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Theoretical and numerical analyses of composite cylinders subjected to the low velocity impact

机译：低速冲击复合圆柱的理论和数值分析

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The main objective of this research is to develop a theoretical solution for predicting the low-velocity impact induced failure in composite cylinders. Observing both in-plane and out-of-plane impact induced failure modes in composite cylinders is demanded of determining all components of the stress and strain fields. Thus, it is necessary to exploit the appropriate theory for this purpose. Layer-wise theory is employed to develop a theoretical solution for extracting stress/strain components in a composite cylinder subjected to low-velocity. Then, proper failure criteria are employed to predict the failure caused by impact. Finally, finite element modeling is performed to analyze the low-velocity impact in composite cylinders. Comparing the results, it is revealed that developed theoretical solution is more accurate than finite element modeling.
机译：这项研究的主要目的是为预测复合材料圆柱体中的低速冲击引起的破坏提供理论解决方案。需要观察复合材料圆柱体内的平面内和平面外冲击引起的破坏模式，以确定应力场和应变场的所有分量。因此，有必要为此目的开发适当的理论。运用分层理论来开发理论解，以提取低速作用下复合圆柱体中的应力/应变分量。然后，采用适当的失效准则来预测由冲击引起的失效。最后，进行有限元建模以分析复合材料圆柱体中的低速冲击。比较结果表明，开发的理论解比有限元建模更准确。

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