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随着焊接理论研究以及计算机有限元模拟分析的快速发展,运用数值模拟计算和预测焊接残余应力的形成和分布已经可以获得比较理想的结果,但是由于焊接过程本身的复杂性和数值模拟的局限性,有限元模拟计算和实际测量的结果有时总是出入很大,因此焊接残余应力的实测仍然是有必要的.通过焊接过程的实时监测,对比焊接过程的有限元模拟结果,总结两者数值差异的原因,说明焊接过程的实际监测相较于有限元模拟的优越性,该实时监测技术可应用于结构健康监测系统.
With the development of welding theory and the rapid development of computer simulation, it is possible to obtain satisfactory results by using numerical simulation to calculate and predict the formation and distribution of welding residual stress. However, due to the complexity of the welding process and the limitation of numerical simulation , The finite element simulation calculation and the actual measurement results always have a great deal of discrepancies, so the measurement of welding residual stress is still necessary.Through the real-time monitoring of the welding process, comparing the finite element simulation results of the welding process, summarizing the difference between the two The reasons for the actual monitoring of welding process compared to the advantages of finite element simulation, the real-time monitoring technology can be applied to structural health monitoring system.