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首页> 外文会议>American Society for Composites technical conference;American Society for Composites >Simulation of Barely Visible Impact Damage (BVID) and Compression After Impact (CAI) Strength of Carbon Fiber Reinforced Composite Laminates
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Simulation of Barely Visible Impact Damage (BVID) and Compression After Impact (CAI) Strength of Carbon Fiber Reinforced Composite Laminates

机译：碳纤维增强复合材料层压板的几乎可见的冲击损伤（BVID）和冲击后压缩（CAI）强度的模拟

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摘要

This work is focused on development of computational tools to predict the barelyvisible impact damage (BVID) and its effect on the residual strength measuredthrough the compression after impact (CAI). A Finite Element (FE) based approach isused to model each of the 24 layers of the laminate individually and cohesive laws areused to model the delamination between the layers. The model is capable of capturingthe damage due to low velocity impact (LVI) and the BVID predictions are measuredand compared against the experimental results. Residual strength after impact ismodeled using a second step, capturing the progressive failure under compression. Astrong correlation is found between the experimental observations and modelpredictions. Details about the delamination between all the individual layers have beenmonitored and compared against the experimental data. Correlations between theBVID and residual strength are drawn to predict failure trends.
机译：这项工作的重点是计算工具的开发，以勉强预测 可见冲击损伤（BVID）及其对测得的残余强度的影响 通过撞击后压缩（CAI）。基于有限元（FE）的方法是 用于分别对层压板的24个层中的每一个进行建模，并且内聚律 用于模拟层之间的分层。该模型能够捕获 测量低速冲击（LVI）造成的损坏和BVID预测 并与实验结果进行比较。冲击后的残余强度为 使用第二步建模，捕获压缩下的渐进式故障。一种 在实验观察值和模型之间发现强烈的相关性 预测。有关所有各个层之间分层的详细信息 监控并与实验数据进行比较。之间的相关性 绘制BVID和残余强度以预测失效趋势。

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