散热器管板钎焊焊趾振动应力的数值分析-覃峰.pdf

散热器管板钎焊焊趾振动应力的数值分析 1 2 2 覃峰 ，郭丽华 ，夏立峰 [1. 上海加冷松芝汽车空调股份有限公司制冷空调研究院 上海 201108 ； 2. 浙江银轮机械股份有限公司热管理技术研究院 浙江 317200] [ 摘摘 要要 ] 基于子模型法，借助 ANSYS Mechanical 模块，对某散热器钎焊焊趾的振动应力进行分析。 摘摘 要要 2 计算结果表明，在 20 Hz、5 m /s 的竖直振动载荷下，钎焊焊趾主要承受Z 向应力作用；最大 应力出现在散热器出风侧第 37 列散热管下方的焊趾部位，幅值为 2.2 Mpa 。焊趾应力计算值 与实测值在分布趋势上基本一致；但受限于测试方法、产品结构尺寸与数模偏差等诸多因素， 最大偏差达 48% 。 [ 关键词关键词 ] 散热器，子模型，ANSYS Mechanical 关键词关键词 Vibration Stress Analysis for the Tube-manifold Brazing Joints of a Radiator 1 2 2 Qin Feng , Guo Lihua , Xia Lifeng [1. Refrigeration Air Conditioning Research Institute, SongZ Automobile Air Conditioning Co., Ltd., Shanghai 201108 2. Research Institute of Thermal Management Technology, Zhejiang Yinlun Machinery Co. Ltd., Zhejiang 317200] [ Abstract ] Basing on submodeling method, ANSYS Mechanical is used for the vibration stress analysis 2 at the tube-manifold brazing joints of a radiator, excited by 20 Hz, 5 m /s vertical vibration. The analysis results show that the toe stresses of the brazing joints are mainly in z direction. The maximum stress amplitude of 2.2 Mpa exists at the lower brazing toe of 37th tube at the back side of the radiator. The calculated distributions of the toe stresses agree well with those by the test; however, the maximum difference reaches 48%, which is attributed to the reasons including the test method and the detailed shape deviatio