复合铝合金钎焊性能分析（本科毕业论文设计）.doc
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复合铝合金钎焊性能分析（本科毕业论文设计）,摘要铝合金的钎焊是用比铝材熔点低的金属材料作为钎料，用液态钎料润湿铝合金和填充工件接口间隙并使其与铝合金相互扩散的焊接方法。钎焊变形小，接头光滑美观，适合于焊接精密、复杂和由不同材料组成的构件。虽然铝合金的钎焊方法多种多样，但其原理是一样的。在铝合金钎焊过程中产生的应力和变形等...
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复合铝合金钎焊性能分析（本科毕业论文设计）
摘要
铝合金的钎焊是用比铝材熔点低的金属材料作为钎料，用液态钎料润湿铝合金和填充工件接口间隙并使其与铝合金相互扩散的焊接方法。钎焊变形小，接头光滑美观，适合于焊接精密、复杂和由不同材料组成的构件。虽然铝合金的钎焊方法多种多样，但其原理是一样的。
在铝合金钎焊过程中产生的应力和变形等,不仅影响钎焊结构的制造,而且还影响焊接结构工件的使用。这些缺陷主要是由于钎焊时不合理的热过程引起的。钎焊应力是影响钎焊铝合金性能良好的主要问题之一，因此对铝合金钎焊温度场和应力场的定量分析、预测、模拟具有重要的意义。
本文用ANSYS软件对铝合金钎焊性能进行了分析研究,其主要包括焊接温度场和应力应变场的模拟分析。为了获得合理分布的温度场，防止钎料的流动及最大程度的减轻热损伤，本文根据加热原理的特点，利用有限元方法对感应钎焊过程的温度场和应力应变场进行模拟分析， 得出加热过程铝合金温度场分布规律及应力、位移等的分布规律。结果表明，模拟结果与试验数据比较吻合，证明了有限元模拟分析方法的可行性及其优势。
关键词：铝合金钎焊，ANSYS软件，温度场，应力场
ABSTRACT
Aluminum alloy brazing is a welding process that uses aluminum metal materials which has a lower melting point of as a solder, and uses wet solder to fill gaps and make two kinds of materials interdiffusion. The brazing of the Aluminum alloy has a small deformation and smooth joint appearance, and is suitable for sophisticated, complex welding. Although there are different aluminum brazing methods, the principle is the same.
The stress and deformation, brazing structure not only affect the structure, but also affect the use of welding workpiece in the course of aluminum brazing. These deficiencies mainly due to brazing unreasonable during the process of the heat arising. Brazing stress is one of the issues that has an important impact on good performance, so it is very important to simulate the aluminum brazing temperature and stress field of quantitative analysis.
In this paper, aluminum brazing performance is analyzed by ANSYS software, including its main the analysis of welding temperature and stress-strain field .In order to better access to uniform distribution of temperature to ensure that the melting solder and solder to prevent the flow and reduce the maximum degree of heat injury, the better the performance on aluminum alloy brazing, Based on the principle of the characteristics of heating, use of the finite element method. The process of induction brazing temperature stress field simulation and analysis, that heating process aluminum distribution of temperature and stress, such as the distribution of displacement. It also defines a suitable material properties. The results showed that the simulation results and experimental data comparison anastomosis proved that the finite element simulation of the feasibility and advantages.
