中国舰船研究2016，Vol.11Issue(3)：55-60,6.DOI:10.3969/j.issn.1673-3185.2016.03.010
S2/430LV复合材料拉-剪疲劳材料许用值试验
Experimental study of limits on the tension-shear fatigue of S2/430LV composite materials
摘要
Abstract
Longitudinal transverse shear strength is one of the most important factors in evaluating the in⁃tensity of composite laminates, while S2/430LV is a typical composite material widely used in warships. This paper first investigates the intensity of ±45° ply in respect with longitudinal shear strength by referring to GB/T3355-2005. The results show that under tension-shear loads, the curves of load/displacement of S2/430LV display two stages as well as arc transition region characteristics. The paper then takes the tangen⁃tial point between the linear stages and the arc segment in the primary stage of the curves as the datum point of sheared intensity (symbolized by τB ), calculating the reduction coefficients to investigate ten⁃sion-shear fatigue, left stiffness, and shear strength. It is suggested that 0.75 should be taken as the reduc⁃tion coefficient of longitudinal shear strength for S2/430LV composite material,when allowing for reason⁃able mechanical fatigue. The conclusion has important reference significance for composite materials of warships in terms of reliability design and analysis.关键词
面内纵横剪切强度/复合材料层合板/拉-剪疲劳/折减系数Key words
longitudinal transverse shear strength/composite laminate/tension-shear fatigue/reduction coefficient分类
交通工程引用本文复制引用
陈国涛,邓波,梅志远..S2/430LV复合材料拉-剪疲劳材料许用值试验[J].中国舰船研究,2016,11(3):55-60,6.基金项目
国家自然科学基金面上项目 （）
