润滑条件对热力模拟压缩试验变形行为影响的数值模拟研究  

Simulation research on influence of lubrication conditions on deformation behavior in thermal-mechanically simulated compression test

作　　者：姚雷[1] 郑芳[1] 张戈[1] 

机构地区：[1]宝山钢铁股份有限公司研究院,上海201900

出　　处：《宝钢技术》2013年第1期15-18,共4页Baosteel Technology

摘　　要：针对热模拟压缩变形试验中的模具与材料之间的润滑情况即二者之间的面摩擦因数对试验的影响,使用数值模拟方法进行了研究,考察了不同摩擦因数对于压缩试验中的变形抗力、变形后试样应变分布和应变速率分布的影响。结果表明,摩擦因数对载荷力也就是应力—应变曲线没有显著影响,而对应变和应变速率的分布则有较大影响,会导致试样变形不均匀。In order to determine the influence of lubrication conditions （friction coefficient） between the mould and the material on the thermal-mechanically simulated compression test, numerical simulation was carried out to study the deformation resistance, strain distribution and strain rate of the sample during the test at different friction coefficients. The results showed that the friction coefficient had no influence on the deformation resistance, but relatively obvious influence on the strain distribution and strain rate, which would result in uneven deformation of the sample.

关 键 词：热力模拟 压缩 摩擦因数 应变 应变速率 变形抗力 

分 类 号：TG142.1[一般工业技术—材料科学与工程]