Steel-plate composite (SC) panel consists of two steel plates, a core concrete, and various types of mechanical connectors. The SC panel demonstrates the high bearing capacity and energy dissipation capacity against impact loading. This paper put forwards an improved two-degree-of-freedom (TDOF) mass–spring–damper model to evaluate the impact response of the SC panel. The derivations and verifications are discussed and results show that the model gives satisfactory predictions on both failure modes and impact responses, including impact force, projectile displacement, and panel deflection time histories.

中文翻译：

---

TDOF模型，用于评估钢板复合板的整体和局部冲击响应

钢板复合（SC）面板由两块钢板，一种芯混凝土和各种类型的机械连接器组成。SC面板显示出抗冲击载荷的高承载能力和能量耗散能力。本文提出了一种改进的两自由度（TDOF）质量－弹簧－阻尼器模型来评估SC面板的冲击响应。讨论了推导和验证，结果表明该模型对破坏模式和冲击响应（包括冲击力，弹丸位移和面板挠曲时间历史）都给出了令人满意的预测。