摘要
实验发现不同树脂基体配方对纤维缠绕复合材料压力容器的水压爆破强度有高达20～35%的影响。本文认为在容器前、后封头上观察到的分层现象是造成这种强度显著波动的主因,并用有限元分析进行了验证。计算结果表明层间剪切应力是引致分层的主要因素,进一步的实验发现基体的层间剪切强度(interlaminar shear strength,简称ILSS)与容器性能之间有很好的相关性。
Experimental results show that the effect of resin properties on the burst strength can be as large as 20-35 percent. Delamination occurring in the head region of the pressure vessel is identified as the main cause leading to the burst strength degradation, with help of the improved FEM analysis. Interlaminar shear stresses are found to be the major cause in prompting the observed delaminations.
Further experiments show that the interrelationship between the interlaminar shear shrength (ILSS) and the pressure vessel properties is existence.
出处
《固体力学学报》
CAS
CSCD
北大核心
1991年第2期102-113,共12页
Chinese Journal of Solid Mechanics
基金
国家自然科学基金
教委基金
关键词
树脂
基体
复合材料
强度
ILSS
interlaminar shear strength (ILSS), fiber-wound pressure vessels, large strain Finite element analysis, resin matrix
