• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Progressive Failure Analysis of Composite Materials Using the Puck Failure Criteria
【24h】

Progressive Failure Analysis of Composite Materials Using the Puck Failure Criteria

机译：使用圆盘破坏准则的复合材料渐进破坏分析

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Fiber reinforced composites have been used in various engineering structures and applications especially in naval, automotive, aeronautical and sports industries. These composite materials generally exhibit brittle damage behavior. The anisotropy in the material and different kinds of failure mechanisms make it difficult to accurately characterize the behavior of composite materials. There have been many failure criteria proposed in literature.;In the present work, the progressive failure of composite materials is analyzed using the Puck failure criteria to detect damage initiation. The Puck failure criteria is a robust, versatile criterion which can be used for the progressive failure analysis of continuous fiber unidirectional composite laminates. The ABAQUS user-defined material subroutine UMAT was developed to apply the failure criteria. The model is implemented with two different post failure degradation schemes. A partial discount method and a gradual stiffness degradation method is implemented and the results using these degradation models are compared. The model was validated using experimental data and digital image correlation (DIC) performed on a single layer lamina with a central hole loaded under tension. A second validation was conducted by comparing the failure loads of composite laminates with a central hole and different stacking sequences, loaded under inplane tension that are available in literature with the failure loads predicted by the model. The validation cases confirmed that the model results were in good agreement with the experimental results.
机译：纤维增强复合材料已用于各种工程结构和应用中，尤其是在海军，汽车，航空和体育行业。这些复合材料通常表现出脆性破坏行为。材料的各向异性和不同的破坏机理使得难以准确表征复合材料的性能。文献中提出了许多破坏准则。在当前工作中，使用帕克破坏准则分析复合材料的渐进破坏，以检测破坏的开始。帕克失效准则是一种可靠的通用准则，可用于连续纤维单向复合材料层压板的渐进式失效分析。 ABAQUS用户定义的物料子程序UMAT的开发适用于失效标准。该模型通过两种不同的故障后降级方案来实现。实施了部分折现法和渐进刚度退化方法，并比较了使用这些退化模型的结果。使用实验数据和数字图像相关性（DIC）对单层薄片进行了验证，该薄片具有在张力下加载的中心孔。通过比较具有中心孔和不同堆叠顺序的复合材料层合板的破坏载荷（在文献中可获得的平面内拉伸载荷）与模型预测的破坏载荷，进行了第二次验证。验证案例证实模型结果与实验结果吻合良好。

著录项

  • 作者

    Kodagali, Karan.;

  • 作者单位

    University of South Carolina.;

  • 授予单位 University of South Carolina.;
  • 学科 Mechanical engineering.
  • 学位 M.S.
  • 年度 2017
  • 页码 86 p.
  • 总页数 86
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号