首页> 外文学位 >Prediction of mechanical properties of polymers under cyclic loading.
【24h】

Prediction of mechanical properties of polymers under cyclic loading.

机译:循环载荷下聚合物力学性能的预测。

获取原文
获取原文并翻译 | 示例

摘要

The prediction accuracy of mechanical properties under fatigue loading in engineering plastics is increasingly important. In this study, the resistance to flexural and tensile cyclic loading of brittle and ductile materials was investigated respectively. The experimental results were then compared with theoretical prediction based on two existing residual strength degradation models, and conditions were examined to improve the model's applicability. The residual mechanical properties of the two materials were also evaluated and compared.;A correlation between parameters for a model and loading conditions was proposed. It allows the representation of fatigue life and possibly the residual strength with respect to stress ratio using a minimum number of experimental data. The observation of decreasing total energy absorbed by the specimen with increasing number of fatigue cycles in ductile material provided an insight in developing a fatigue model based on the energy criteria.
机译:工程塑料在疲劳载荷下的机械性能预测精度越来越重要。在这项研究中,分别研究了脆性和延性材料对弯曲和拉伸循环载荷的抵抗力。然后,将实验结果与基于两个现有残余强度退化模型的理论预测进行比较,并研究了改善模型适用性的条件。还评估并比较了两种材料的残余机械性能。提出了模型参数与加载条件之间的相关性。它可以使用最少数量的实验数据来表示疲劳寿命,甚至可以表示相对于应力比的残余强度。随着延性材料中疲劳循环次数的增加,样品吸收的总能量减少,这一发现为根据能量标准建立疲劳模型提供了一个见识。

著录项

  • 作者

    Dick, Tik Man.;

  • 作者单位

    University of Alberta (Canada).;

  • 授予单位 University of Alberta (Canada).;
  • 学科 Engineering Mechanical.
  • 学位 M.Sc.
  • 年度 2007
  • 页码 128 p.
  • 总页数 128
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 老年病学;
  • 关键词

  • 入库时间 2022-08-17 11:40:06

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