Milling is one of the main methods for processing titanium alloy. At present, the complex process of milling is usually simulated by finite element method, which often has problems in mesh distortion and mesh reconstruction. Therefore, a meshless three-dimensional milling simulation model was established for TC4 titanium alloy using the smooth particle hydrodynamics (SPH) method. Firstly, the established SPH model was analyzed by the LS-DYNA software, and the stress distribution, temperature field, and cutting force during milling were studied under specific conditions. Subsequently, the cutting force was simulated under different cutting parameters and the effects of these parameters on the cutting force were determined. Finally, based on a series of cutting force experiments, the accuracy of the simulation model was verified. This study proves the feasibility of SPH method in the simulation of titanium alloy milling process and provides novel methods for investigating the processing mechanism and optimizing the processing technology of titanium alloys.

中文翻译：

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TC4铣削过程中切削力的光滑颗粒流体动力学建模

铣削是加工钛合金的主要方法之一。目前，铣削的复杂过程通常是通过有限元方法来模拟的，它经常在网格变形和网格重构方面存在问题。因此，使用光滑粒子流体动力学（SPH）方法建立了TC4钛合金的无网格三维铣削仿真模型。首先，通过LS-DYNA软件对建立的SPH模型进行了分析，并研究了特定条件下铣削过程中的应力分布，温度场和切削力。随后，在不同的切削参数下模拟切削力，并确定这些参数对切削力的影响。最后，通过一系列切削力实验，验证了仿真模型的准确性。