【摘要】 复合式夹心外挂墙板在工程实践中有着广泛的应用前景。然而，在使用阶段，墙壁可能经常受到平面外的冲击作用，故研究混凝土夹芯外墙板的冲击性能十分必要。为此开展了复合式夹芯外挂墙板的冲击性能试验和数值模拟，制作了两个具有不同跨度的复合式夹芯外挂墙板试件，开展冲击性能试验，获悉墙板试件的动力响应和破坏机理。随后利用ABAQUS建立了冲击载荷下墙板的有限元模型，同时考虑材料在不同应变速率下的强化效应。通过与试验结果对比，验证了有限元模型的准确性。基于此开展了参数分析，评估了落物高度、落物质量和刚度以及边界条件等6个参数对复合式夹芯外挂墙板冲击性能的影响。在一定范围内，落物高度、重量、刚度与冲击力之间存在一定的正相关，边界条件增强，冲击相应时间缩短。更多还原

【Abstract】 Composite sandwich exterior wall panels have broad application prospects in engineering practice. However, they might often be subjected to accidental impact during their service life, making it essential to investigate their impact performance. This study conducted impact performance tests and numerical simulations on these wall panels. Two specimens with different spans were fabricated and tested under impact loading to investigate the dynamic responses and failure mechanisms. Subsequently, a numerical model considering the strength improvement at various strain rates was established and verified against the test results. Furthermore, a parametric analysis was conducted to evaluate the influence of six parameters, including the drop height, the mass and stiffness of the impactor, and the boundary conditions, on the impact performance of the composite sandwich exterior wall panels. Within a certain range, there is a positive correlation among the drop height, weight, stiffness, and impact force. As the boundary conditions intensify, the impact response time shortens.更多还原