Table of Content

Open Access iconOpen Access

ARTICLE

crossmark

Probabilistic Life Calculation Method of NdFeB Based on Brittle Fatigue Damage Model

Lei Li, Guolai Yang*, Jiahao Li

School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China

* Corresponding Author: Guolai Yang. Email: email

Computer Modeling in Engineering & Sciences 2020, 124(3), 865-884. https://doi.org/10.32604/cmes.2020.010720

Abstract

This paper proposes a probabilistic life calculation method of NdFeB based on brittle fatigue damage model. Firstly, Zhu-Wang-Tang (ZWT) constitutive model considering strain rate is established, and based on this, a numerical co-simulation model for NdFeB life calculation is constructed. The life distribution diagram of NdFeB under different stress levels is obtained after simulation. Secondly, a new model of brittle fatigue damage based on brittle damage mechanism is proposed. Then the parameters in the model are identified according to the life distribution diagram of NdFeB and the parameter distribution of the damage evolution model when applied to NdFeB is obtained. Finally, the probability density evolution equation of NdFeB life calculation is established and solved using the probability density evolution method. Probability density function (PDF) of NdFeB life under different stress levels is obtained and provides theoretical basis for the reliability of NdFeB in engineering applications.

Keywords


Cite This Article

APA Style
Li, L., Yang, G., Li, J. (2020). Probabilistic life calculation method of ndfeb based on brittle fatigue damage model. Computer Modeling in Engineering & Sciences, 124(3), 865-884. https://doi.org/10.32604/cmes.2020.010720
Vancouver Style
Li L, Yang G, Li J. Probabilistic life calculation method of ndfeb based on brittle fatigue damage model. Comput Model Eng Sci. 2020;124(3):865-884 https://doi.org/10.32604/cmes.2020.010720
IEEE Style
L. Li, G. Yang, and J. Li "Probabilistic Life Calculation Method of NdFeB Based on Brittle Fatigue Damage Model," Comput. Model. Eng. Sci., vol. 124, no. 3, pp. 865-884. 2020. https://doi.org/10.32604/cmes.2020.010720

Citations




cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
  • 2772

    View

  • 2085

    Download

  • 0

    Like

Share Link