LUO Ming, ZHOU Yunbo, ZHANG Jincheng, ZHANG Ming, SU Yifei, SUN Xiaowang. Research on time interval of explosion impact on pelvis and lumbar spine injury[J]. Explosion And Shock Waves, 2021, 41(1): 015902. doi: 10.11883/bzycj-2020-0059
Citation:
LUO Ming, ZHOU Yunbo, ZHANG Jincheng, ZHANG Ming, SU Yifei, SUN Xiaowang. Research on time interval of explosion impact on pelvis and lumbar spine injury[J]. Explosion And Shock Waves, 2021, 41(1): 015902. doi: 10.11883/bzycj-2020-0059
LUO Ming, ZHOU Yunbo, ZHANG Jincheng, ZHANG Ming, SU Yifei, SUN Xiaowang. Research on time interval of explosion impact on pelvis and lumbar spine injury[J]. Explosion And Shock Waves, 2021, 41(1): 015902. doi: 10.11883/bzycj-2020-0059
Citation:
LUO Ming, ZHOU Yunbo, ZHANG Jincheng, ZHANG Ming, SU Yifei, SUN Xiaowang. Research on time interval of explosion impact on pelvis and lumbar spine injury[J]. Explosion And Shock Waves, 2021, 41(1): 015902. doi: 10.11883/bzycj-2020-0059
In order to research the influence of the time interval between the vertical impact of the lower legs of passenger and seat on the pelvis and lumbar injuries under explosive impact environment, Hyperworks and LS-DYNA were used to model and simulation analysis, and the research was carried out in combination with the lower legs impact test and the seat drop test. The results show that the positive and negative peaks are generated by the pelvic acceleration, dynamic response index and the z-direction force of the lumbar spine when the passenger’s lower legs and seat mounting points are impacted separately, but the positive and negative peaks do not weaken when the impact time interval is controlled. When the lower legs and seat mounting points are impacted at different time, injuries to the pelvis and lumbar spine of the passenger will be aggravated, and the damage degree of the lower legs impacted preferentially is more serious than that when the seat mounting points are impacted first.
XIONG P Y, ZHOU Y B, HU W H, et al. Analysis of performance of vehicle anti-shock seat and parameters of energy absorber [J]. Science Technology and Engineering, 2019, 19(27): 374–379.
[3]
GEORGE S L. Design and characterization of a shock and vibration mitigation seat system [D]. Las Vegas: Bachelor of Science Engineering University of Nevada, 2006: 1−7.
[4]
ALA T, GAURAV N. Reduction of acceleration induced injuries from mine blasts under infantry vehicles [C] // Proceeding 6th European LS-DYNA Users’ Conference. Gothenburg, Sweden, 2007.
[5]
KUMAR K, JAISSANKAR R, RAVI T. Assessment of the accuracy of certain reduced order models used in the prediction of passenger injury during under-body blast events [J]. SAE International Journal of Transportation Safety, 2014, 2(2): 307–319. DOI: 10.4271/2014-01-0752.
LU H B, ZHOU Z S, YAN D J, et al. Development on shocking table for blast explosions [J]. Explosion and Shock Waves, 2005, 25(3): 276–280. DOI: 10.11883/1001-1455(2005)03-0276-05.
[7]
CHENG M, DIONNE J P, MAKRIS A. On drop-tower test methodology for blast mitigation seat evaluation [J]. International Journal of Impact Engineering, 2010, 37(12): 1180–1187. DOI: 10.1016/j.ijimpeng.2010.08.002.
KEN-AN L. Simulation of various LSTC dummy models to correlate drop test results [C] // 13th International LS-DYNA Users Conference. Michigan, USA, 2013: 1−12.
[10]
NATO. Procedures for evaluating the protection level of logistic and light armored vehicles: AEP-55, Vol 2, mine threat [R]. Brussels: Allied Engineering Publication, 2011.
[11]
STECH E L, PAYNE P R. Dynamic models of the human body [J]. Journal of Sound and Vibration, 1969, 29(4): 523–524.
[12]
KUMAR B K, JAISANKAR R, RAVI T. Evaluating the effectiveness of various blast loading descriptors as passenger injury predictors for underbody blast events [C] // NDIA/GVSETS Conference. USA: NDIA, 2013: 1−29.
[13]
KELLY B, KATRINA H, JOSEPH M. Blast mitigation seat analysis-drop tower data review [C] // International Design Engineering Technical Conferences & Computers and Information in Engineering Conference. New York, 2014: 1−9.
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