某型冰箱冷凝器的振动断裂分析
2021-02-18占双剑王松青陈滢陈新涛黄晓明
占双剑 王松青 陈滢 陈新涛 黄晓明











摘要: 针对某型冰箱冷凝器振动测试后冷凝管出现多处断裂破坏的问题,根据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;利用有限元计算分析软件对部件进行结构模态分析,模拟扫频振动试验过程;根据有限元分析验证结构振动断裂结果,结合实际断裂部位特征与相连接冷却杆的结构变形,分析断裂发生的可能性;最后给出有效避免断裂的方法,用于优化振动测试方案。
关键词: 断裂; 扫频振动; 冷凝器; 模态分析; 有限元
中图分类号: TB24;TB651文献标志码: B
Analysis of vibration fracture on condenser of refrigerator
ZHAN Shuangjian1, WANG Songqing1, CHEN Ying1,
CHEN Xintao2, HUANG Xiaoming3
(1. Suzhou Advanced Integrated Mechanical Solutions Co., Ltd., Suzhou 215123, Jiangsu, China;
2. Zhangjiagang Core Electric Co., Ltd., Suzhou 215123, Jiangsu, China;
3. School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China)
Abstract: Aiming at the problems of multiple fracture of condenser tube of a refrigerator after vibration test, a reliable and effective finite element analysis model is established according to the characteristics of the combined structure of equipment and matching connectors of the condenser the type of heat exchanger extraction. Finite element analysis software is used to analyze the structural modal of the components and simulate the sweep vibration test process. The results of structural vibration fracture are verified by finite element analysis, and the possibility of fracture is analyzed based on the characteristics of the actual fracture position and the structural deformation of the connected cooling rod. Finally, an effective method to avoid fracture is given to optimize the vibration testing scheme.
Key words: fracture; sweep vibration; condenser; modal analysis; finite element
收稿日期: 2021-06-17修回日期: 2021-11-11
基金項目: 国家自然科学基金(51576077)
作者简介: 占双剑(1995—),男,江西上饶人,硕士,研究方向为力学,(E-mail)shuangjian_zhan1@163.com0引言随着人们生活水平的迅速提高,各种制冷设备在移动平台上得到越来越广泛的应用,如小型冰箱和车载空调。汽车在行驶过程中受到路面的激励作用,会发生持续不断的振动,这种振动会显著降低设备的使用寿命,故需要具有更好的抗振防抖性能以保证结构强度。在实际的工程生产中,一般常用试验测试校验产品的结构强度,但单次的试验测试无法准确判断试验过程中的结构损伤或破坏成因,需要重复多次试验。针对此类情形,利用有限元分析(finite element analysis,FEA)复现和验证样机试验特性,协助确定损伤或破坏成因,具备可行性与工程价值。近年来,振动领域内的科研和工程人员广泛……
