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首页> 外文期刊>Journal of Manufacturing Processes >Experimental investigation and numerical simulation of the orthogonal cutting based on the smoothed particle hydrodynamics method
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Experimental investigation and numerical simulation of the orthogonal cutting based on the smoothed particle hydrodynamics method

机译：基于光滑粒子流体动力学方法的正交切削试验研究与数值模拟

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摘要

In the last decades, mesh-free methods for simulating various cutting processes have been used very widely as they can effectively avoid mesh distortion when dealing with large deformation problems. The current work aims to systematically study conventional and surface defect machining (SDM) using state-of-the-art smoothed particle hydrodynamics (SPH) method. The orthogonal cutting experiments were performed to evaluate the validity of the SPH simulation model. A good agreement between experimental and numerical results was achieved, which indicates that SPH method is capable of predicting the cutting forces and chip morphology correctly. The mechanisms of chip formation were investigated. Significant changes were observed in chip morphology with the variations in the cutting depths. Based on the validated numerical models, an assessment of the SDM technique was carried out using SPH method. Compared with conventional machining, SDM technique provided favourable machining results including reduced cutting forces and reductions in overall temperature in the cutting zone.
机译：在过去的几十年中，用于模拟各种切割过程的无网格方法已经得到了广泛的应用，因为它们在处理较大的变形问题时可以有效避免网格变形。当前的工作旨在使用最先进的平滑粒子流体动力学（SPH）方法系统地研究常规和表面缺陷加工（SDM）。进行正交切割实验以评估SPH仿真模型的有效性。实验结果与数值结果吻合良好，表明SPH方法能够正确预测切削力和切屑形态。研究了切屑形成的机理。随着切削深度的变化，观察到切屑形态的显着变化。在验证的数值模型的基础上，使用SPH方法对SDM技术进行了评估。与传统加工相比，SDM技术可提供良好的加工效果，包括降低切削力和降低切削区域的整体温度。

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