某大型真空容器结构稳定性分析与试验评价  

Structural Stability Analysis and Test Evaluation for Large Vacuum Vessels

作　　者：何绍栋 王华新[1] 刘宝瑞[1] 李云恒 施建昆 钱都 杨健 HE Shaodong;WANG Huaxin;LIU Baorui;LI Yunheng;SHI Jiankun;QIAN Du;YANG Jian(Beijing Institute of Space Mechanics&Electricity,Beijing 100094,China)

机构地区：[1]北京空间机电研究所,北京100094

出　　处：《真空科学与技术学报》2023年第5期410-417,共8页Chinese Journal of Vacuum Science and Technology

摘　　要：真空容器广泛应用于航空航天领域,其结构稳定性是考核设计的重要指标。针对复杂异形真空容器规则设计的不确定性及仿真评估的准确性缺陷,本文构建了某大型真空容器模型,在工艺设备质量、0.1 MPa外压力和重力条件下分析了容器应力、位移和屈曲指标。组建了一套由应变、位移、压力测试组成的真空容器结构稳定性测试系统,采用分段、连续两种抽真空模式,获取了经典测点的应力、位移试验数据,提出了针对大型真空容器结构稳定性试验评价方法。结果发现:能够有效的验证真空容器前期的设计计算和有限元仿真的准确性。该方法为提高仿真准确性提供了优化方向,有助于真空容器研制及验收工作。Vacuum vessels are widely used in the aerospace field,and their structural stability is an important indicator for assessing the design.To address the uncertainty of the rule design of complex shaped vacuum vessels and the accuracy deficiencies of simulation assessment,this paper constructs a large vacuum vessel model and analyses the vessel stress,displacement and buckling indicators under the conditions of process equipment mass,0.1 MPa external pressure and gravity.A vacuum vessel structural stability test system consisting of strain,displacement and pressure tests was set up,and two evacuation modes,sectional and continuous,were used to obtain the stress and displacement test data of the classical measurement points,and a test evaluation method for the structural stability of large vacuum vessels was proposed.The results show that the method can effectively verify the accuracy of the design calculation and finite element simulation of the vacuum vessel.The method provides an optimization direction to improve the accuracy of the simulation,which is helpful for the development and acceptance of the vacuum vessel.

关 键 词：真空容器 稳定性分析 有限元分析 试验评价 

分 类 号：V416.8[航空宇航科学与技术—航空宇航推进理论与工程]