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Inverse Calculation of Muscle Material Parameters for the Pedestrian Legform Impactor
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Shihai CUI1, Yu YANG1, Xiaoxiao YAN2, Haiyan LI1, Lijuan HE1, Wenle LYU1
Chinese Journal of Automotive Engineering | 2024, 14(3) : 463 - 469
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Chinese Journal of Automotive Engineering | 2024, 14(3): 463-469
• Injury Biomechanics and Test/Evaluation •
Inverse Calculation of Muscle Material Parameters for the Pedestrian Legform Impactor
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Shihai CUI1, Yu YANG1, Xiaoxiao YAN2, Haiyan LI1, Lijuan HE1, Wenle LYU1
Affiliations
  • 1 Tianjin University of Science & Technology Tianjin 300222 China
  • 2 China Automotive Technology and Research Center Co., Ltd. Tianjin 300300 China
doi: 10.3969/j.issn.2095–1469.2024.03.13
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The biological fidelity of the advanced Pedestrian Legform Impactor(aPLI) in crash testing largely depends on its geometric structure and the hyperelastic mechanical properties of synthetic rubber used to simulate leg muscle. Based on the quasistatic uniaxial compression test data of rubber, both Ogden and Mooney Rivlin constitutive models are fitted to characterize the hyperelastic behavior of rubber. Following this, the material parameters are obtained and fitting curves are compared with the experimental curves to assess the accuracy of different constitutive models. The results show that the outcomes of the secondorder Ogden model better match the experimental data. To increase the accuracy of muscle rubber material parameters in the finite element model, a compression test finite element model is reconstructed. Taking the material parameters of the fitted secondorder Ogden constitutive model as the initial values, an optimization of the material parameters, μ₁, α₁, μ2 and a₂ in the model is performed using the adaptive response surface method combined with finite element analysis and optimization strategies. This yields a set of optimal material parameters for the material under quasistatic compression.

pedestrian protection  /  muscle of pedestrian legform impactor  /  constitutive models  /  adaptive response surface method  /  parameter inversion
Shihai CUI, Yu YANG, Xiaoxiao YAN, Haiyan LI, Lijuan HE, Wenle LYU. Inverse Calculation of Muscle Material Parameters for the Pedestrian Legform Impactor[J]. Chinese Journal of Automotive Engineering, 2024 , 14 (3) : 463 -469 . DOI: 10.3969/j.issn.2095–1469.2024.03.13
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doi: 10.3969/j.issn.2095–1469.2024.03.13
  • Receive Date：2023-02-17
  • Online Date：2025-07-21
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  • Received：2023-02-17
  • Revised：2023-04-05
Affiliations
    1 Tianjin University of Science & Technology Tianjin 300222 China
    2 China Automotive Technology and Research Center Co., Ltd. Tianjin 300300 China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
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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