摘要：本课题针对铜钢感应加热的熔敷焊接技术，基于有限元法，利用ANSYS软件对铜钢两种异种金属中的高频感熔敷焊的加热过程的温度场实行仿真模拟。运用电磁学、热力学等方面的公式对感应加热的温度场加以计算。采用ANSYS14.5这个软件的GUI操作或者命令流，针对钢管高度为300mm，内径为110mm，钢管外径为130mm，铜环高度为38mm，外径为130mm,铜环顶端距离钢管顶端24mm，感应线圈高度为32mm的工件，在ANSYS软件上建立出合适的铜钢异种金属高频感应焊接的数学模型后对这个过程中的温度场进行模拟。通过这个模拟的结果，可以得出钢基体和铜带的接触面上中间一点的温度循环曲线和加热到一定时间时整个工件的温度分布云图。并统计分析不同参数下得出的数据，找出合适的焊接参数。模拟结果表明，把铜环和线圈的距离设置为8mm，电流参数设置为350A，线圈的顶端比铜环顶端低3mm，焊接时间为130s时，钢基体和铜带的接触面上的温度为1123℃，达到了铜的熔点之上，能满足焊接要求。

关键字:  铜-钢  感应熔敷  焊接参数  数值仿真模拟  ANSYS   温度场

毕业设计说明书外文摘要

Title  Numerical simulation of temperature field of induced deposited copper in steel surface          

Abstract：Based on the finite element method, ANSYS software was used to simulate the temperature field of the heating process in the two kinds of dissimilar metals of copper and steel. The temperature field of induction heating is calculated by using the formula of electromagnetism and thermodynamics. Use ANSYS14.5 software GUI operation or command flow for the workpiece of steel pipe height of 300mm, diameter of 110mm, steel pipe diameter of 130mm, copper ring height of 38mm, diameter of 130mm, copper ring from the top of the top 24mm, induction coil Height of 32mm ,to establish a suitable copper steel dissimilar metal high-frequency induction welding mathematical model of the process after the temperature field to simulate. Through this simulation results, we can get the temperature cycling curve of the steel substrate and the contact surface of the copper strip and the temperature distribution of the whole workpiece when heated to a certain time. Add up and analyze different parameters of the data obtained to find the appropriate welding parameters. The simulation results show that the distance between the copper ring and the coil is set to 8mm, the current parameter is set to 350A, the top of the coil is 3mm lower than the top of the copper ring and the welding time is 130s. The temperature of the contact surface of the steel base and the copper strip is 1123 ℃, reached the melting point of copper above, to meet the welding requirements.

Keywords:  copper and steel,Induction deposited,welding parameters，numerical simulation，ANSYS,temperature field  

目   次

1  引言（或绪论） 1

1.1  本课题的研究背景及意义1

1.2  铜和钢异种金属的焊接…2

1.3  数值模拟和仿真 4

1.4  关于本论文的主要工作与研究内容… 5

2.  感应加热的原理及有限元模型 7

2.1  感应加热原理… 7

2.2  有限元数学模型 8

2.3  本章小结9

3  建立有限元ANSYS模型 10

3.1  根据实际数据建立模型 10

3.2  输入不同材料的物理性能… 10

3.3  划分单元… 11

3.4  求解过程… 13

3.5  本章小结… 13

4  数字模拟数据结果及分析 14

4.1  电流大小对结果的影响 14

4.2  铜环里线圈的距离对结果的影响20

4.3  线圈高度对温度云图的影响 27

4.4  本章小结… 29

结论 31

致谢 …  32

参考文献 … 33