》2017年第3期22-26,88,共6页Engineering and Test

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.

关 键 词：热环境 壁板结构 热屈曲 临界温度 

分 类 号：V214.35[航空宇航科学与技术—航空宇航推进理论与工程]