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Die fatigue life design and assessment via CAE simulation

机译:通过CAE仿真进行模具疲劳寿命设计与评估

摘要

In die design process, the design and prediction of die fatigue life is a non-trivial issue. Many factors in die life cycle from design, fabrication to service all affect die life. The die life in cold forging processes is basically determined by die fatigue failure. The design and assessment of die fatigue life needs to consider all the affecting factors including die structure and component design, materials selection and properties configuration, die fabrication and service conditions. Currently, there is no efficient approach to providing complete solutions by considering all of these factors. CAE simulation technology, however, presents a promising approach to addressing the issue. In this paper, a simulation-based approach for die life design and assessment is presented. The approach employs both stress-life and strain-life fatigue analysis methods to conduct the die fatigue life design and analysis based on the stress and strain revealed by CAE simulation. As the die stress and strain in forming process vary dynamically, the integrated simulation of forming process and die deformation is conducted in such a way that the dynamic die stress and strain can be identified and determined. To implement this idea, a realization framework is orchestrated and the processes and procedure under the framework are succinctly articulated. The implementation with case studies is finally used to test and verify the validity, robustness, and efficiency of the developed approach. The approach is proven to be able to provide satisfactory solutions for die life design and assessment in the early stage of die design.
机译:在模具设计过程中,模具疲劳寿命的设计和预测是一个不小的问题。从设计,制造到使用的整个模具生命周期中的许多因素都会影响模具寿命。冷锻过程中的模具寿命基本上取决于模具疲劳失效。模具疲劳寿命的设计和评估需要考虑所有影响因素,包括模具结构和部件设计,材料选择和性能配置,模具制造和使用条件。当前,没有考虑到所有这些因素的有效方法来提供完整的解决方案。但是,CAE仿真技术提出了一种解决该问题的有前途的方法。在本文中,提出了一种基于仿真的模具寿命设计和评估方法。该方法同时采用了应力寿命和应变寿命疲劳分析方法,以基于CAE仿真显示的应力和应变进行模具疲劳寿命的设计和分析。由于成型过程中的模具应力和应变是动态变化的,因此以可以识别和确定动态模具应力和应变的方式进行成型过程和模具变形的集成仿真。为了实现这个想法,精心设计了一个实现框架,并简洁地阐明了该框架下的过程和过程。案例研究的实现最终用于测试和验证所开发方法的有效性,健壮性和效率。实践证明,该方法能够为模具设计的早期阶段的模具寿命设计和评估提供令人满意的解决方案。

著录项

  • 作者

    Fu MW; Yong MS; Muramatsu T;

  • 作者单位
  • 年度 2008
  • 总页数
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类

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