{"title":"Analysis of thermoelastic crack problems in two-dimensional orthotropic materials by PDDO method","authors":"Jun Lei, Yong Lu, Yanpeng Gong, Weihui Hu","doi":"10.1007/s10704-026-00917-y","DOIUrl":null,"url":null,"abstract":"<div><p>As a novel meshless method, the Peridynamic Differential Operator (PDDO) method has distinct advantages in naturally handling discontinuous problems. In this study, it is further extended to investigate thermoelastic fracture problems in two-dimensional (2D) orthotropic materials. The stress intensity factors (SIFs) at crack tips are evaluated by using an interaction integral. A modified maximum circumferential stress criterion is applied to determine the crack propagation direction. Then, the meshless PDDO is employed to simulate crack propagation paths in some 2D structures with various geometric configurations under coupled thermo-mechanical loadings. The present results are compared with the existing numerical results to validate its effectiveness and high accuracy in computing the SIFs and simulating crack propagation paths.</p></div>","PeriodicalId":590,"journal":{"name":"International Journal of Fracture","volume":"250 2","pages":""},"PeriodicalIF":2.5000,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Fracture","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10704-026-00917-y","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
As a novel meshless method, the Peridynamic Differential Operator (PDDO) method has distinct advantages in naturally handling discontinuous problems. In this study, it is further extended to investigate thermoelastic fracture problems in two-dimensional (2D) orthotropic materials. The stress intensity factors (SIFs) at crack tips are evaluated by using an interaction integral. A modified maximum circumferential stress criterion is applied to determine the crack propagation direction. Then, the meshless PDDO is employed to simulate crack propagation paths in some 2D structures with various geometric configurations under coupled thermo-mechanical loadings. The present results are compared with the existing numerical results to validate its effectiveness and high accuracy in computing the SIFs and simulating crack propagation paths.
期刊介绍：
The International Journal of Fracture is an outlet for original analytical, numerical and experimental contributions which provide improved understanding of the mechanisms of micro and macro fracture in all materials, and their engineering implications.
The Journal is pleased to receive papers from engineers and scientists working in various aspects of fracture. Contributions emphasizing empirical correlations, unanalyzed experimental results or routine numerical computations, while representing important necessary aspects of certain fatigue, strength, and fracture analyses, will normally be discouraged; occasional review papers in these as well as other areas are welcomed. Innovative and in-depth engineering applications of fracture theory are also encouraged.
In addition, the Journal welcomes, for rapid publication, Brief Notes in Fracture and Micromechanics which serve the Journal''s Objective. Brief Notes include: Brief presentation of a new idea, concept or method; new experimental observations or methods of significance; short notes of quality that do not amount to full length papers; discussion of previously published work in the Journal, and Brief Notes Errata.
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