基于板厚补偿的921A钢与Q345钢靶板在截卵形弹体侵彻下的等效方法

doi:10.3969/j.issn.1000-1093.2021.11.020

摘要/Abstract

摘要： 对于弹体侵彻舰船靶标试验，由于船用特种钢材较为昂贵，试验成本过高，开展普通船用钢材替代船用特种钢材的等效性研究。为确定不同材料靶板之间的等效关系，基于剩余速度相等原则，采用量纲分析及补偿模型的方法，提出基于补偿模型的材料等效工程化设计公式。该公式中等效板厚与原型板厚之比和等效板屈服强度与原型板屈服强度之比要满足幂指数关系，而幂指数系数要通过实验或仿真方法确定。运用有限元分析软件LS-DYNA对截卵形弹体垂直侵彻921A钢和Q345钢均质靶板过程进行数值仿真，结果表明计算结果与实验结果吻合较好，验证了数值仿真方法的正确性。通过对数值仿真计算得到的等效板厚拟合，提出两种材料靶板等效板厚与动态屈服强度之间的经验公式，并验证了补偿模型公式的有效性。为舰船靶标侵彻实验的等效靶设计提供了理论依据和数据参考。

关键词: 舰船靶标, 截卵形弹体, 弹体侵彻, 材料等效, 补偿模型

Abstract: The special shipbuilding steel is expensive and its test cost is high for the test of projectile penetrating into the ship target. Thus the equivalence of replacing shipbuilding steel with ordinary shipbuilding steel is studied to determine the equivalent relationship between different target plates.Based on the equivalent principle of residual velocity，the dimensional analysis method and compensation model are used，and a design formula for material equivalent engineering based on the compensation model is proposed. In the formula, the ratio of equivalent plate thickness to prototype plate thickness and the ratio of equivalent plate yield strength to prototype plate yield strength meet the power exponent relation， and the power exponent coefficient needs to be determined by experiment or simulation. The process of truncated oval projectile vertically penetrating into the 921A steel and Q345 steel target plates was simulated using finite element analysis software LS-DYNA. The result shows that the calculated results are in good agreement with the test results，thus verifying the correctness of the numerical simulation method.The empirical formula for the equivalent plate thickness and the dynamic yield strength of two target plates is presented by fitting the calculated equivalent plate thickness, and the validity of the compensation model formula is verified.

Key words: shiptargetplate, truncatedogiveprojectile, projectilepenetration, materialequivalence, compensationmodel

中图分类号:

TJ012.4

王逸南，张建伟，王治，姚熊亮，杨娜娜. 基于板厚补偿的921A钢与Q345钢靶板在截卵形弹体侵彻下的等效方法[J]. 兵工学报, 2021, 42(11): 2465-2475.

WANG Yinan， ZHANG Jianwei， WANG Zhi， YAO Xiongliang， YANG Nana. Equivalent Method for 921A Steel and Q345 Steel Target Plates Based on Plate Thickness Compensation Model under thePenetration of Truncated-oval Nose Projectile[J]. Acta Armamentarii, 2021, 42(11): 2465-2475.

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