{"title":"Cohesive Models for Anti-Plane Mode Fracture in Dissimilar Structures: Effect of Small/Large Scale Yielding Conditions on Computed Fracture Load","authors":"","doi":"10.1007/s40997-023-00741-y","DOIUrl":null,"url":null,"abstract":"<h3>Abstract</h3> <p>The study delves into the issue of anti-plane mode cracking in dissimilar structures, commonly encountered in welds, composites and functionally graded materials. Achieving an accurate representation of these structures involves acknowledging a gradual variation of elastic properties across interfaces, achieved by incorporating a non-homogeneous layer characterized by finite width and bounded variable elastic properties. The investigation builds upon a model previously developed employing a numerical solution to a singular integral equation using the Dugdale cohesive law. In this paper, a comparable model based on the finite element method, incorporating an implemented cohesive model is introduced. The primary focus is on calculating the fracture load, allowing for a subsequent comparative analysis of results. The ensuing discussion revolves around the calculated relative sizes of cohesive zones, considering the corresponding implications of small/large-scale yielding conditions. While both approaches yield sufficiently similar fracture load values for small cohesive zone sizes, noticeable scatter is observed in instances of larger cohesive zone sizes.</p>","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":null,"pages":null},"PeriodicalIF":16.4000,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s40997-023-00741-y","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
The study delves into the issue of anti-plane mode cracking in dissimilar structures, commonly encountered in welds, composites and functionally graded materials. Achieving an accurate representation of these structures involves acknowledging a gradual variation of elastic properties across interfaces, achieved by incorporating a non-homogeneous layer characterized by finite width and bounded variable elastic properties. The investigation builds upon a model previously developed employing a numerical solution to a singular integral equation using the Dugdale cohesive law. In this paper, a comparable model based on the finite element method, incorporating an implemented cohesive model is introduced. The primary focus is on calculating the fracture load, allowing for a subsequent comparative analysis of results. The ensuing discussion revolves around the calculated relative sizes of cohesive zones, considering the corresponding implications of small/large-scale yielding conditions. While both approaches yield sufficiently similar fracture load values for small cohesive zone sizes, noticeable scatter is observed in instances of larger cohesive zone sizes.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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