Page 12 - 《爆炸与冲击》2025年第5期

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θ θ θ
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−20 θ
第 45 卷 王 帅，等： 锯齿外形对弹体带攻角侵彻横向过载的影响 第 5 期

700
600
500
400
F s /kN 300 Smooth, θ=1°
Smooth, θ=2°
200 Smooth, θ=3°
Serrated, θ=1°
100 Serrated, θ=2°
Serrated, θ=3°
0
0 2 4 6 8 10 12 14
Time/ms
(c) Axial contact force for all parts

图 9 不同攻角时两种弹型的锯齿区与非锯齿区轴向接触力的对比
Fig. 9 Comparison of axial contact forces in serrated and non-serrated areas
between smooth and serrated projectiles for different attack angles

示。尽管两种弹型在锯齿区与非锯齿区的横向接触力峰值大小相对关系相反，但将两个区域的横向接
触力合成时，锯齿弹总横向接触力峰值仍然小于光滑弹，且两者接触力波形及脉宽与图 8（d）中的横向加
速度完全一致，如图 10（c）所示。以上分析表明，锯齿弹锯齿区能够降低弹体与靶体的横向接触力的峰
值，这是锯齿弹相比光滑弹具有横向降载能力的根本原因。

100 0
0 −50

−100 −100
F t /kN Smooth, θ=1° F t /kN Smooth, θ=1°
−200
Smooth, θ=2° −150 Smooth, θ=2°
−300 Smooth, θ=3° Smooth, θ=3°
Serrated, θ=1°
Serrated, θ=1°
Serrated, θ=2° −200 Serrated, θ=2°
−400 Serrated, θ=3° Serrated, θ=3°
−250
0 2 4 6 8 10 12 14 0 2 4 6 8 10 12 14
Time/ms Time/ms
(a) Transverse contact force for part AB (b) Transverse contact force for Part others
100
0
−100
F t /kN −200 Smooth, θ=1°
−300 Smooth, θ=2°
Smooth, θ=3°
−400 Serrated, θ=1°
−500 Serrated, θ=2°
Serrated, θ=3°
−600
0 2 4 6 8 10 12 14
Time/ms
(c) Transverse contact force for all parts
图 10 不同攻角时两种弹型锯齿区与非锯齿区横向接触力的对比
Fig. 10 Comparison of transverse contact forces in serrated and non-serrated areas
between smooth and serrated projectiles for different attack angles

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