The ceramic/fibre composite ballistic panels are widely used in personal protection equipment,and the performance of the ballistic plate under multiple impact loadings are important to keep soldiers safe.The numeri-cal simulation was used to analyze the failure distribution and residual ballistic performance of ballistic panels subjected to multiple impacting,and specifically focusing on the operating condition of 53-type 7.62 mm armor-piercing bullet impacting SiC/ultra-high molecular weight polyethylene(UHMWPE)ballistic panels.The damage of the ballistic plate was characterized by the ceramic failure,fiber deformation and bond surface stripping,and the residual properties of the bulletproof plate with different damage were established.The results show that the damage radius(R)of ballistic panels is 30 mm under the first impact,and the damage(D)is greater than 0.6 when R<15 mm,and the target can't resist the second bullet impacting.Under two impacts,the damage in the middle zone becomes seriously when the distance between two bullets(ΔL)is less than 50 mm,and the cumulative effect of damage is not significant when ΔL>50 mm.Ballistic panels are discretized with 5 mm×5 mm grid,and the propor-tions of different damage areas are obtained.The penetration probability of the integral ballistic plate is 0.94%under the two impacts'loadings.The penetration probability of the integral ballistic plate under the third impact-ing is decided by the striking distance of the first two impacts,and the penetration probability by the third impact-ing is 1.94%when ΔL=20 mm.
ceramic composite armorfailure characteristicsfinite element analysisimpact pointmulti-hit
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