含孔层合板孔口缝合补强的数值模拟  

Numerical simulations of the effect of stitching reinforcement on composite laminates with a circular hole

作　　者：韩小平[1] 郭章新[1] 王彬[1] 朱西平[1] 

机构地区：[1]西北工业大学力学与土木建筑学院,西安710072

出　　处：《复合材料学报》2011年第3期148-153,共6页Acta Materiae Compositae Sinica

摘　　要：提出一种缝合线计算模型,通过数值模拟计算和实验结果比较,得到缝合线计算模型中相关的弹性参数。对复合材料开口缝合补强结构进行了有限元模拟计算,分析讨论了孔边及邻近区域应变的分布规律,并计算出应变集中因子。研究了不同缝合参数(针距、行距、边距、缝合线直径、缝合线模量)对孔边应变集中的影响,给出了合理的孔口缝合参数设计方法。A calculation model of stitching yarn was proposed,and the elastic properties parameter of stitching yarn were obtained based on the numerical simulation and the experiment results.The finite element simulating calculation was carried out on the stitching reinforcement for composite laminates containing a circular hole.The strain distribution near the hole edge were investigated analytically.The hole edge coefficients of strain concentration were calculated for different stitching parameters,such as stitching needle distance,row spacing,edge distance,diameter and modulus.A stitching design parameters on the edge of hole are obtained.

关 键 词：含孔层板 缝合补强 缝合线模型 应变集中 缝合参数 

分 类 号：TB330.1[一般工业技术—材料科学与工程]