基于ANSYS概率设计系统的电弧切割参数敏感性分析

发布时间：2018-02-26 17:09

本文关键词： 电弧切割应力场温度场有限元分析敏感性分析　出处：《焊接学报》2015年08期 　论文类型：期刊论文

【摘要】：为研究切割电流、切割速度、工件厚度和有效加热半径对低合金钢电弧切割质量的影响,建立了基于ANSYS概率设计系统的电弧切割参数敏感性分析模型.以低合金钢2Cr13为研究对象,通过施加移动高斯热源模拟电弧切割过程,研究了工件温度场和应力场随各参数的变化规律.采用响应面概率设计方法分析了温度场和应力场对各切割参数的敏感性,结果表明,切割电流和切割速度对电弧切割质量影响较大,有效加热半径和工件厚度影响较小;切割电流和工件厚度对温度场为正影响,切割速度和有效加热半径对温度场为负影响;切割电流、工件厚度和有效加热半径对应力场是正影响,切割速度对应力场是负影响.文中模型对低合金钢电弧切割工艺设计具有重要的借鉴和指导意义.
[Abstract]:In order to study the effect of cutting current, cutting speed, workpiece thickness and effective heating radius on the cutting quality of low alloy steel, The sensitivity analysis model of arc cutting parameters based on ANSYS probabilistic design system is established. The arc cutting process is simulated by applying moving Gao Si heat source to low alloy steel 2Cr13. The variation of temperature field and stress field of workpiece with each parameter is studied. The sensitivity of temperature field and stress field to each cutting parameter is analyzed by using the probability design method of response surface. The results show that, The cutting current and cutting speed have a great influence on the cutting quality, the effective heating radius and the thickness of the workpiece have little effect on the cutting quality, the cutting current and the thickness of the workpiece have a positive effect on the temperature field, and the cutting speed and the effective heating radius have a negative effect on the temperature field. The cutting current, the thickness of the workpiece and the effective heating radius have positive effects on the force field, and the cutting speed has a negative effect on the force field. The model in this paper has important reference and guidance significance for the arc cutting process design of low alloy steel.
【作者单位】：军械工程学院车辆与电气工程系;
【分类号】：TG484

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