| 查看: 711 | 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
药化及相关博士的申请
已经有3人回复
-
一篇MDPI论文改变了学习工作和生活
已经有4人回复
-
一个化合物的合成路线：CAS:367929-02-0 名称：8β-乙烯基雌二醇
已经有4人回复
-
太白金星有点烦
已经有3人回复
-
中国地质大学（北京）博士招生补录，数理学院材料科学与工程专业和材料与化工专业
已经有3人回复
-
河北省自然基金
已经有8人回复
-
收到国自然专家邀请后几年才会有本子送过来评
已经有3人回复
-
考博
已经有3人回复
-
有没有快的中文核心比较快录用的，纳米材料光催化
已经有4人回复
-
有人投过CCC中国控制会议吗？
已经有3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