基于ANSYS软件的不锈钢薄板光纤激光切割工艺参数研究

Study on Fiber Laser Cutting Parameters of Stainless Steel Sheet Based on ANSYS Software

为了研究工艺参数对激光切割过程的影响,利用ANSYS有限元分析软件建立304不锈钢三维有限元仿真模型,采用APDL编程语言,实现激光高斯热源沿切割轨迹移动过程仿真;分析在其他参数不变的情况下,切割速度、切割功率以及板材厚度变化情况下的温度分布;通过对不同参数下温度分布云图的对比,利用节点温度分布及温度变化情况,分析切割时参数变化对切割指标的影响。结果表明:温度分布主要表现为呈拖尾彗星状态的温度扩散,最大温度梯度集中在切割源附近;当切割速度过大,功率过小,板材过厚时,最高温度达不到材料熔点;如果切割速度过大,则温度梯度变大;如果切割功率过大,则融化半径变大;实验与仿真对照进一步验证了仿真的可靠性。

To study the influence of process parameters on laser cutting process,ANSYS finite element analysis software was used to construct the304stainless steel three-dimensional finite element simulation model.The simulation of laser Gauss heat source moving along the cutting trajectory was accomplished by using APDL programming language.The temperature distributions of cutting speed,cutting power,and cutting plate thickness were analyzed with the same other parameters.Through the comparison of temperature distribution cloud diagram with different parameters,the influence of changed parameters on cutting indexes was analyzed by using the temperature distribution and change of temperature.The results show that the temperature distribution is mainly expressed as the temperature diffusion of the comet state.The maximum temperature gradient is concentrated near the cutting source.When the cutting speed is too large,the power is too sm all,and the plate is too thick,the maximum temperature cannot reach the melting point of the material.If the cuttingspeed is too large,the temperature gradient becomes larger.If the cutting power is too large,the melting radius becomes larger.The reliability of the simulation is verified by the comparison between experiment and simulation.