• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Reliability and optimization of structural systems >Reliability analysis for adhesive bonded composite stepped lap joints loaded in fatigue
【24h】

Reliability analysis for adhesive bonded composite stepped lap joints loaded in fatigue

机译：疲劳载荷下胶结复合阶梯搭接接头的可靠性分析

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

This paper describes a probabilistic approach to calculate the reliability of adhesive bonded composite stepped lap joints loaded in fatigue using three-dimensional finite element analysis (FEA). A method for progressive damage modelling is used to assess fatigue damage accumulation and residual strength under fully reversed cyclic loading based on stiffness/strength degradation. The FEA simulations are conducted using the commercial FEA code ANSYS 12.1. A design equation for fatigue failure of wind turbine blades is chosen based on recommendations given in the wind turbine standard IEC 61400-1, where partial safety factors are introduced together with characteristic values. Asymptotic sampling is used to estimate the reliability with support points generated by randomized Sobol sequences. The predicted reliability level is compared with the implicitly required target reliability level defined by the wind turbine standard IEC 61400-1. Finally, an approach for the assessment of the reliability of adhesive bonded composite stepped lap joints loaded in fatigue is presented. The introduced methodology can be applied in the same way to calculate the reliability level of wind turbine blade components loaded in fatigue.
机译：本文介绍了一种概率方法，该方法使用三维有限元分析（FEA）计算疲劳载荷下的粘结复合阶梯搭接接头的可靠性。用于渐进式损伤建模的方法用于基于刚度/强度退化来评估完全反向循环载荷下的疲劳损伤累积和残余强度。使用商业FEA代码ANSYS 12.1进行FEA仿真。根据风力涡轮机标准IEC 61400-1中给出的建议，选择了用于风力涡轮机叶片疲劳失效的设计方程式，其中引入了部分安全系数以及特征值。渐近采样用于估计随机Sobol序列生成的支持点的可靠性。将预测的可靠性级别与风力发电机标准IEC 61400-1所定义的隐式要求的目标可靠性级别进行比较。最后，提出了一种评估疲劳载荷下复合材料阶梯搭接接头可靠性的方法。可以以相同的方式应用引入的方法，以计算疲劳载荷下的风力涡轮机叶片部件的可靠性水平。

著录项

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