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- An engineering calculation method of spot weld fatigue life prediction is introduced. 摘要介绍一种焊点疲劳寿命预测的工程计算方法。
- Spot weld fatigue life 焊点疲劳寿命
- Fatigue Life Analysis of Car Body Structure and Spot Weld Based on FEM 基于有限元法的轿车车身结构及焊点疲劳寿命分析
- Results showed that high stress concentration around the spot weld edge may be the determinable factor for initializing and propagating of the high cycle fatigue crack. 分析结果表明：接头搭接区内表面上焊点边缘处的应力集中是接头高周疲劳裂纹起裂和扩展的决定因素。
- The analysis can simulate the fatigue test in braking condition and find the potential problem of the intension and durability of the whole crossmember and spot weld. 通过分析，可以预测模拟制动工况的疲劳台架试验中副车架本体及焊点可能出现的强度及疲劳问题。
- An Analytical Formula for Calculating Fatigue Life? 一个估算疲劳寿命的解析公式?
- The prediction model of coiled tubing fatigue life. 连续油管疲劳寿命预测模型的建立。
- And the draws of the stress, the whole life and the spot weld life of the crossmember are got after the analysis. 应用有限元分析法对副车架的疲劳台架试验进行强度和疲劳分析,得到副车架的应力分布图、副车架本体寿命云图和焊点寿命云图。
- Weldbonding experiments were performed and the results show that weldbonding technique can improve the strength and fatigue life of the weld joint. 同时参考分析结果进行粘接点焊的试验研究，表明粘接点焊可以显著提高结构的强度和疲劳寿命。
- The effects of direct-quenching heat-treatment through gas carburizing on the spot contact fatigue life of crosspiece and bowl was mainly studied. 采用气体渗碳直接淬火热处理工艺对力车轴档、轴碗进行接触疲劳寿命的影响试验。
- The fatigue life of 45 normalied steel would be decreased by prestretching. 微量的预应变会降低正火45钢的疲劳性能。
- In this estimator, the ANN is to realize the mapping characteristics from dynamic resistance to spot weld mecnanical proterty. 在此估测器中，经训练的神经元网络将用于描述动态电阻曲线与焊点力学性能的映射关系。
- Strength of resistance spot weld is determined by the physical attributes of weldment including material and geometric issues. 电阻点焊接头的焊接强度由母材和熔核的材料属性及几何特征决定。
- The element selection,gridding, the finite element model of spot weld, loading and resolution are also discussed andthe APDL program is wrote. 对单元选择，网格划分，焊接关系的模拟以及加载求解做了介绍，并使用ANSYS提供的参数化编程语言编制了程序。
- It shows that, the weldbonding structure is preferable to the actual using spot weld one, either in strength op in stress distributions. 结论是应用粘接点焊新技术的结构在结构强度特别是在应力分布上比点焊结构明显优越。
- The results indicate that EMR can improve the fatigue life of structure, and can drive interference-fit fastener with large interference. 研究结果表明，电磁铆接技术能够提高结构疲劳寿命，能够安装大干涉量干涉配合紧固件。
- The fusion course of different material (Fe and Ni)in spot weld with different process variable was researched.The weldableness and the selection of parameter were researched,too. 对异质材料铁-镍点焊在不同规范下熔合过程进行了试验研究,包括可焊性及规范参数的选择。
- A mean strain or prestrain, as in Fig. 83, can under certain conditions reduce the subsequent fatigue life. 一个如图83所示的平均应变或预应变，在某种情况下，能够缩短以后的疲劳寿命。
- Thermal fatigue life of solder joints is predicted using the Coffin-Manson's empirical modified formula. 在此基础上,利用Coffin-Manson经验修正公式预报了焊点的热疲劳寿命。
- And also the sensitivity analysis was done to the several key factors influencing the fatigue life of the vane. 并对影响其疲劳寿命的几种关键因素进行了敏度分析。
