| 查看: 734 | 回复: 1 | |||
[求助]
急求一篇英文期刊的引言（什么类型都可以，只要引言）
|
|
急求一篇英文期刊的引言（什么类型都可以，只要引言）急求一篇英文期刊的引言（什么类型都可以，只要引言） 十分感谢  |
回复此楼» 猜你喜欢
FileCode能看出啥？
已经有23人回复
-
应该是93bebmhtak前后十一个字符比较关键
已经有36人回复
-
关于Filecode分析方法
已经有9人回复
-
2019年青年基金涵评意见，大家看看几个A，几个B?
已经有10人回复
-
不应该看fileCode
已经有6人回复
-
好奇怪的filecode
已经有6人回复
-
长年满屏的广告，版主太不责任了。基金也等的急
已经有4人回复
-
filecode
已经有15人回复
-
职称评审，求友友推荐见刊最快的期刊
已经有4人回复
-
奇怪，两个人的filecode固定段从头到尾一模一样
已经有10人回复
霜小妹二
木虫 (正式写手)
哈哈
- 博学EPI: 15
- 应助: 154 (高中生)
- 金币: 1806.7
- 红花: 25
- 帖子: 531
- 在线: 66小时
- 虫号: 3237838
- 注册: 2014-05-27
- 专业: 机械动力学
【答案】应助回帖
|
Abstract Based on the models about transformation kinetics, transformation plasticity and creep strain, a numerical modeling used to simulate the metallo-thermo-mechanical behaviors during quenching and tempering is presented. And this modeling is coded into program Numerical Simulation of Heat Treatment (NSHT), which is veri!ed to be e9ective in simulation of heat treatment by comparing with the measured results. With this program, conventional quenching and tempering processes used for treatment of a 6 MW rotor are analyzed, the calculated results of which are compared with those of the newly designed processes. Based on these comparisons, some pieces of advice about heat treatment are given as instructions to industrial processing, which are proved to be e9ective in industry. Introduction During heat treatment of forgings with large sizes, internal stresses arise due to temperature gradient and unsynchronous transformation in the surface layer and inner layer [1,2]. Sometimes these stresses are high enough for the appearance of crack, which even possibly lead to fracture of work-piece. In order to avoid this, it is necessary to decrease the magnitude of internal stresses as soon as possible. Because physical simulation is diBcult to establish a model in satisfying the similarity criterions simultaneously in thermal Cow, microstructure change and stress distribution, !nite element method is explored to present and analyze the evolution of internal stresses through coupled calculations of metallo-thermo-mechanical behaviors during thermo-mechanical processing. Besides HEARTS [3,4] and SYSWELD [5] being developed mainly for numerical simulation of heat treatment, other commercial software packages like ABAQUS [6], DEFORM [7] and so on are also enlarging their functions by considering heat treatment. However, most of them considered only one or two parts of the following aspects—stress-induced transformation kinetics, transformation plasticity and creep strain. In this work, a FEM modeling for quenching and tempering processes is established by incorporating these three aspects, and software Numerical Simulation of Heat Treatment NSHT based on this modeling is developed and then used to calculate metallo-thermo-mechanical behaviors during quenching and tempering processes of a 6 MW rotor. 完了~ paper题目： A FEM modeling of quenching and tempering and its application in industrial engineering |
2楼2016-06-07 14:02:44
