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首页> 外文会议>Asia-Pacific Conference on Shock amp; Impact Loads on Structures; 20031112-14; Changsha, Hunan,(CN) >A MODEL FOR DAMAGE-FAILURE PROCESS OF LAMINATED COMPOSITES UNDER LOW VELOCITY IMPACT
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A MODEL FOR DAMAGE-FAILURE PROCESS OF LAMINATED COMPOSITES UNDER LOW VELOCITY IMPACT

机译：低速冲击下层合复合材料损伤破坏过程的模型

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摘要

Three failure modes, matrix cracking, delamination between adjacent layers and fiber fracture, were defined for typical laminated composites. Forming conditions of matrix cracking, delamination and fiber fracture are modeled and presented in this paper. Failure processes of the structural elements of the composite laminate are simulated by node division technique in the model. Stresses on a node are released according to the state of the stresses on delamination when the node is divided into two parts. An example is studied and the results show that the matrix cracking and delamination occur first and reach saturation in a very short time. Although delamination is the most important failure modes, the final failure of the laminate is controlled by fiber fracture.
机译：对于典型的层压复合材料，定义了三种破坏模式，即基体开裂，相邻层之间的分层和纤维断裂。对基质开裂，分层和纤维断裂的形成条件进行了建模，并在本文中进行了介绍。通过节点划分技术对复合材料层合板结构元件的破坏过程进行了仿真。当节点分为两部分时，节点上的应力会根据分层时的应力状态释放。通过算例分析，结果表明，基体开裂和分层首先发生，并在很短的时间内达到饱和。尽管分层是最重要的破坏模式，但层压板的最终破坏是由纤维断裂控制的。

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