Keywords：Aluminum brazing，ANSYS software，Temperature，Stress
目 录
中文摘要 Ⅰ
ABSTRACT Ⅱ
1绪论 1
1.1 前言 1
1.2 铝合金钎焊的发展现状 2
1.3 选题意义及背景 4
2 有限元基础及ANSYS软件功能简介 7
2.1 有限元方法简介 7
2.2 有限元程序前后处理技术 7
2.3 铝合金钎焊的发展现状 9
2.3.1 前处理算法 9
2.3.2 后处理技术 9
2.4 有限元软件ANSYS 10
2.4.1 铝合金钎焊的发展现状 10
2.4.2 铝合金钎焊的发展现状 11
2.4.3 铝合金钎焊的发展现状 12
3 复合铝合金的性能及应用 14
3.1 铝合金物理性能 14
3.2 铝合金化学性能 14
3.3 铝合金钎焊性能分析 16
4 铝合金钎焊模拟分析 18
4.1 模拟流程 18
4.2 定义材料的属性 19
4.3 ANSYS有限元模型建立 20
4.4 网格划分 21
4.5实体单元选取 22
4.6焊接温度场的模拟 22
4.7相变潜热 23
4.8求解分析 23
4.9本章小结 23
5 铝合金钎焊的发展现状 24
5.1施加载荷步并求解 24
5.2温度场云图及其分析 24
5.3应力应变和位移云图分析 25
6 结论 27
参考文献 28
致谢 30
摘要
铝合金的钎焊是用比铝材熔点低的金属材料作为钎料，用液态钎料润湿铝合金和填充工件接口间隙并使其与铝合金相互扩散的焊接方法。钎焊变形小，接头光滑美观，适合于焊接精密、复杂和由不同材料组成的构件。虽然铝合金的钎焊方法多种多样，但其原理是一样的。
在铝合金钎焊过程中产生的应力和变形等,不仅影响钎焊结构的制造,而且还影响焊接结构工件的使用。这些缺陷主要是由于钎焊时不合理的热过程引起的。钎焊应力是影响钎焊铝合金性能良好的主要问题之一，因此对铝合金钎焊温度场和应力场的定量分析、预测、模拟具有重要的意义。
本文用ANSYS软件对铝合金钎焊性能进行了分析研究,其主要包括焊接温度场和应力应变场的模拟分析。为了获得合理分布的温度场，防止钎料的流动及最大程度的减轻热损伤，本文根据加热原理的特点，利用有限元方法对感应钎焊过程的温度场和应力应变场进行模拟分析， 得出加热过程铝合金温度场分布规律及应力、位移等的分布规律。结果表明，模拟结果与试验数据比较吻合，证明了有限元模拟分析方法的可行性及其优势。
关键词：铝合金钎焊，ANSYS软件，温度场，应力场
ABSTRACT
Aluminum alloy brazing is a welding process that uses aluminum metal materials which has a lower melting point of as a solder, and uses wet solder to fill gaps and make two kinds of materials interdiffusion. The brazing of the Aluminum alloy has a small deformation and smooth joint appearance, and is suitable for sophisticated, complex welding. Although there are different aluminum brazing methods, the principle is the same.
The stress and deformation, brazing structure not only affect the structure, but also affect the use of welding workpiece in the course of aluminum brazing. These deficiencies mainly due to brazing unreasonable during the process of the heat arising. Brazing stress is one of the issues that has an important impact on good performance, so it is very important to simulate the aluminum brazing temperature and stress field of quantitative analysis.
In this paper, aluminum brazing performance is analyzed by ANSYS software, including its main the analysis of welding temperature and stress-strain field .In order to better access to uniform distribution of temperature to ensure that the melting solder and solder to prevent the flow and reduce the maximum degree of heat injury, the better the performance on aluminum alloy brazing, Based on the principle of the characteristics of heating, use of the finite element method. The process of induction brazing temperature stress field simulation and analysis, that heating process aluminum distribution of temperature and stress, such as the distribution of displacement. It also defines a suitable material properties. The results showed that the simulation results and experimental data comparison anastomosis proved that the finite element simulation of the feasibility and advantages.
Keywords：Aluminum brazing，ANSYS software，Temperature，Stress
目 录
中文摘要 Ⅰ
ABSTRACT Ⅱ
1绪论 1
1.1 前言 1
1.2 铝合金钎焊的发展现状 2
1.3 选题意义及背景 4
2 有限元基础及ANSYS软件功能简介 7
2.1 有限元方法简介 7
2.2 有限元程序前后处理技术 7
2.3 铝合金钎焊的发展现状 9
2.3.1 前处理算法 9
2.3.2 后处理技术 9
2.4 有限元软件ANSYS 10
2.4.1 铝合金钎焊的发展现状 10
2.4.2 铝合金钎焊的发展现状 11
2.4.3 铝合金钎焊的发展现状 12
3 复合铝合金的性能及应用 14
3.1 铝合金物理性能 14
3.2 铝合金化学性能 14
3.3 铝合金钎焊性能分析 16
4 铝合金钎焊模拟分析 18
4.1 模拟流程 18
4.2 定义材料的属性 19
4.3 ANSYS有限元模型建立 20
4.4 网格划分 21
4.5实体单元选取 22
4.6焊接温度场的模拟 22
4.7相变潜热 23
4.8求解分析 23
4.9本章小结 23
5 铝合金钎焊的发展现状 24
5.1施加载荷步并求解 24
5.2温度场云图及其分析 24
5.3应力应变和位移云图分析 25
6 结论 27
参考文献 28
致谢 30
