Behind Armor Blunt Trauma Response of Biological Rib Targets by Falling Weight Impact

ZHOU Zhenlu; AN Shuo; XIONG Manman; MA Xuejiao; DU Qinglei; LU Haitao; ZANG Liwei; QIN Bin

doi:10.7643/issn.1672-9242.2025.07.005

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Equipment Environmental Engineering ›› 2025, Vol. 22 ›› Issue (7) : 36-43. DOI: 10.7643/issn.1672-9242.2025.07.005

Special Topic—Application and Collaborative Evaluation Technology of Light Weapons in Complex Environments

Behind Armor Blunt Trauma Response of Biological Rib Targets by Falling Weight Impact

ZHOU Zhenlu, AN Shuo, XIONG Manman, MA Xuejiao, DU Qinglei, LU Haitao, ZANG Liwei, QIN Bin

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Abstract

The work aims to investigate the characteristics of blunt chest trauma under low-speed impacts and evaluate the injury degree by injury criteria. The characteristics of blunt injury were revealed by investigating the variation characteristics of chest compression (compression ratio). A biological rib target was constructed by combining porcine thorax and ballistic gelatin. With a falling weight as the impact source, a high-speed photography system was combined to explore the impact process. The impact process of the falling weight was similar to that of a bullet and the maximum depth of indentation deformation in soft protection reached 37 mm. An increase in the speed of the falling weight significantly increased the deformation of the chest cavity, with a maximum compression rate of 22.5% when the impact velocity was 5.602 m/s. According to the analysis with the Viscous Criteria (VC), the VC values corresponding to the impact velocity of 3.779 m/s (VC_max=1.724 m/s) and 5.602 m/s (VC_max=2.276 m/s) both corresponded to AIS2 or 3 injuries, with an injury probability of approximately 100%. Low-speed blunt impact studies can be carried out by combining falling weight impact with biological rib targets, whereas there are differences in the corresponding AIS grades when chest compression rate, chest compression and Viscous Criteria are used as the measurement basis.

Key words

behind armor blunt trauma / falling weight impact / rib target / high-speed photography / chest compression rate / viscous criteria

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ZHOU Zhenlu, AN Shuo, XIONG Manman, MA Xuejiao, DU Qinglei, LU Haitao, ZANG Liwei, QIN Bin. Behind Armor Blunt Trauma Response of Biological Rib Targets by Falling Weight Impact[J]. Equipment Environmental Engineering. 2025, 22(7): 36-43 https://doi.org/10.7643/issn.1672-9242.2025.07.005

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