This paper discusses the evaluation indices of the thoracic biofidelity of the Chinese anthropomorphic test device(ATD) and proposes a scaling method for the chest mechanical response that considers the effect of biological viscosity. Based on the viscoelastic biological characteristics of the human body, the concept of equivalent viscosity CE is introduced to correct the current elastic scaling method for viscosity. By introducing the viscosity correction factor ξ and the velocity loss factor e, a nonlinear channel scaling expression is established. The average errors of the maximum impact force and maximum compression calculated by this method are 8.77% and 5.55%, respectively, which are 3.84% and 0.37% lower than those of the original method. The simulation results show that this method effectively corrects the impact force.
XiaoS, QieY C, HuangJ, et al. Influence of restraint load on injury biomechanics in frontal impact based on dummy test[J]. Iranian Journal of Science and Technology, Transactions of Mechanical Engineering, 2020, 44(4): 1065-1075.
[2]
MaW J, LiuW D, HuJ W, et al. Toward future ATDs: anthropometric differences between Chinese and the U.S. Adult populations[C]∥The 13th International Conference on Measuring Technology and Mechatronics Automation(ICMTMA), Beihai, China, 2021:737-742.
LiPei-yu. Parametric modeling and injury analysis of occupant thorax under impact conditions concerning variations among populations[D]. Beijing: School of Vehicle and Mobility, Tsinghua University, 2019.
LiuHuan. Research on the influence of Chinese physique dummy sitting on response and injury of upper torso in frontal collision[C]∥Changchun: School of Mechanical and Aerospace Engineering, Jilin University, 2019.
LiHe-jun, YangZhen, ZhouDa-yong, et al. Difference of injury response among Hybrid Ⅲ dummy, GHBMC model and Chinese human body model in frontal crash[J]. China Mechanical Engineering, 2021, 32(15): 1836-1843.
ChenJia-xin. Research on simulation of frontal impact dummy with Chinese physical sign and its application [D]. Changchun: School of Mechanical and Aerospace Engineering, Jilin University, 2021.
[11]
NahumA M, GaddC W, SchneiderD C, et al. Deflection of the human thorax under sternal impact[C]∥SAE Paper, 1970: No.700400.
[12]
KroellC K, SchneiderD C, NahumA M. Impact tolerance and response of the human thorax[C]∥SAE Paper, 1971: No.710851.
[13]
StalnakerR L, McElhaneyJ H, RobertsV L, et al. Human torso response to blunt trauma[M]. Human Impact Response: Measurement and Simulation, Boston, USA, 1973: 181-199.
[14]
EppingerR, MarcusJ, MorganR. Development of dummy and injury index for NHTSA’s thoracic side impact protection research program[C]∥SAE Transactions,1984,93:359-387.
[15]
IrwinA L, MertzH J, ElhagediabA M, et al. Guidelines for assessing the biofidelity of side impact dummies of various sizes and ages[J]. Stapp Car Crash Journal, 2002, 46: 297-319.
[16]
KentR. Frontal thoracic response to dynamic loading: the role of superficial tissues, viscera and the rib cage[J]. International Journal of Crashworthiness, 2008, 13(3): 289-300.
[17]
MertzH J, IrwinA L, MelvinJ W, et al. Size, weight and biomechanical impact response requirements for adult size small female and large male dummies[C]∥SAE Paper, 1989: No.890756.
[18]
IrwinA L, MertzH J. Biomechanical basis for the CRABI and Hybrid Ⅲ child dummies[C]∥SAE Paper, 1997: No.973317.
[19]
MertzH J, JarrettK, MossS, et al. The Hybrid Ⅲ 10-year-old dummy[J]. Stapp Car Crash Journal, 2001, 45: 319-328.
LiuZ X, ZhengH, MaW J. Development of a new human thoracic equivalent model during frontal impact[J]. SAE International Journal of Transportation Safety, 2023,11(3):289-306.
[23]
FosterK. Analysis of a Slanted-rib Model of the Human Thorax[M]∥Human Impact Response: Measurement and Simulation, Boston: Springer, 1972: 165-177.