首页> 外文期刊>Composite Structures >A study of intra-laminar damage in double-lap, multi-bolt, composite joints with variable clearance using continuum damage mechanics
【24h】

A study of intra-laminar damage in double-lap, multi-bolt, composite joints with variable clearance using continuum damage mechanics

机译:利用连续损伤机理研究可变间隙双节距,多螺栓,复合节的层内损伤

获取原文
获取原文并翻译 | 示例
           

摘要

A damage modelling approach, based on a continuum damage model (CDM) formulation, is proposed and applied to the problem of double-lap, multi-bolt, fibre-reinforced composite joints with variable clearances, subjected to quasi-static tensile loading. A new method of dealing with fibre failure is included in the CDM model, which is implemented in a commercial implicit finite element analysis code. The model is validated at element and structural levels by comparing with experimental data. It has been found that, for the joints examined in this paper, our formulation is capable of modelling development of damage from bearing failure onset all the way to ultimate catastrophic net-tension failure without numerical problems, which is an advance over previous work. The predictions from the CDM model of net-tension failure modes and ultimate loads are in good agreement with those from the experiments. Furthermore the model is capable of explaining some non-intuitive experimental findings, such as the larger energy absorption obtained in joints with higher clearances.
机译:提出了一种基于连续损伤模型(CDM)公式的损伤建模方法,并将其应用于具有可变间隙的双搭接,多螺栓,纤维增强复合材料接头的准静态拉伸载荷问题。 CDM模型中包含一种处理光纤故障的新方法,该方法以商业化的隐式有限元分析代码实现​​。通过与实验数据进行比较,可以在元素和结构级别上验证该模型。已经发现,对于本文所研究的接头,我们的公式能够模拟从轴承失效开始到最终的灾难性净拉力破坏的破坏发展,而没有数值问题,这是对先前工作的一个进步。 CDM模型的净拉力破坏模式和极限载荷的预测与实验中的预测非常吻合。此外,该模型能够解释一些非直觉的实验发现,例如在具有较高间隙的接头中获得更大的能量吸收。

著录项

  • 来源
    《Composite Structures》 |2014年第sepaaocta期|441-452|共12页
  • 作者单位

    Northwestern Polytechnical University, Xi'an, China,Department of Mechanical, Aeronautical and Biomedical Engineering, Irish Centre for Composites Research, Materials and Surface Science Institute, University of Limerick, Limerick, Ireland;

    Department of Mechanical, Aeronautical and Biomedical Engineering, Irish Centre for Composites Research, Materials and Surface Science Institute, University of Limerick, Limerick, Ireland;

    Department of Mechanical, Aeronautical and Biomedical Engineering, Irish Centre for Composites Research, Materials and Surface Science Institute, University of Limerick, Limerick, Ireland;

    Northwestern Polytechnical University, Xi'an, China;

    Department of Mechanical, Aeronautical and Biomedical Engineering, Irish Centre for Composites Research, Materials and Surface Science Institute, University of Limerick, Limerick, Ireland;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Composites; Bolted joints; Clearance; Continuum damage mechanics; Stiffness; In-plane damage;

    机译:复合材料;螺栓连接;间隙;连续损伤力学;刚性;面内损坏;

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