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Limits of asymptotic solutions in low-velocity impact of composite plates

机译:复合板低速冲击中渐近解的极限

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This paper presents a study of the low velocity impact response of composite plates by using dimensional analysis and lumped-parameter models. Simple analytical expressions are obtained and used to construct a characterization diagram that shows the relationship between the maximum normalized impact force and two non-dimensional parameters. For a given impact event, it is shown that the non-dimensional parameters can be obtained by analytical, computational or experimental methods. Once these parameters are determined, the characterization diagram can be used to estimate the type of response, and maximum impact force. Furthermore, the diagram can be used to select adequate simple models for a given impact situation. It is shown that these simple models provide very good approximations of the impact response for a pre-determined wide range of impact parameters.
机译:本文通过尺寸分析和集总参数模型对复合材料板的低速冲击响应进行了研究。获得了简单的分析表达式,并将其用于构造表征图,该表征图显示了最大归一化冲击力和两个无量纲参数之间的关系。对于给定的冲击事件,表明可以通过分析,计算或实验方法获得无量纲参数。一旦确定了这些参数,就可以使用特性图估算响应的类型和最大冲击力。此外,该图可用于为给定的冲击情况选择适当的简单模型。结果表明,对于预定的各种冲击参数,这些简单的模型可以提供非常好的冲击响应近似值。

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