Abstract
Based on the standpoint to be all study strength and life problem of materials on material, continuum-damage, micro-fracture and macro-fracture mechanics, Base on the standpoint to take for the crack size a also to be a damage variable like as the damage variable D, by means of a material damage simple model and the two directions combined coordinate system, studies the mechanisms and features in evolving process of material behaviors under cyclic loading. According to lots of calculation and analysis by material, continuum-damage, micro-fracture, macro-fracture mechanics, finds some alike and different rules on the variables, equations, curves and material constants in varied subjects, thereby quests their correlations each other. This design is mainly research and analysis of materials in the mechanical force under the stress - strain relations，The preparation of tension and compression, shear, bending and torsion static strength program, to complete component materials for conventional static strength calculation of the mandate。The Procedures based on C++ Builder 6.0 was developed, which can be used to analyse the strength and life of these components. This Procedures has some remarkable characters, for example, it is more stronger and faster calculating function, and it permits operator to choose stress calculation or stress intensity factor of life calculation flexibly. Further more, it can complete the work which can’t be done by manual.
Key words： Life; Shear; Bending ; Reverse ; Procedures ; Fatigue and Fracture.
目 录
中文摘要 I
英文摘要 II
目录 III
第一章 绪论 1
1.1 课题背景 1
1.2 国内外研究现状 1
第二章 压缩机连杆的强度寿命计算 5
2.1 往复式压缩机的简介 5
2.2 连杆材料在强度计算上的交叉与沟通 5
2.3 损伤演变行为计算方程的研究和分析 10
2.4 在寿命估算上交叉与沟通 14
2.5 20号钢连杆的寿命表达式 20
第三章 表达式的编制 21
3.1 可视化开发工具-C++ Builder6.0介绍 21
3.2 人机交互的界面实现 21
3.3 编写计算表达式的程序 25
3.4 事例验证 25
第四章 总结与展望 26
4.1 总结 26
4.2 展望 26
参考文献 27
致谢 28
