Validation of Numerical Modeling for the Prediction of Elastic and Failure Behavior of Diamond Powder Filled Woven Composites

复合材料期刊(英文) Pub Date : 2017-04-28 DOI:10.4236/OJCM.2017.72004

M. Srinivasan, P. Maettig, K. Glitza, B. Sanny, A. Schumacher, M. Duhovic

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引用次数: 2

Abstract

A numerical investigation was carried out to examine the role of micro-sized diamond powder filler on the on-axis tensile stiffness properties of the standard modulus T300 and the high modulus YS90A woven fabric composite plates by progressive damage modeling. Finite element modeling (FEM) results for the T300 composite with and without diamond powder predicted a specific case of fiber failure in all the plies showing the characteristics of brittle failure. Static tensile tests were carried out on the YS90A composite coupons containing no diamond powder (DP) and filled with 6% and 12% volume fractions of DP. A higher content of diamond powder in the coupons led to agglomeration. This induced stress concentrations and subsequently reduced the mechanical properties. FEM was carried out considering specimens with and without an induced stress concentration geometry in the YS90A coupons filled with DP. The results of the on-axis tensile tests indicated a delamination type of failure in both cases with additional fiber fracture in the Open Hole Tensile (OHT) coupons.

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金刚石粉填充编织复合材料弹性和破坏性能数值模拟的验证

采用渐进式损伤建模方法，研究了微粒径金刚石粉末填料对标准模量T300和高模量YS90A机织复合材料板轴向拉伸刚度性能的影响。对含和不含金刚石粉的T300复合材料的有限元模拟结果预测了所有层中纤维破坏的具体情况，显示出脆性破坏的特征。对不含金刚石粉(DP)、填充体积分数分别为6%和12%的DP的YS90A复合材料试样进行了静态拉伸试验。粉料中金刚石粉含量的增加导致了团聚。这引起应力集中，随后降低了机械性能。采用有限元法对填充DP的YS90A试样进行了考虑和不考虑诱导应力集中几何形状的有限元分析。轴向拉伸测试结果表明，在两种情况下，裸眼拉伸(OHT)接头中都存在分层破坏，并伴有额外的纤维断裂。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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复合材料期刊(英文)

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