戴文喜, 谢伟, 胡鹏程, 等. 柱状弹高速撞击下高强聚乙烯复合夹芯结构的抗侵彻分析模型研究[J]. 中国舰船研究. DOI: 10.19693/j.issn.1673-3185.03692.
引用本文: 戴文喜, 谢伟, 胡鹏程, 等. 柱状弹高速撞击下高强聚乙烯复合夹芯结构的抗侵彻分析模型研究[J]. 中国舰船研究. DOI: 10.19693/j.issn.1673-3185.03692.
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DAI W X, XIE W, HU P C, et al. Investigation into the anti-penetration analytical model of composite sandwich structures with UHMWPE laminates under high speed impact of cylindrical projectiles[J]. Chinese Journal of Ship Research(in Chinese). DOI: 10.19693/j.issn.1673-3185.03692.
Citation: DAI W X, XIE W, HU P C, et al. Investigation into the anti-penetration analytical model of composite sandwich structures with UHMWPE laminates under high speed impact of cylindrical projectiles[J]. Chinese Journal of Ship Research(in Chinese). DOI: 10.19693/j.issn.1673-3185.03692.
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柱状弹高速撞击下高强聚乙烯复合夹芯结构的抗侵彻分析模型研究

Investigation into the anti-penetration analytical model of composite sandwich structures with UHMWPE laminates under high speed impact of cylindrical projectiles

    摘要
  • 摘要:
    目的 为快速评估高强聚乙烯复合夹芯结构的抗弹性能，建立其抗高速柱状弹侵彻的理论分析模型。
    方法 首先，将夹芯结构的抗柱状弹侵彻过程分为3个阶段，分析各阶段的能量耗散问题，提出忽略柱状弹镦粗和考虑柱状弹镦粗影响的理论分析模型，进而建立各阶段的消耗能量与剩余速度之间的关系式；然后，采用有限元软件ANSYS/AUTODYN建立高强聚乙烯复合夹芯结构的抗柱状弹侵彻数值模型，通过计算弹体的剩余速度，从而拟合得到弹道极限数值；最后，将理论分析模型与数值模型的计算结果进行对比验证。
    结果 以数值模型结果为基准，忽略弹体镦粗、考虑弹体镦粗的理论分析模型预报值的弹道极限误差均小于22%；综合考虑误差最大值、平均值和相关系数，考虑弹体墩粗的理论分析模型的弹道极限计算精度更高。
    结论 该理论分析模型能够较好地计算高强聚乙烯复合夹芯结构抗柱状弹侵彻的弹道极限，可为其他纤维复合夹芯结构的抗侵彻计算提供参考。

     

    Abstract:
    Objectives In order to quickly evaluate the ballistic performance of UHMWPE composite sandwich structures, a theoretical analysis model of its resistance to high-speed cylindrical projectile penetration was established.
    Methods Firstly, the penetration resistance process of the sandwich structrue was divided into 3 stages, the energy dissipation problem in each stage was analyzed, and a theoretical analysis model was proposed which ignores the upsetting of the cylindrical projectile and considers the upsetting of the cylindrical projectile, the equations between dissipative energy and residual velocities of each stage were built. Then, the numerical model of resistance to cylindrical projectile of UHMWPE composite sandwich structure was established by using the finite element software ANSYS/AUTODYN, the ballistic limits were obtained by calculating the residual velocities of projectiles and using the fitting method. Finally, the results of theoretical analysis model and numerical model were compared.
    Results Based on the results of numerical model, the ballistic limit errors of both theoretical analysis models that neglect and consider the upsetting of projectiles are less than 22%. The ballistic limit of theoretical analysis model taking projectile upsetting into account has higher calculation precision when the maximum errors, mean errors and correlation coefficients are considered together.
    Conclusions The theoretical analysis model can be well applied to calculate ballistic limits of UHMWPE composite sandwich structures against the cylindrical projectiles impact and provide a reference for the penetration resistance calculation of other fibre composite sandwich structure.

     

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