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首页> 外文期刊>Journal of Applied Polymer Science >Energy absorption in glass-reinforced continuous strand mat composites
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Energy absorption in glass-reinforced continuous strand mat composites

机译：玻璃纤维增​​强连续毡垫复合材料的能量吸收

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摘要

A unique test fixture was developed for determining the energy-absorbing mechanisms in automotive composite material systems. The objective of the test method was to quantify the energy absorption and identify the failure mechanisms associated with the observed frond formation in progressive crush testing of composite tubes by testing less costly composite plates under progressive crush load conditions. Quasi-static progressive crush tests were performed on glass/polyurethane continuous strand mat (CSM) composite plate specimens. The effect of various test parameters on energy absorption was evaluated by varying the following parameters during testing: the loading rate, profile radius, and profile constraint condition. The experimental data in conjunction with the test observations were used to develop analytical models for predicting the crash-worthiness of automotive composite structures. The crushing process and the load-deflection curves were similar to the progressive crushing of tubes. Modification of the basic specimen geometry was required when testing material systems that have low axial stiffness to prevent a global buckling mode. (C) 2003 Wiley Periodicals, Inc. [References: 31]
机译：开发了一种独特的测试夹具，用于确定汽车复合材料系统中的能量吸收机制。该测试方法的目的是通过在渐进的挤压载荷条件下测试成本较低的复合板，从而量化能量吸收并确定与复合管的渐进挤压测试中观察到的叶状体形成相关的破坏机理。在玻璃/聚氨酯连续丝毡（CSM）复合板样品上进行了准静态渐进挤压试验。通过在测试过程中更改以下参数来评估各种测试参数对能量吸收的影响：加载速率，轮廓半径和轮廓约束条件。实验数据与测试观察结果一起用于开发用于预测汽车复合结构的耐撞性的分析模型。破碎过程和载荷-变形曲线类似于管的渐进破碎。在测试具有低轴向刚度以防止整体屈曲模式的材料系统时，需要修改基本试样的几何形状。 （C）2003 Wiley Periodicals，Inc. [参考：31]

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