| 某型冰箱冷凝器的振动断裂分析 |
| 投稿时间：2021-06-17 修订日期：2021-11-11 点此下载全文 |
| 引用本文：占双剑,陈滢,王松青,陈新涛,黄晓明.某型冰箱冷凝器的振动断裂分析[J].计算机辅助工程,2021,30(4):. |
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| 基金项目:国家自然科学基金 |
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| 中文摘要:某型冰箱冷凝器在振动测试台上经过24小时的试验之后，发现冷凝管上出现了多处断裂破坏。针对该冷凝器的振动断裂破坏问题，首先根据该冷凝器所属的换热器类型提取设备及配套连接件的组合结构特征，建立可靠有效的有限元分析模型；然后利用有限元计算分析软件进行部件的结构模态分析，模拟扫频振动试验过程；最后根据有限元分析的结果，验证了结构振动断裂的结果，结合实际断裂部位特征与相连接冷却杆的结构变形，分析了断裂发生的可能性，结论给出有效避免断裂出现的方法，可用于优化振动测试方案。 |
| 中文关键词:断裂破坏 有限元计算 扫频振动 冷凝器 模态分析 |
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| Damage Analysis of Vibration Fracture on a Prototype Refrigerator Condenser |
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| Abstract:After a 24-hour vibration test, many fractures were found on a prototype condenser. In order to investigate the fracture failure of the condenser, structural features of the condenser and its supporting connectors were extracted to establish a reliable and effective finite element analysis model. After that, the dynamic characteristics of the components was simulated, and the sweeping vibration test was reproduced. Finally, according to the results of finite element analysis (FEA), the results of structural vibration fracture were verified. Based on the study of the actual fracture locations and the structural deformation of the attached cooling wires, the conclusion gives an effective method to avoid potential reoccurrence of similar failures. Several possibilities of the fracture were provided to help optimize the vibration test scheme. |
| keywords:fracture failure finite element analysis frequency sweep vibration condenser modal analysis |
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