Load Distributions in Bolted Single Lap Joints Under Non-Central Tensile Shear Loading

2021 ◽  
Author(s):  
Chaiwat Sinthusiri ◽  
Sayed Nassar
Keyword(s):  
Shear Loading ◽  
Lap Joints ◽  
Tensile Shear ◽  
Single Lap Joints ◽  
Load Distributions

Load Distributions in Bolted Single Lap Joints Under Non-Central Tensile Shear Loading

2020 ◽  
Author(s):  
Chaiwat Sinthusiri ◽  
Sayed A. Nassar
Keyword(s):  
Beam Theory ◽  
Shear Loading ◽  
Lap Joints ◽  
Tensile Shear ◽  
Single Lap Joints ◽  
Load Distributions ◽  
Bolt Preload ◽  
Proposed Model ◽  
Linear Spring ◽  
Pass Through

Abstract This study uses beam theory-based model to investigate a numerically calibrated bolt load distributions in a preloaded two-bolt single lap joint under non-central tensile shear loading. Linear spring-based modeling is used for the two preloaded bolts and substrates. In practice, due to geometric tolerance may not necessarily pass through the joint centerline causing an additional moment loading. Thus, the sharing load would not be equally distributed between all the bolt in the joint. The effect of various joint parameter, bolt preload and off-center location of the tensile shear loading is investigated and discussed. Proposed model would be useful in enhancing the reliability and safety of bolted joints.

scholarly journals Static and dynamic tensile shear test of glued lap wooden joint with four different types of adhesives

Holzforschung ◽  
2017 ◽  
Vol 71 (5) ◽  
pp. 391-396 ◽  
Author(s):  
Erik V. Bachtiar ◽  
Gaspard Clerc ◽  
Andreas J. Brunner ◽  
Michael Kaliske ◽  
Peter Niemz
Keyword(s):  
Urea Formaldehyde ◽  
Beech Wood ◽  
High Stress ◽  
Fatigue Loading ◽  
Shear Loading ◽  
Lap Joints ◽  
Tensile Shear ◽  
Static Test ◽  
Different Types ◽  
Stress Levels

Abstract Investigations of quasi-static and fatigue failure in glued wooden joints subjected to tensile shear loading are presented. Lap joints of beech wood (Fagus sylvatica L.) connected with four different types of adhesives, i.e. polyurethane (PUR), melamine urea formaldehyde (MUF), bone glue and fish glue, were experimentally tested until the specimens failed. The average shear strengths obtained from the quasi-static test ranged from 12.2 to 13.4 MPa. These results do not indicate any influence of the different adhesive types. The influence of the adhesives is only visible from the results of the fatigue tests, which were carried out under different stress excitation levels between 45% and 75% of the shear strength. Specimens bound with ductile adhesive (PUR) showed a slightly higher number of cycles to failure (Nf) at low-stress levels and lower Nf at high-stress levels in comparison to more brittle adhesives (MUF, fish glue). In general, the performances of animal glues and MUF were similar in both quasi-static and fatigue loading under dry conditions.

Tester for tensile shear evaluation of metal–polymer single lap joints

2018 ◽  
Vol 54 ◽  
pp. 321-326 ◽  
Author(s):  
Shotaro Kadoya ◽  
Fuminobu Kimura ◽  
Yusuke Kajihara
Keyword(s):  
Lap Joints ◽  
Tensile Shear ◽  
Single Lap Joints ◽  
Metal Polymer

Effect of Adhesive Layer’s Voids on Stress Distribution of Adhesively Bonded Joints

2010 ◽  
Vol 139-141 ◽  
pp. 986-989 ◽  
Author(s):  
Hai Long Zhao ◽  
Zong Zhan Gao ◽  
Zhu Feng Yue ◽  
Zhi Feng Jiang
Keyword(s):  
Finite Element ◽  
Stress Concentration ◽  
Stress Distribution ◽  
Adhesive Layer ◽  
Shear Loading ◽  
Lap Joints ◽  
Bonded Joints ◽  
Adhesively Bonded ◽  
Adhesively Bonded Joints ◽  
Single Lap Joints

The stress distribution of adhesively-bonded single lap joints under tensile shear loading is analyzed using 2-dimensional elastic-plastic finite element method (FEM). Special attentions have been put on the influence of void in adhesive on the stress distribution of adhesively-bonded joints. The results show that the stress concentration of the void is less than that of the end part of the joints when adhesive layer’s deformation was in the range of elastic. Moreover, the influence of the void on the stress distribution becomes less when the void moving from the end-part to the middle. The stress concentration becomes larger and the stress distribution of adhesive’s mid-thickness region becomes flatter when adhesive layer has biggish plastic deformation. Finite element results show an agreement with the theoretical results.

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