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作者:

Yang, Li (Yang, Li.) | Wang, Liyong (Wang, Liyong.) | Li, Le (Li, Le.) | Zheng, Xinhui (Zheng, Xinhui.) | Chang, Shuyuan (Chang, Shuyuan.)

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摘要:

Due to the significant scale and complex operating conditions of drive shafts, experimental analysis of small crack evolution becomes challenging. This study presents a cross-scale modeling approach to analyze the evolution of small cracks in drive shafts. Firstly, by employing the sub-model method and the variable-node finite element method, two mesoscale models based on crystal plasticity theory are integrated into a macroscale model, constructing a cross-scale analysis model for small crack evolution. Then, by measuring the heterogeneous deformation degree in the mesoscale models, models for surface small crack initiation and propagation, accounting for heterogeneous deformation, are developed. Besides, energy-based models for internal small crack nucleation and propagation are established. To simulate the initiation and propagation of surface small cracks, the study utilizes a mesoscale variable-node shell model incorporating the Crystal Plasticity Finite Element Method (CPFEM), coupled with the Crystal Plastic Coupling Extended Finite Element Method (CP-XFEM). From the simulation results, a cross-section of the mesoscale solid model is extracted to establish a polycrystalline plasticity mesoscale cross-section model. Then, utilizing the element deletion method in ABAQUS, simulations for internal small crack nucleation and propagation are performed. The findings demonstrate that the cross-scale model effectively reflects the irregular propagation rate of microscopic small cracks. The propagation patterns of surface small cracks are generally consistent, with more significant path deviations observed in models exhibiting significant grain orientation differences. In the latter stages of internal small crack propagation, as the number of failed grains rises, stress concentration in the microstructure intensifies, resulting in a significant acceleration phase in crack propagation and a significant decrease in propagation life. © 2024 Elsevier Ltd

关键词:

Crack propagation Elastoplasticity ABAQUS Stress concentration

作者机构:

  • [ 1 ] [Yang, Li]Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology, Beijing, China
  • [ 2 ] [Wang, Liyong]The Ministry of Education Key Laboratory of Modem Measurement and Control Technology, Beijing Information Science &Technology University, Beijing, China
  • [ 3 ] [Li, Le]The Ministry of Education Key Laboratory of Modem Measurement and Control Technology, Beijing Information Science &Technology University, Beijing, China
  • [ 4 ] [Zheng, Xinhui]China Geol Survey, China Aero Geophys Survey & Remote Sensing Ctr, China
  • [ 5 ] [Chang, Shuyuan]Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology, Beijing, China

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来源 :

Engineering Failure Analysis

ISSN: 1350-6307

年份: 2025

卷: 167

4 . 0 0 0

JCR@2022

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SCOPUS被引频次: 1

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