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高速动能破片和包覆活性材料破片串联战斗部兼具高速侵彻毁伤效应及化学能毁伤效应，为研究其对屏蔽装药的串联冲击毁伤行为，建立了高速动能破片和包覆活性材料撞击屏蔽装药的冲击动力学模型，结合活性材料激发理论以及屏蔽装药起爆判据计算分析了高速动能破片和包覆活性材料对屏蔽装药的冲击毁伤行为。基于2D‑Autodyn平台对高速动能破片和包覆活性材料冲击屏蔽装药过程进行了数值模拟。对比验证了理论计算和数值模拟的一致性，结合理论分析和数值模拟结果讨论了影响屏蔽装药毁伤的主要因素、可能存在的毁伤模式和各毁伤模式之间的转变条件。结果表明：高速动能破片和包覆活性材料对屏蔽装药作用主要存在前段侵彻冲击引爆模式（Ⅰ）、主体段侵彻冲击引爆模式（Ⅱ）、活性材料未反应且侵彻未引爆模式（Ⅲ）、活性材料反应增强引爆模式（Ⅳ）及活性材料反应未引爆模式（Ⅴ）等五种毁伤模式；在材料和结构一定的情况下，撞击速度和屏蔽厚度是影响毁伤模式的主要因素；所建立的理论模型可较好地预测上述毁伤模式。“,”The tandem warhead with high‑speed kinetic fragment and coated reactive material has both high‑speed penetration and chemical energy damage effect. This paper is aimed to research its tandem damage effect on shielded charges. The impact dynamics model of impacting on shielded charges by the high‑speed kinetic fragment and coated reactive material was established. By combining the excitation theory of reactive materials with the initiation criterion of shielded charges， the impact damage to the shielded charges by the high‑speed kinetic fragment and coated reactive material was calculated and analyzed. Based on the 2D‑Autodyn platform， the initiation process of shielded charges impacted by the high‑speed kinetic fragment and coated reactive material was simulated. The comparison verifies the consistency between theoretical calculation and numerical simulation. By Combining theoretical analysis and numerical simulation results， the main influencing factors of the damage to shielded charges， the probable damage modes and the transition conditions between each damage mode were discussed. The results show that there are five damage modes for the shielded charges impacted by the high‑speed kinetic fragment and coated reactive material ， including the forepart penetration initiation mode （Ⅰ）， the main part penetration initiation mode （Ⅱ）， the no reactive material reaction and no penetration initiation mode （III）， the reactive material reaction enhanced initiation mode （Ⅳ） and the reactive material reaction and no initiation mode （Ⅴ）. When the structure and material properties are determined， the main influencing factors of damage modes are the impact speed and shielding thickness. The theoretical model established in this paper can predict the above damage modes well.