曲柄式飞剪高温剪切过程的数值模拟  

Numerical Simulation of Crank-Type Flying Shear's Hot Cutting Process

作　　者：雷鸣[1] 方建忠[1] 王勤[1] 

机构地区：[1]中冶赛迪工程技术股份有限公司,重庆401122

出　　处：《冶金设备》2017年第1期17-23,共7页Metallurgical Equipment

摘　　要：分析了采用经验公式或实验方法获得剪切力和剪切功的缺陷和难度,提出采用金属韧性断裂研究飞剪高温剪切过程的方法,对此开展了曲柄式飞剪的剪切过程与金属韧性断裂过程的对比分析,确定了金属韧性断裂在剪切模拟上的可行性。在此基础上,探讨了金属韧性断裂模拟剪切的流程,并以某钢为例,开展了大量的实验研究,确定了材料的本构模型、高温剪切下的断裂准则和断裂因子,模拟了曲柄式飞剪在高温下的剪切过程,最终获得了剪切过程中的剪切力和剪切功历程,为曲柄式飞剪的传动计算和结构设计提供基础数据。This article analyze the limitation and difficulty of getting cutting force and cutting energy by ex- periential expressions and experimental method. A method that using the results of metal ductile fracture in researc- hing flying shear＇s hot cutting process is proposed. After compared the cutting process of crank-typo flying shear with the process of metal ductile fracture, comform the feasibility that make use of metal ductile fracture in cutting precess simulation. Based on it, discuss the numerical simulation flow, and take a metal for instance, develop lots of experi- mental research, induce the metal＇s constitutive models, fracture criteria and fracture factor, then a numerical simu- lation of crank-type fly shear＇s cutting process is performed, and finally achive the goal that get the cutting force and cutting energy in cutting process for drive calculation and structural design of crank-type flying shear.

关 键 词：曲柄式飞剪 高温剪切 数值模拟 剪切力和剪切功 断裂准则 

分 类 号：TG333.21[金属学及工艺—金属压力加工]