Comparison of Hybrid Metal-Composite Small-Pin Joints with Conventional Ones in Terms of Static and Fatigue Strength

2016 ◽  
Vol 821 ◽  
pp. 479-485
Author(s):  
Ganna Beketova ◽  
Marina Shevtsova ◽  
Volodymyr Symonov
Keyword(s):  
Fatigue Strength ◽  
Sheet Metal ◽  
Thin Sheet ◽  
Fatigue Tests ◽  
Bolted Joints ◽  
Metal Composite ◽  
Composite Part ◽  
Out Of Plane ◽  
Thin Sheet Metal ◽  
Plane Direction

The current research deals with special hybrid metal-composite joints (MCJ) which use thin sheet-metal reinforcement with small die-fixed pins (2-3 mm) embedded into the composite part of the joint. This technological trick significantly and positively influences strength of the metal-composite bolted joints loaded in out-of-plane direction. This fact was proved by comparison of pull-off static and fatigue tests results of MCJs with and without reinforcement.

scholarly journals The improvement of bolted joints model via finite element model updating method

2021 ◽  
Vol 15 (4) ◽  
pp. 8635-8643
Author(s):  
M. A. Yunus ◽  
M.N. Abdul Rani ◽  
M.A.S. Aziz Shah ◽  
M.S.M. Sani ◽  
Z. Yahya
Keyword(s):  
Mathematical Model ◽  
Sheet Metal ◽  
Dynamic Behaviour ◽  
Model Updating ◽  
Thin Sheet ◽  
Local Deformation ◽  
Bolted Joints ◽  
Fe Model ◽  
Thin Sheet Metal ◽  
Fe Model Updating

Efficient schemes to represent mathematical model of thin-sheet metal structures jointed by bolted joints for accurately predict the structure dynamic behaviour has been a significant unresolved issue in structural dynamics community. The biggest challenge is to efficiently incorporate the joints local deformation effects on the developed mathematical model via finite element (FE) method. Generally, the joints local deformation typically exerts on the joints mating area. To solve this issue, this paper proposes efficient schemes to represent mathematical model of thin-sheet metal structures jointed by bolted joints with application to accurately calculate the structure dynamic behaviour using FE model updating method. The initial FE model of the assembled structure was developed by employed Fastener Connector (CFAST) in MSC NASTRAN software to represent the bolted joints while, the inclusion of the local deformation effects at the bolted joints mating area was represented by contact elements. Then, the responses obtained from the FE model was evaluated by weight up with experimental data. FE model updating (FEMU) method then was utilised for minimising prediction discrepancies originated from the initial FE model based on the experimental data. The proposed scheme shows the accuracy of the initial prediction was improved from 25.03 % to 14.65 %  while the accuracy of the predicted mode shapes via modal assurance criterion (MAC) analysis were above 0.8. Therefore, the findings offer useful schemes for improving the quality of predicted dynamic behaviour, particularly in the thin-sheet metal jointed structure and the developed model can be used with confident for any subsequence dynamic analyses.

Experimental and Numerical Analysis of Blanking for Thin Sheet Metal Parts

2001 ◽  
Vol 4 (3-4) ◽  
pp. 319-333
Author(s):  
Vincent Lemiale ◽  
Philippe Picart ◽  
Sébastien Meunier
Keyword(s):  
Numerical Analysis ◽  
Sheet Metal ◽  
Thin Sheet ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Thin Sheet Metal

Damage evolution in creep bulging of thin sheet metal

2000 ◽  
Vol 42 (2) ◽  
pp. 163-184
Author(s):  
J. Tirosh ◽  
L. Rubinski ◽  
A. Shirizly ◽  
D.P. Harvey II
Keyword(s):  
Sheet Metal ◽  
Damage Evolution ◽  
Thin Sheet ◽  
Thin Sheet Metal
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