三维损伤容限设计：离面约束理论与疲劳断裂准则

doi:10.3901/JME.2021.16.087

机械工程学报 ›› 2021, Vol. 57 ›› Issue (16): 87-105.doi: 10.3901/JME.2021.16.087

• 特邀专刊：先进设计制造技术前沿：重要装备的可靠性保障 • 上一篇下一篇

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三维损伤容限设计：离面约束理论与疲劳断裂准则

于培师^1,2, 赵军华^1,2, 郭万林³

1. 江南大学江苏省食品先进制造装备技术重点实验室无锡 214122;
2. 江南大学机械工程学院无锡 214122;
3. 南京航空航天大学机械结构力学及控制国家重点实验室南京 210016

收稿日期:2020-08-31 修回日期:2021-01-25 出版日期:2021-08-20 发布日期:2021-11-16
通讯作者: 赵军华(通信作者),男,1979年出生,博士,教授,博士研究生导师。主要研究方向为宏微纳结构机械性能的跨尺度理论、实验及数值模拟。E-mail:junhua.zhao@163.com
作者简介:于培师,男,1982年出生,博士,副教授。主要研究方向为疲劳与断裂力学、直书写3D打印传感器技术。E-mail:ypsnuaa@163.com;郭万林,男,1960年出生,博士,教授,中国科学院院士。主要研究方向为三维断裂力学、纳尺度物理力学。E-mail:wlguo@nuaa.edu.cn
基金资助:
国家自然科学基金（11972171）、江苏省自然科学基金（BK20180031）和中国博士后科学基金（2018M630513）资助项目。

Three-dimensional Damage Tolerance Design: Out-of-plane Constraint Theory and Fatigue/Fracture Criteria

YU Peishi^1,2, ZHAO Junhua^1,2, GUO Wanlin³

1. Jiangsu Key Laboratory of Advanced Food Monufacturing Equipment and Techndogy, Jiangnan University, Wuxi 214122;
2. School of Mechanical Engineering, Jiangnan University, Wuxi 214122;
3. State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016

Received:2020-08-31 Revised:2021-01-25 Online:2021-08-20 Published:2021-11-16

摘要/Abstract

摘要： 损伤容限设计是为保证含裂纹结构安全而发展的抗疲劳断裂设计方法。其核心思想是：承认构件中存在初始裂纹，基于断裂力学理论对裂纹疲劳扩展寿命和结构剩余强度进行分析和试验验证，并结合定期检查，保证结构在服役中裂纹不会发生失稳扩展。对于承受交变载荷的结构，如飞机、轮船、压力容器等，损伤容限设计思想已成为保证大型装备服役安全性和经济性相统一的科学设计理念。在回顾飞机结构强度设计理念发展的基础上，总结了损伤容限设计思想的科学内涵；阐明了损伤容限设计的理论基础—断裂力学—由二维理论发展到三维理论的必要性；详细介绍了三维损伤容限设计的理论、方法与应用。最后，对损伤容限设计的进一步发展作了简要展望。

关键词: 离面约束因子, 损伤容限设计, 三维断裂力学, 三维断裂准则, 三维裂纹扩展模型

Abstract: The damage tolerance design is developed to ensure the safety of structures with cracks based on anti-fatigue and fracture design strategy. The key idea of this design principle is as follow:to avoid unstable crack propagation in engineering structure with inevitable initial defect, the fatigue crack growth life and residual strength of the structure with crack should be analyzed and verified in combination with regular maintenance. For the structures subjected to alternating loadings-such as aircrafts, ships, pressure vessels and so on-the conception of damage tolerance design has been widely recognized as the scientific principle to ensure safety and economic efficiency of large-scale equipments. In this paper we firstly summarize the scientific connotation of damage tolerance design based on reviewing the development of strength design concept for aircraft structures. Then we clarify the necessity for developing the theoretical basis of damage tolerance design from two-dimensional fracture theory to three-dimensional fracture theory. After that, the theory, method and application of three-dimensional damage tolerance design were described in detail. Finally, the future development trends of damage tolerance design are briefly prospected.

Key words: out-of-plane constraint, three-dimensional fracture mechanics, damage tolerance design, fracture criterion, crack propagation

中图分类号:

O346

于培师, 赵军华, 郭万林. 三维损伤容限设计：离面约束理论与疲劳断裂准则[J]. 机械工程学报, 2021, 57(16): 87-105.

YU Peishi, ZHAO Junhua, GUO Wanlin. Three-dimensional Damage Tolerance Design: Out-of-plane Constraint Theory and Fatigue/Fracture Criteria[J]. Journal of Mechanical Engineering, 2021, 57(16): 87-105.

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三维损伤容限设计：离面约束理论与疲劳断裂准则

Three-dimensional Damage Tolerance Design: Out-of-plane Constraint Theory and Fatigue/Fracture Criteria

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