Research on damage effectiveness of prefabricated fragments on human targets in two postures
In order to assess damage effectiveness of prefabricated fragments on human targets accurately,based on A-S criterion,the damage matrix was used to study the damage effectiveness of warhead.The dispersion process of fragments was simulated and the related data was extracted by Matlab.Then,this paper established warhead-human rendezvous model,determined the part of body hit by fragments,calculated the probability of disablement.The ground target area was divided into grids,and human model position for obtaining the disablement probability at each grid was changed.Repeating the above computational process,the probability of disablement at each grid position was obtained,which constitutes the destruction matrix,and the effective destruction area was calculated by the destruction matrix.Different combat drop angles,drop speeds,and blast heights were set,and the destructive effects of prefabricated fragments on 2 human body postures were studied.The results show that:between the fall angle of 0°～80°,when people are in squatting posture,the destruction area is reduced by 6% ～16% ,when the fall angle is greater than 40°,the number of leg and head hit in squatting posture is significantly lower than the standing posture.In the fall speed of 100 m/s to 700 m/s,compared to the standing posture,squatting posture of the destruction area is reduced by 8% -11% ,the number of fragmentation hit is also always lower than the standing posture.In the height of 2 m to 4.6 m,the damage area of the squatting position is reduced by 8% ～20% ,and the number of fragmentation hits is always lower than the standing position.In the battlefield,the combatants use squatting posture can reduce the probability of being hit by fragmentation,reduce the probability of disabling combatants,and reduce the area of destruction.
NETL
NSTL
万方数据
维普
