In the numerical simulation of relieving residual stress by hammerpeening, contact element technique was firstly adopted for establishing the finite model and calculating the hammerpeening.
首次在锤击消除焊接应力的数值模拟研究中，采用接触单元技术建立有限元模型模拟计算锤击作用。
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Finally, the parametric simulation program was designed with ANSYS APDL language, various simulation of welding and hammerpeening can be analysed through defining different parameters.