F. Bobaru, J. Mehrmashhadi, Ziguang Chen, S. Niazi
{"title":"纤维增强复合材料的层内断裂:围动力学分析","authors":"F. Bobaru, J. Mehrmashhadi, Ziguang Chen, S. Niazi","doi":"10.12783/ASC33/26039","DOIUrl":null,"url":null,"abstract":"In fiber reinforced composites (FRCs), microcracks often initiate at the interface between fibers and the matrix, or from pores in the matrix. With an explicit microstructure representation, a peridynamic model can simulate the initiation, growth, and coalescence of intraply microcracks into macrocracks in the transverse loading of a FRC. The size of the simulated sample, in this case, is limited by the computational cost. For lamina-level simulations, we employ a homogenization strategy for the transversely loaded FRC with a peridynamic model, the Intermediately Homogenized Peridynamic (IH-PD) model for two-phase composites. We compare our results with three-point bending experiments from the literature. The results show that the IH-PD model mimics the tortuous crack path observed experimentally, without having to rely on the detailed microstructure. Moreover, the IH-PD results for the load versus crack opening displacement match very well the experimentally measured data.","PeriodicalId":337735,"journal":{"name":"American Society for Composites 2018","volume":"42 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"20","resultStr":"{\"title\":\"Intraply Fracture in Fiber-Reinforced Composites: A Peridynamic Analysis\",\"authors\":\"F. Bobaru, J. Mehrmashhadi, Ziguang Chen, S. Niazi\",\"doi\":\"10.12783/ASC33/26039\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In fiber reinforced composites (FRCs), microcracks often initiate at the interface between fibers and the matrix, or from pores in the matrix. With an explicit microstructure representation, a peridynamic model can simulate the initiation, growth, and coalescence of intraply microcracks into macrocracks in the transverse loading of a FRC. The size of the simulated sample, in this case, is limited by the computational cost. For lamina-level simulations, we employ a homogenization strategy for the transversely loaded FRC with a peridynamic model, the Intermediately Homogenized Peridynamic (IH-PD) model for two-phase composites. We compare our results with three-point bending experiments from the literature. The results show that the IH-PD model mimics the tortuous crack path observed experimentally, without having to rely on the detailed microstructure. Moreover, the IH-PD results for the load versus crack opening displacement match very well the experimentally measured data.\",\"PeriodicalId\":337735,\"journal\":{\"name\":\"American Society for Composites 2018\",\"volume\":\"42 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2018-11-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"20\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"American Society for Composites 2018\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.12783/ASC33/26039\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"American Society for Composites 2018","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.12783/ASC33/26039","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Intraply Fracture in Fiber-Reinforced Composites: A Peridynamic Analysis
In fiber reinforced composites (FRCs), microcracks often initiate at the interface between fibers and the matrix, or from pores in the matrix. With an explicit microstructure representation, a peridynamic model can simulate the initiation, growth, and coalescence of intraply microcracks into macrocracks in the transverse loading of a FRC. The size of the simulated sample, in this case, is limited by the computational cost. For lamina-level simulations, we employ a homogenization strategy for the transversely loaded FRC with a peridynamic model, the Intermediately Homogenized Peridynamic (IH-PD) model for two-phase composites. We compare our results with three-point bending experiments from the literature. The results show that the IH-PD model mimics the tortuous crack path observed experimentally, without having to rely on the detailed microstructure. Moreover, the IH-PD results for the load versus crack opening displacement match very well the experimentally measured data.