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Efficient and high fidelity modeling method for battery pack collision with equivalent contact
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Yang NI, Gang LI, Yan ZENG
Chinese Journal of Computational Mechanics | 2025, 42(5) : 737 - 743
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Chinese Journal of Computational Mechanics | 2025, 42(5): 737-743
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Efficient and high fidelity modeling method for battery pack collision with equivalent contact
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Yang NI, Gang LI, Yan ZENG
Affiliations
  • State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, China
Published: 2025-10-28 doi: 10.7511/jslx20240606001
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The power battery pack of an electric vehicle is a complex system, whose efficient and high fidelity modeling is an urgent need for solving collision problems. This paper firstly proposes a hybrid reduced order battery pack model, with fine modeling in the central region and centralized mass in other parts through a simple connection contact. Compared with the refined full model, the maximum stress error is relatively small, and the computational efficiency is improved by about 3.5 times. Then, to consider the effect of the boundary further, a centroid module structural model with equivalent contact is proposed. Compared with the hybrid reduced order model, the collision displacement and the maximum stress of the centroid module structure model are much closer to those of the fine full model. Finally, an impact response analysis is conducted on the centroid module structural model and the fine full model, by comparing the behaviors of the collision center point and the impact object. It is found that both models have the similar trend in the response curves with small errors, which verifies the feasibility of the proposed model.

power battery pack  /  hybrid reduced order simplified model  /  centroid module structural model  /  bottom collision
Yang NI, Gang LI, Yan ZENG. Efficient and high fidelity modeling method for battery pack collision with equivalent contact[J]. Chinese Journal of Computational Mechanics, 2025 , 42 (5) : 737 -743 . DOI: 10.7511/jslx20240606001
Year 2025 volume 42 Issue 5
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Article Info
doi: 10.7511/jslx20240606001
  • Receive Date:2024-06-06
  • Online Date:2026-03-24
  • Published:2025-10-28
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  • Received:2024-06-06
  • Revised:2024-10-08
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    State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, China
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表12种不同金属材料的力学参数

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Number of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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