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扩压器是高温燃气流速超声速热结构风洞试验装备的重要组成部件,本文根据航空风洞试验结构件强度标准要求的有关规定,基于ANSYS参数化设计语言,模拟仿真了扩压器三大组成部件收缩段、等直段、扩张段同时在真空、大气压和内腔水压三种载荷环境下的承载情况,按工作状态和试验状态两种工况进行了力学分析,获得了扩压器三大组成部件的变形、应力等性能参数,计算结果表明扩压器的结构满足强度、刚度要求,安全使用系数ns>3,整体性能较好,为后续的结构优化提供了依据。
The diffuser is an important part of the wind tunnel test equipment of supersonic thermal structure with high temperature gas flow rate. According to the relevant requirements of the strength standard of aviation wind tunnel test structure, based on ANSYS parametric design language, three components of diffuser Component contraction section, equal section, expansion section at the same time under vacuum, atmospheric pressure and cavity water pressure under three kinds of loading conditions, according to the working condition and the test state two conditions for mechanical analysis obtained diffuser three The results show that the structure of the diffuser meets the requirements of strength and stiffness, the safe use factor of ns> 3, the overall performance is good, which provides the basis for the subsequent structural optimization.