Damage evolution of vehicle motor rotor under single working condition based on GTN model

• Autorzy: He Liange , Yuan Zhou , Shi Wenjun , Qu Xiang

Identyfikatory

DOI

10.15632/jtam-pl/152742

• Języki publikacji: EN

Abstrakty

EN

To study evolution of the void in the material of a motor rotor under different working conditions from a mesoscopic perspective, damage analysis of the rotor has been carried out based on thermal-mechanical coupling theory. According to the test methods of GB/T 228.1-2010 Part 1 and GB/T 228.2-2015 Part 2, tensile tests were conducted on rotor ma- terials at different temperatures to obtain basic mechanical property parameters, and pa- rameters of the fine-scale damage model at different temperatures were fitted by combining orthogonal tests and a finite element inverse calibration method. Then, the accurate tem- perature distribution law of the motor rotor was obtained through CFD calculation. Based on the material parameters and temperature data, the void evolution of the rotor material under thermal-mechanical load was studied by using the finite element method. The results show that: under the rated conditions, the stress concentration of the rotor is mainly ap- peared in the joint with the shaft, the maximum stress was 304.1MPa, which did not reach the yield limit of the material. No plastic deformation occurred, so the volume fraction of voids inside the rotor material did not change still for the initial pore volume fraction of 2.5 · 10−3. In the peak condition, the stress concentration appeared in the rotor plate across the joint of the magnetic bridge and pole shoe with a maximum stress of 354.4MPa and a small plastic strain of 1.133 ·10−3. The pore volume fraction increased to 2.503 ·10−3, where the initial pore growth of 2.150 · 10−6 and the secondary pore nucleation of 2.079 · 10−12.

Słowa kluczowe

EN

motor rotor; GTN model; parameters fitting; void evolution

• Wydawca: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Journal of Theoretical and Applied Mechanics
• Rocznik: 2022
• Tom: Vol. 60 nr 4
• Strony: 561--577
• Opis fizyczny: Bibliogr. 29 poz., rys., tab.

Twórcy

autor

He Liange

• Key Laboratory of Advanced Manufacturing Technology for Automobile Parts, Chongqing University of Technology, Ministry of Education, Chongqing, China
• Key Laboratory of Modern Measurement and Control Technology, Ministry of Education, Beijing Information Science and Technology University, Beijing, China
• Chongqing Tsingshan Industrial Co., Ltd., Chongqing

autor

Yuan Zhou

• Key Laboratory of Advanced Manufacturing Technology for Automobile Parts, Chongqing University of Technology, Ministry of Education, Chongqing, China

autor

Shi Wenjun

• Key Laboratory of Advanced Manufacturing Technology for Automobile Parts, Chongqing University of Technology, Ministry of Education, Chongqing, China

autor

Qu Xiang

• Key Laboratory of Advanced Manufacturing Technology for Automobile Parts, Chongqing University of Technology, Ministry of Education, Chongqing, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).