Failure analysis of fiberglass-vinyl ester composite cylinders subjected to fire and asymmetric transient pressure,Polymer Composites

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Failure analysis of fiberglass-vinyl ester composite cylinders subjected to fire and asymmetric transient pressure
Polymer Composites ( IF 4.8 ) Pub Date : 2021-08-11 , DOI: 10.1002/pc.26251
Ehsan Selahi ₁ , Ali Reza Setoodeh ₂ , Masoud Tahani ₃

Affiliation

A hybrid numerical method is developed for failure prediction of glass fiber reinforced vinyl ester (GRV) composite cylinders subjected to fire and asymmetric transient pressure. The method is composed of layerwise theory, differential quadrature method, Fourier series expansion, and Newmark's time integration method. To achieve high-accuracy solution, the char formation, resin decomposition, volatile convection, and temperature-dependent material properties are considered. By comparing the developed results with the experimental and numerical results presented in the available literatures, the precision of this method is confirmed. The results reveal that although the polymeric composites are flammable, they are also strong thermal insulators compared to conventional metals, which reduces the flame spread rate from one section to another.

中文翻译：

玻璃纤维-乙烯基酯复合气瓶在火灾和非对称瞬态压力作用下的失效分析

开发了一种混合数值方法，用于预测受到火灾和非对称瞬态压力的玻璃纤维增强乙烯基酯 (GRV) 复合材料圆柱体的失效。该方法由分层理论、微分正交法、傅立叶级数展开法和纽马克时间积分法组成。为了获得高精度溶液，需要考虑炭形成、树脂分解、挥发性对流和与温度相关的材料特性。通过将开发的结果与现有文献中给出的实验和数值结果进行比较，证实了该方法的精度。结果表明，虽然聚合物复合材料是易燃的，但与传统金属相比，它们也是强热绝缘体，这降低了从一个部分到另一部分的火焰蔓延速度。

更新日期：2021-10-08

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