基于AdvantEdge的高强高韧低密度钢钻削仿真与试验研究

Simulation and experimental study of high-strength, high-toughness, low-density steel machining based on AdvantEdge

  • 摘要: 针对高强高韧低密度钢在钻削过程中,因材料强度高、韧性大而引发的轴向力过大、切屑难以排出等难题,以及传统试验方法存在的成本高、周期长、难以捕捉内部动态物理场等局限,基于AdvantEdge软件构建了该材料的钻削仿真有限元模型。通过仿真分析了切削参数对轴向力、切屑的影响。通过切削试验,对比分析了轴向力、切屑压缩率与卷曲系数的仿真与试验值。在此基础上,依据仿真数据进一步建立了轴向力预测模型。结果表明,切削速度与轴向力呈负相关;进给量与轴向力呈正相关;进给量与切屑压缩率呈正相关,与切屑卷曲系数呈负相关。轴向力平均误差为10.12%,切屑压缩率与卷曲系数平均误差分别为2.46%和4.11%,验证了有限元模型的准确性;所建立的轴向力预测模型具有良好的精度,能够为实际加工中轴向力控制提供有效指导。

     

    Abstract: Aiming at the problems such as excessive axial force and difficulty in chip removal caused by high material strength and great toughness during the drilling process of high-strength, high-toughness and low-density steel, as well as the limitations of traditional test methods such as high cost, long cycle and difficulty in capturing the internal dynamic physical field, a drilling simulation finite element model of this material based on AdvantEdge software is constructed. The influence of cutting parameters on axial force and chips was analyzed through simulation. Through cutting tests, the simulation and test values of axial force, chip compression ratio and curling coefficient were compared and analyzed. On this basis, an axial force prediction model was further established based on the simulation data. The results show that the cutting speed is negatively correlated with the axial force. Feed rate is positively correlated with axial force. The feed rate is positively correlated with the chip compression rate and negatively correlated with the chip curling coefficient. The average error of the axial force was 10.12%, and the average errors of the chip compression rate and the curling coefficient were 2.46% and 4.11% respectively, verifying the accuracy of the finite element model. The established axial force prediction model has good accuracy and can provide effective guidance for axial force control in actual processing.

     

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