FATIGUE LIFE PREDICTION OF NOTCHED STRUCTURE USING COMBINED CRITICAL PLANE-CRITICAL DISTANCE APPROACH (MT)

LIAO Ding; ZHU ShunPeng; GAO JieWei; NIU XiaoPeng; HE JinChao

doi:10.16579/j.issn.1001.9669.2023.02.027

您当前的位置：

首页 >

文章列表页 >

FATIGUE LIFE PREDICTION OF NOTCHED STRUCTURE USING COMBINED CRITICAL PLANE-CRITICAL DISTANCE APPROACH (MT)

更新时间：2023-06-09

- FATIGUE LIFE PREDICTION OF NOTCHED STRUCTURE USING COMBINED CRITICAL PLANE-CRITICAL DISTANCE APPROACH (MT)
- Journal of Mechanical Strength Issue 2, Pages: 454-461(2023)
- 作者机构：
  
  1. 电子科技大学机械与电气工程学院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2023.02.027
  CLC：
扫描看全文
LIAO Ding, ZHU ShunPeng, GAO JieWei, et al. FATIGUE LIFE PREDICTION OF NOTCHED STRUCTURE USING COMBINED CRITICAL PLANE-CRITICAL DISTANCE APPROACH (MT). [J]. Journal of Mechanical Strength (2):454-461(2023)
DOI：

LIAO Ding, ZHU ShunPeng, GAO JieWei, et al. FATIGUE LIFE PREDICTION OF NOTCHED STRUCTURE USING COMBINED CRITICAL PLANE-CRITICAL DISTANCE APPROACH (MT). [J]. Journal of Mechanical Strength (2):454-461(2023) DOI： 10.16579/j.issn.1001.9669.2023.02.027.

摘要

工程中，为满足各种功能性需求，几何不连续特征广泛存在；同时，受疲劳影响的结构在服役时大都承受复杂多轴载荷作用。因而，亟需精确的缺口结构多轴疲劳寿命预测模型为结构抗疲劳设计及安全使役保障提供理论支撑。通过将临界平面法中经典的Fatemi-Socie模型与临界距离理论结合，提出了一种多轴载荷作用下缺口结构疲劳寿命预测方法，并以TC4轴肩试件疲劳试验数据验证了其有效性。结果显示，该方法可克服直接基于危险点应力应变数据预测寿命时的保守估计问题，预测值与真实值误差在2倍以内。最后，将该方法应用于某压气机盘疲劳寿命预测。

Abstract

In engineering practice, due to various functional requirements, structures with geometric discontinuities occur widely; in addition, most structures undergo complex multiaxial loads, which drives the development of relevant theories. As a result, to provide reference for structural anti-fatigue design and ensuring their operation safety, the establishment of fatigue lifing methods for notched components under multiaxial loads is critical and indispensable. In this paper, by combining the popular Fatemi-Socie critical plane model with the critical distance theory, a fatigue lifing model for notched structures under multiaxial loads was established, and its effectiveness was verified with the fatigue test data of TC4 stepped shaft specimens. Results show that the proposed model can overcome the conservative estimation problem when performing fatigue lifing based on the stress-strain data of critical points, with all predicted fatigue lives within two-time error bands. Finally, the method was applied to the fatigue life prediction of a turbine compressor disc.

关键词

疲劳缺口压气机盘临界平面临界距离寿命预测

Keywords

FatigueNotchCompressor discCritical planeCritical distanceLife prediction

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

MODIFICATION METHOD OF STRAIN-LIFE CURVES UNDER DIFFERENT SURFACE CONDITIONS OF COMPONENTS (MT)

FATIGUE PERFORMANCE ANALYSIS OF VASCULAR STENT BASED ON TWO-WAY FLUID-SOLID COUPLING (MT)

RELIABILITY ANALYSIS OF MEDICAL EQUIPMENT BASED ON q-WEIBULL DISTRIBUTION (MT)

Related Author

No data

Related Institution

Engineering Technology Research Center,AVIC Landing Gear Advanced Manufacturing Corporation,Ltd.

State Key Laboratory of High-Performance Complex Manufacturing,College of Mechanical and Electrical Engineering,Central South University

School of Mechanical Engineering,Xinjiang University

College of Information Engineering,Tarim University

School of Biomedical Engineering, Southern Medical University

⁰