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Acta Armamentarii ›› 2021, Vol. 42 ›› Issue (12): 2555-2564.doi: 10.3969/j.issn.1000-1093.2021.12.003

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Design and Optimization of Occupant Lower Limb Protection Device against Explosion Shock below Military Vehicle

SUN Xiaowang, ZHANG Jincheng, PENG Bing, ZHANG Jinkun, WANG Xianhui   

  1. (School of Mechanical Engineering, Nanjing University of Science and Technology,Nanjing 210094,Jiangsu, China)
  • Online:2022-01-15

Abstract: For severe damage to the lower limbs of vehicle occupant caused by the explosion shock below vehicle,a vehicle occupant lower limb protection device was designed by combining the flexible floor and the explosion-proof foot pad. The protective performance of the lower limb protection device and the influence of design parameters on the protective performance are studied based on vehicle explosive simulation,and a preferable design is determined. Static stiffness analysis of the preferable design is made to determine if it can provide sufficient support in daily use. Multi-objective optimization is performed for the structure of lower limb protection device to obtain the optimal design. The vehicle explosion simulation and test were carried out to verify this design. The results show that the occupant lower limb protection device can effectively reduce the impact to the lower limbs and significantly improve the protection ability of the lower limbs.

Key words: militaryvehicle, underbobyexplosion, vehicleoccupant, lowerlimbprotectiondevice, numericalsimulation, multi-objectiveoptimization

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