Effect of Restraint Condition on the Thermal Stress in the Bonded Single Lap Joint

2011 ◽  
Vol 230-232 ◽  
pp. 1345-1349 ◽  
Author(s):  
Cun Jun Chen ◽  
Min You ◽  
Hai Zhou Yu ◽  
Jian Li Li ◽  
Chun Zhi Mei
Keyword(s):  
Finite Element Method ◽  
Thermal Stress ◽  
Thermal Shock ◽  
Thermal Stresses ◽  
Longitudinal Stress ◽  
Lap Joint ◽  
Adhesively Bonded ◽  
Single Lap Joint ◽  
Peel Stress ◽  
Peak Value

The temperature field in the adhesively bonded single lap steel joint after a thermal shock (100 °C, 10s) and the influence of the restraint on the thermal stress in the joint was investigated using elasto-plastic finite element method (FEM). The results showed that the temperature in the overlap region is symmetrically distributed to the bondline after the thermal shock. Five kinds of constraints were applied in the study and it is found that the peak value of the thermal stresses were occurred at the points near the free ends of the adherend lap zone along the mid-bondline under the action of constraining the adherends in the direction of both transversal and longitudinal. The symbol of the longitudinal stress Sx and peel stress Sy is negative.

Effect of Shock Time on the Thermal Stress in the Single Lap Joint

2012 ◽  
Vol 511 ◽  
pp. 159-162
Author(s):  
Min You ◽  
Chun Zhi Mei ◽  
Cun Jun Chen ◽  
Jian Li Li ◽  
Mei Li
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Thermal Stress ◽  
Thermal Shock ◽  
Lap Joint ◽  
Adhesively Bonded ◽  
Steel Joint ◽  
Single Lap Joint ◽  
Element Method ◽  
Overlap Region

The effect of the thermal shock time on the thermal stress distributed in the adhesively bonded steel single lap steel joint under a 100 C thermal shock was investigated using elasto-plastic finite element method (FEM). The results showed that the temperature is symmetrically distributed to the bondline in the overlap region and the lowest one at the mid-bondline increases as the time of the thermal shock elongated (4 s to 40 s). And all the peak values of the stresses at the mid-bondline and the zone of negative Sx in adherend decreased as the time of the thermal shock elongated.

Effect of Temperature on the Thermal Stress in the Single Lap Joint

2012 ◽  
Vol 166-169 ◽  
pp. 2896-2899
Author(s):  
Min You ◽  
Cun Jun Chen ◽  
Hai Zhou Yu ◽  
Chun Zhi Mei ◽  
Mei Li
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Thermal Stress ◽  
Thermal Shock ◽  
Effect Of Temperature ◽  
Lap Joint ◽  
Adhesively Bonded ◽  
Steel Joint ◽  
Single Lap Joint ◽  
Shock Temperature

The effect of the thermal shock temperature on the thermal stress distributed in the adhesively bonded steel single lap steel joint under a 10 s thermal shock was investigated using elasto-plastic finite element method (FEM). The results showed that both the highest temperature at the surface and the lowest one at the mid-bondline increases as the temperature of the thermal shock raised (80 C to 140 C) and all the peak values of the stresses at the mid-bondline and the zone of negative Sx in adherend increased as the temperature of the thermal shock elevated.

The Effect of Fillet Geometry on Stress in Weld-Bonded Joints

2010 ◽  
Vol 97-101 ◽  
pp. 767-770 ◽  
Author(s):  
Jia Ling Yan ◽  
Min You ◽  
Xiao Ling Zheng ◽  
Ding Feng Zhu ◽  
Mei Rong Zhao
Keyword(s):  
Finite Element Method ◽  
Stress Distribution ◽  
Adhesive Layer ◽  
Bonded Joints ◽  
Lap Joint ◽  
Load Bearing Capacity ◽  
Single Lap Joint ◽  
Reducing Stress ◽  
Peak Value ◽  
Alloy Weld

The influence of fillets with different geometry shape on the stress distribution in aluminum alloy weld-bonded single lap joint was investigated using elasto-plastic finite element method (FEM). The results show that it is advantageous of reducing stress concentration in adhesive layer near the ends of the lap zone in single lap weld-bonded aluminum joints and part of the stress transferring from adhesive layer to the nugget when the joints with a couple of right triangle fillets over other shapes. The load-bearing capacity of the whole weld-bonded joints may be improved. The full-triangular fillet is recommended that it be more advantageous of decreasing the stress peak value and making the stress distribution in overlap zone more uniform.

Effect of Recessing in Bondline on Stress in Co-Axial Lap Joint

2010 ◽  
Vol 97-101 ◽  
pp. 952-955
Author(s):  
Xiao Ling Zheng ◽  
Mei Rong Zhao ◽  
Min You ◽  
Zhi Li ◽  
Jia Ling Yan
Keyword(s):  
Finite Element Method ◽  
Aluminum Alloy ◽  
Elastic Modulus ◽  
Middle Part ◽  
Lap Joints ◽  
Lap Joint ◽  
Single Lap Joints ◽  
Single Lap Joint ◽  
Significant Difference ◽  
Peel Stress

The effect of recessing on the stresses distributed along the mid-bondline in both standard single lap joints and co-axial ones were analyzed using elasto-plastic finite element method (FEM). The results obtained show that the values of the peak stresses of all the stresses distributed in the mid-bondline were changed greatly as the preformed angle in over lap zone was about 10 0 when the high elastic modulus adhesive is used. The effect of the elastic modulus level on the stress distribution (especially the peak stresses) is small in the middle part of the lap zone. When taken the stress distributed in the middle part of the lap zone into account, there is nearly no significant difference between the peel stress distributed in the standard joint and co-axial single lap joint when the adhesives with lower elastic modulus was used. It is recommended that a co-axial joint is suitable for the recessing joint made by aluminum alloy and a higher elastic modulus adhesive.

Creep analysis of adhesively bonded single lap joint using finite element method

2014 ◽  
Vol 28 (7) ◽  
pp. 2743-2748 ◽  
Author(s):  
Mohammad Zehsaz ◽  
Farid Vakili-Tahami ◽  
Mohammad-Ali Saeimi-Sadigh
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Lap Joint ◽  
Adhesively Bonded ◽  
Single Lap Joint ◽  
Creep Analysis ◽  
Element Method

The Effect of Adhesive for Fillet on Stress in Weld-Bonded Joints

2010 ◽  
Vol 450 ◽  
pp. 502-505 ◽  
Author(s):  
Min You ◽  
Jia Ling Yan ◽  
Xiao Ling Zheng ◽  
Nan Feng Xiong ◽  
Ding Feng Zhu
Keyword(s):  
Elastic Modulus ◽  
High Stress ◽  
Bonded Joints ◽  
Longitudinal Stress ◽  
Lap Joint ◽  
Load Bearing Capacity ◽  
High Stress Region ◽  
Single Lap Joint ◽  
Stress Region ◽  
Peak Value

The influence of the fillet with different elastic modulus on the stress distributed in weld-bonded aluminum alloy single lap joint was investigated using elasto-plastic finite element method. The results show that the peak values of the stress along the mid-bondline at the points near the fillet edge were increased as the elastic modulus of the fillet increased. But at points near the both ends of the adherend in over lap zone as well as in the region of the nugget the peak stresses were decreased except longitudinal stress Sx. The peak value of Seqv decreased first, and then it increased again as the elastic modulus in fillet increased. The load-bearing capacity of the whole weld-bonded joints may be improved for the fillet with Adhesive B (825 MPa) for the relative high stress region in nugget was wider and the stress distribution in overlap zone was more uniform.

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