Fatigue State Quantitative Analysis of TA1 Titanium Alloy Clinched Joints Based on Dynamic Response Characterization

IF 3.1 2区材料科学 Q2 ENGINEERING, MECHANICAL

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-02-25 DOI:10.1111/ffe.14612

Lei Lei, Huabin Zhang, Zhiqiang Zhao, Ming Yan, Ye Shi, Jiawei Sun

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引用次数: 0

Abstract

The TA1 titanium alloy single-lap clinched joint was investigated focusing on fatigue damage prediction. A model was developed to calculate fatigue damage and remaining life by analyzing changes in natural frequency under fatigue conditions, combined with existing damage models. Based on the law of strength degradation and the existing strength degradation model, a strength degradation index model is established to predict the residual strength. Additionally, the cycle ratio was used to link natural frequency changes with strength degradation. Experimental data showed similar trends between natural frequency changes and strength degradation during fatigue. A predictive model for residual strength and remaining life was established by integrating these findings with classical models, and a predictive model for residual strength and remaining life was established. Validation demonstrated that the two-group data model, which incorporates both strength degradation and natural frequency change, offers more accurate predictions than the single-group data model.

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基于动态响应表征的TA1钛合金铰接接头疲劳状态定量分析

对TA1钛合金单搭接铰进行了疲劳损伤预测研究。结合现有的损伤模型，通过分析疲劳条件下固有频率的变化，建立了计算疲劳损伤和剩余寿命的模型。基于强度退化规律和已有的强度退化模型，建立了强度退化指标模型来预测残余强度。此外，使用循环比将固有频率变化与强度退化联系起来。实验数据表明，疲劳过程中固有频率变化与强度退化的趋势相似。将所得结果与经典模型相结合，建立了残余强度和剩余寿命的预测模型，建立了残余强度和剩余寿命的预测模型。验证表明，结合强度退化和固有频率变化的两组数据模型比单组数据模型提供更准确的预测。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Fatigue & Fracture of Engineering Materials & Structures 工程技术-材料科学：综合

CiteScore

6.30

自引率

18.90%

发文量

256

审稿时长

4 months

期刊介绍： Fatigue & Fracture of Engineering Materials & Structures (FFEMS) encompasses the broad topic of structural integrity which is founded on the mechanics of fatigue and fracture, and is concerned with the reliability and effectiveness of various materials and structural components of any scale or geometry. The editors publish original contributions that will stimulate the intellectual innovation that generates elegant, effective and economic engineering designs. The journal is interdisciplinary and includes papers from scientists and engineers in the fields of materials science, mechanics, physics, chemistry, etc.