热轧法制造齿轮计算机仿真(本科高分毕业论文)(有限元)教案分析.docVIP

热轧法制造齿轮计算机仿真分析 完成日期： 指导教师签字： 评阅教师签字： 答辩小组组长签字： 答辩小组成员签字： 摘 要 本文以热轧45钢齿轮为研究对象，借助有限元分析软件MSC.Marc对齿轮轧制过程进行仿真，对轧制过程中齿轮内部应力、应变分布情况，轧制力的大小，轧制力矩及内部金属的流动规律等进行分析讨论。 通过分析可以看出，齿轮在轧制的过程中，坯料表面的应变分布是不均匀的，主要集中在轧成的齿廓的周围且应变较大，而齿廓内部的应变较小，心部几乎没有应变；由于应变较大，在高温轧制下齿廓区域可以很容易发生再结晶，细化晶粒，提高齿轮的强度和表面的耐磨性等。所以通过有限元的仿真可以极大地提高热轧齿轮工艺开发与优化效率，并且节约成产成本，对生产工艺的改良也有很积极地意义。 关键词：齿轮；轧制；有限元；应变 Abstract In this paper, hot-rolled steel gear 45 as the research object, with the aid of finite element analysis software MSC.Marc gear rolling process simulation, the internal stress during rolling gear, strain distribution, the size of the rolling force, rolling moment and flow pattern inside the metal were analyzed for discussion. By analysis that, in the course of the rolling gear, the strain mainly concentrated around the surface of the tooth profile, and a strain is large, and the tooth profile of the internal strain is small, the center almost no strain; since the strain is large, tooth profile at high temperatures can be easily rolled recrystallization, grain refinement, improved strength and abrasion resistance, such as the surface of the gear. It can greatly improve the efficiency of finite element s