Possibilities of the Additional Damping of Unidirectional Fiber Composites by Implementation of Viscoelastic Neoprene and Rubber Layers
Possibilities of the Additional Damping of Unidirectional Fiber Composites by Implementation of Viscoelastic Neoprene and Rubber Layers
复制标题
通过粘弹性氯丁橡胶和橡胶层实现单向纤维复合材料附加阻尼的可能性
DOI：
10.1155/2017/4163485
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发表时间：
2017
影响因子：
1.6
通讯作者：
M. Syrovátková
中科院分区：
文献类型：
--
作者：
P. Kulhavý;Michal Petrů;M. Syrovátková
本工作的目的是评估模态，传输和阻尼特性的分层碳板。基础是进行有限元模型验证的实验分析，评估测试复合材料的振动传递，并描述通过实施粘弹性层的附加阻尼的可能性。被称为预浸料的预浸渍碳纤维用于产生由四个（2个恒定层和2个可变层）层组成的样品。任务是评估改变纤维取向对传递函数和个体模态特性的影响。作为另一种选择，还包括对一些附加阻尼材料的测试。当氯丁橡胶层也插入层间时，氯丁橡胶和薄橡胶涂层被添加作为外部阻尼元件。铺层方向对传递函数形状的预期依赖性，甚至一些MOD特征（弯曲、扭转及其组合）的交换也已被发现。使用附加阻尼材料也是可能的，但最重要的是各个铺层布局和堆叠顺序的正确组合。结果表明，所建立的层合壳有限元模型能够较好地描述层合壳的受力性能。
The aim of the presented work is to assess modal, transmission, and damping characteristics of layered carbon plates. The base is to carry experimental analysis verified by FEM model, which evaluates the vibration transfer of tested composites and describes possibilities of additional damping by implementation of viscoelastic layers. Preimpregnated carbon fibers known as prepreg were used for creation of the samples composed of four (2 constant and 2 variable) layers. The task was to assess impact of changing the fiber orientation on the transfer function and individual modal characteristics. As another option, testing of some additional damping materials was included. Neoprene and thin rubber coat were added as an outside damping element when the neoprene ply was inserted also among the layers. Expected dependence of the plies orientation onto the shape of the transfer function and even swapping of some of MOD characters (bending, torsion, and their combinations) have been found. The use of the additional damping materials is also possible but the right combination of the individual plies layout and stacking sequence is the most significant part. The results had been statistically analyzed and showed that the created layered shell FE models could be used to describe the behavior.