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基于ANSYS/LS-DYNA的金屬切削過程有限元模擬
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    摘要:

    利用ANSYS/LS-DYNA進行了金屬切削過程的模擬研究，模擬了切屑的形成過程，得到了變形區(qū)應(yīng)力和應(yīng)變分布，并研究了殘余應(yīng)力和切削力的變化。模擬結(jié)果表明，在第1變形區(qū)和第2變形區(qū)，應(yīng)力、應(yīng)變較大，且較集中，前刀面的最大應(yīng)變出現(xiàn)在距刀尖一定距離的地方；在切削過程中，切削力逐漸增大，最后保持在某一個值附近波動，達到穩(wěn)定狀態(tài)；在加工表面上存在著殘余應(yīng)力和殘余應(yīng)變，且殘余應(yīng)力和殘余應(yīng)變隨著與刀尖和已加工表面之間距離的增大而減小。

    Abstract:

    The finite element simulation study of metal cutting process has been carried out with the finite element software ANSYS/LS-DYNA. The forming process of chip was simulated and the distribution of strain and stress was acquired. In addition, the change of remnants stress, strain and cutting force has been studied. The results of simulation showed that the strain and stress is larger and more intense in the first and second deformation zone and the largest stress of rake face appeared in position that had a displacement to the tool tip. In the process of metal cutting, the cutting force has been increased gradually and then held wave nearby a constant value. There were remnants strain and stress in the finished surface and the remnants strain and stress decreased with the distance of tool tip and the finished surface increased. 

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李國和,王敏杰,段春爭.基于ANSYS/LS-DYNA的金屬切削過程有限元模擬[J].農(nóng)業(yè)機械學(xué)報,2007,38(12):173-176.[J]. Transactions of the Chinese Society for Agricultural Machinery,2007,38(12):173-176.

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