Review on The Prediction of Residual Stress in Welded Steel Components
Review on The Prediction of Residual Stress in Welded Steel Components
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DOI：
10.32604/cmc.2020.08448
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发表时间：
2020
影响因子：
3.1
通讯作者：
J. Ni;X. Zhuang;M. Wahab
中科院分区：
文献类型：
--
作者：
J. Ni;X. Zhuang;M. Wahab
焊后残余应力对焊接钢构件或结构的使用寿命有不利影响。本文综述了三种最常用的残余应力预测方法，即经验法、半经验法和工艺模拟法。介绍了这些方法所采用的基本原理。还讨论了每种方法的特点和局限性。经验方法是最实用的，但其准确性在很大程度上依赖于实验。在半经验方法中采用力学理论，而其他方面，如温度变化和相变，被简单地忽略。过程模拟方法因其处理大型复杂零件的能力而得到广泛应用。为了提高其精度和效率，需要对该方法的各个仿真方面进行改进。
Residual stress after welding has negative effects on the service life of welded steel components or structures. This work reviews three most commonly used methods for predicting residual stress, namely, empirical, semi-empirical and process simulation methods. Basic principles adopted by these methods are introduced. The features and limitations of each method are discussed as well. The empirical method is the most practical but its accuracy relies heavily on experiments. Mechanical theories are employed in the semi-empirical method, while other aspects, such as temperature variation and phase transformation, are simply ignored. The process simulation method has been widely used due to its capability of handling with large and complex components. To improve its accuracy and efficiency, several improvements need to be done for each simulation aspect of this method.