• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >Low cycle fatigue behaviour of ductile aluminium alloys using the inelastic energy approach
【24h】

Low cycle fatigue behaviour of ductile aluminium alloys using the inelastic energy approach

机译：使用非弹性能量方法的延性铝合金的低循环疲劳行为

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 study presents the experimental and computational investigation of the low cycle fatigue behaviour of the ductile aluminium alloy AA 5083-H111 using the inelastic energy approach. The proposed computational model consists of a damage initiation and damage evolution period considering a complete history of the cyclic stress-strain response previously determined using LCF-tests. In computational modelling, the nonlinear isotropic/ki-nematic hardening is considered using the Chaboche constitutive equations, while the direct cyclic algorithm implemented in the Abaqus/Standard software is used to obtain the stabilised response of a specimen subjected to the cyclic loading. In order to examine the damage evolution paths, finite elements with severe damage are detected, and then removed from the finite element model in the subsequent numerical simulations. The proposed material model was validated by the comparison of the computationally and experimentally determined history of hysteresis loops and complete damage behaviour considering both damage initiation and the damage evolution period. Although the proposed approach has been validated for the aluminium alloy AA 5083-H111 with the characterised microstructure, it may also be used to simulate the fatigue behaviour of others ductile Al-alloys where the microstructure may be different. In such cases, a new LCF-test should be necessary to obtain the appropriate cyclic stress-strain responses.
机译：本研究介绍了使用非弹性能量方法的延性铝合金AA 5083-H111的低循环疲劳行为的实验和计算研究。所提出的计算模型包括考虑使用LCF检验先前确定的循环应力 - 应变响应的完整历史的损伤启动和损伤演化时间。在计算建模中，使用Chaboche组成型方程考虑非线性各向同性/ ki-向列硬化，而在ABAQUS /标准软件中实现的直接循环算法用于获得对循环载荷进行的样本的稳定响应。为了检查损伤的进化路径，检测具有严重损坏的有限元素，然后在随后的数值模拟中从有限元模型中取出。通过比较计算和实验确定的滞后环历史和考虑损伤启动和损伤演化期的完全损坏行为来验证所提出的材料模型。尽管已经用特征的微观结构验证了所提出的方法，但是已经用特征的微观结构验证，但也可用于模拟其它延性Al合金的疲劳行为，其中微观结构可以不同。在这种情况下，应该需要新的LCF测试以获得适当的循环应力 - 应变响应。

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