锻压技术

某合金叶片冷辊轧有限元模拟分析

英文标题：Finite element simulation analysis of cold rolling for certain alloy blade

作者：陈晨刘劲松张士宏程明邰清安国振兴

单位：沈阳理工大学中国科学院金属研究所中航工业沈阳黎明航空发动机（集团）有限责任公司

关键词：叶片冷辊轧摩擦因子展宽有限元

分类号：TG335.1

出版年,卷(期):页码：2014,39(8):42-46

摘要：

利用有限元分析软件模拟某合金叶片的冷辊轧成形过程。系统研究了摩擦因子与轧辊转速对叶片等效应力与展宽的影响规律，分析了金属的流动情况。利用UGNX6.0软件对冷辊轧模具进行建模；将轧辊定义为刚体，叶片定义为弹塑性材料，利用有限元软件中的显式动力分析模块实现叶片的冷辊轧成形过程模拟。研究结果表明：叶片表面最大等效应力随摩擦因子和辊速的增加而增大，但增大幅度有限；从叶根到叶尖，叶片的展宽逐渐增大，最后达到稳定值；叶片的展宽随辊速的增加先增大后减小，摩擦因子对其展宽的影响很小；模拟结果与叶片叶身处实际展宽的变化规律相符。

Based on finite element analysis software,the cold rolling process of certain alloy blade was simulated.The influences of friction factor and rolling speed of rollers on the equivalent stress and spread of blade were systematically studied, and the condition of metal flow was analyzed.The model of cold rolling die was established by software of UG NX6.0, and the roller and blade were respectively treated as rigid body and elastic-plastic material. Based on the explicit dynamics module of finite element software, the forming process of cold rolling was accomplished. The simulation results show that the maximum equivalent stress value on the blade surface increases with the increment of friction factor and rolling speed, but the increasing amplitude is limited. From the root to top of blade, the spread value of blade increases gradually, and finally reaches a stable value. The spread of blade firstly increases and then decreases with the exaltation of rolling speed. There is little influence of friction factor on the spread of blade.The changing law of blade spread after simulation agrees well with the measurement one.

基金项目：

研究创新基金（2012061823102040041886）

陈晨（1989-），女，硕士研究生；刘劲松（1971-），男，博士，副教授

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