Effect of Adhesive Thickness on the Interface of Singular Stress at the Adhesive Dissimilar Joint
Effect of Adhesive Thickness on the Interface of Singular Stress at the Adhesive Dissimilar Joint
复制标题
胶粘剂厚度对胶粘异种接头界面奇异应力的影响
DOI：
10.1299/kikaia.77.360
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
X. Lan
中科院分区：
文献类型：
--
作者：
Y. Zhang;N. Noda;Ken;X. Lan
摘要：本文研究了胶粘剂异种接头处的奇异应力场，讨论了材料组合和胶粘剂厚度对胶粘剂带材受拉时奇异应力场强度的影响。本文提出了一种计算粘接异种接头奇异应力强度的实用方法，重点讨论了用有限元法计算粘接异种接头的边缘应力。在胶粘剂和粘附剂的任意材料组合下，奇异应力强度以不同胶粘剂厚度t的图表表示，发现奇异应力强度随着胶粘剂厚度t的增加而增加，直到t W =，此时W为胶粘剂宽度。当/ 0.001 t W =和/ 0.1 t W =时，用Dunders参数α、β表示任意材料组合下的奇异应力强度，发现在一定的β值下，当α较小时，奇异应力强度随α的增大而增大，当α较大时，奇异应力强度随α的增大而减小。
Abstract This paper deals with the singular stress field at the adhesive dissimilar joint, and discusses the effect of material combination and adhesive thickness on the intensity of the singular stress when bonded strip is subjected to tension. A useful method to calculate the intensity of singular stress at the adhesive dissimilar joint is presented with focusing on the stresses at the edge calculated by finite element method. The intensities of singular stress are indicated in charts with varying adhesive thickness t under arbitrary material combinations for adhesive and adherents, and it is found that the intensity of singular stress increases with increasing the adhesive thickness t until t W = , when W is the width of adhesive. The intensity of singular stresses are also charted under arbitrary material combinations which are presented by Dunders’ parametersα , β when / 0.001 t W = and / 0.1 t W = , and it is found that for a fixed value β the intensity of singular stress increases with increasing α when α is small while it decreases with increasing α when α is large.