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首页> 外文期刊>Composites: mechanics, computations, applications >PREDICTION OF THE DYNAMIC BEHAVIOR OF PC AND PMMA-BASED POLYMER PRODUCTS THROUGH CONSTITUTIVE AND FINITE ELEMENT ANALYSIS
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PREDICTION OF THE DYNAMIC BEHAVIOR OF PC AND PMMA-BASED POLYMER PRODUCTS THROUGH CONSTITUTIVE AND FINITE ELEMENT ANALYSIS

机译：通过本构和有限元分析预测PC和PMMA基聚合物产品的动态行为

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摘要

The work attempts at characterizing the mechanical behavior of polymethyl methacrylate (PMMA) and polycarbonate (PC) in static and dynamic loading conditions, which eventually helps one to optimize the design and safety of aerospace structures. Experimental characterization of polymers was carried out through uniaxial compression and split Hopkinson pressure bar (SHPB) dynamic tests. On the basis of experimental findings, a phenomenological constitutive model has been developed to describe the mechanical behavior of polymers under different loading conditions. The material model was implemented in an explicit finite element (FE) solver to ascertain the dynamic behavior of two aerospace structures under high-velocity impact applications. These simulations help one to analyze the structural behavior under different impact scenarios and provide a comprehensive understanding of the impact event.
机译：这项工作试图表征聚甲基丙烯酸甲酯（PMMA）和聚碳酸酯（PC）在静态和动态载荷条件下的机械性能，从而最终帮助人们优化航空航天结构的设计和安全性。聚合物的实验表征是通过单轴压缩和分开的Hopkinson压力棒（SHPB）动态测试进行的。根据实验结果，开发了一种现象学本构模型来描述聚合物在不同负载条件下的力学行为。该材料模型在显式有限元（FE）求解器中实现，以确定在高速撞击应用下两个航空航天结构的动力学行为。这些模拟可帮助人们分析不同冲击场景下的结构行为，并提供对冲击事件的全面理解。

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