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The dynamic response of laminate composite plate under low-velocity impact

机译:低速冲击下层合板的动力响应

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In this investigation, the fiber-reinforced composite plates, without damage, subject to low velocity impact are studied by the use of finite element analysis (FE). To analyze the response of the plate, a Newmark time integration algorithm is used. In the present work the FE approach based on the modified Hertz contact law and Mindlin's plate theory tacking account of the transverse shear stress is developed. The contact force is calculated in conjunction with the loading and unloading processes. The time history of the impact process such as the acceleration, velocity of impactor and the target fiber-reinforced composite plate deflection due to an impact force acting at the center has been calculated. The effects of various parameters, such as impactor velocity, clamped or simple supported boundary conditions and lamination stacking sequence are examined.
机译:在这项研究中,通过使用有限元分析(FE)对纤维增强的复合板进行了无损伤的低速冲击研究。为了分析板的响应,使用了Newmark时间积分算法。在当前的工作中,开发了基于修正的赫兹接触定律和Mindlin板理论的横向剪切应力的有限元方法。结合加载和卸载过程来计算接触力。计算了冲击过程的时间历史,例如冲击力的加速度,速度以及由于作用在中心的冲击力引起的目标纤维增强复合板的挠度。检查了各种参数的影响,例如冲击器速度,夹紧或简单支撑的边界条件以及叠片堆叠顺序。

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