Determination of cohesive laws in wood bonded joints under mode II loading using the ENF test

2014 ◽  
Vol 51 ◽  
pp. 54-61 ◽  
Author(s):  
F.G.A. Silva ◽  
J.J.L. Morais ◽  
N. Dourado ◽  
J. Xavier ◽  
F.A.M. Pereira ◽  
...  
Keyword(s):  
Mode Ii ◽  
Bonded Joints ◽  
Cohesive Laws ◽  
Mode Ii Loading ◽  
Enf Test

Determination of cohesive laws of composite bonded joints under mode II loading

2013 ◽  
Vol 52 ◽  
pp. 269-274 ◽  
Author(s):  
R.M.R.P. Fernandes ◽  
J.A.G. Chousal ◽  
M.F.S.F. de Moura ◽  
J. Xavier
Keyword(s):  
Mode Ii ◽  
Bonded Joints ◽  
Cohesive Laws ◽  
Mode Ii Loading

scholarly journals Mesoscale Modelling of Bond Behavior at FRP-Concrete under Mode II Loading: Effect of Rayleigh Damping

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Feng-chen An ◽  
Qiong-guan Xiao ◽  
Shuai Li ◽  
Hong-jun Li
Keyword(s):  
Low Frequency ◽  
Mode I ◽  
Mode Ii ◽  
Bonded Joints ◽  
Bond Behavior ◽  
Mode Ii Fracture ◽  
Rayleigh Damping ◽  
Bonded Joint ◽  
High Frequency Vibrations ◽  
Mode Ii Loading

The paper mainly focuses on the study of the effects of Rayleigh damping in the simulations of FRP-concrete bonded joints, thereby proposing an approach to determine the value of its appropriate Rayleigh damping. Specifically, the element tests under Mode I and Mode II fracture modes were first carried out to investigate the effects of the mass proportional Rayleigh damping and the stiffness proportional Rayleigh damping. An FRP-concrete bonded joint is then employed to further investigate the effects of Rayleigh damping on the simulation results under Mode II fracture mode. It is shown that low-frequency vibrations are produced in the simulations of the specimens loaded by Mode I loading and could be damped by the mass proportional Rayleigh damping, while high-frequency vibrations are produced in the simulations of the specimens loaded by Mode II loading and could only be damped by the stiffness proportional Rayleigh damping. It also shows that the stiffness proportional damping is essential to damp out the oscillations in such simulations, thereby improving the convergence. In addition, the procedure proposed in this paper can lead to a proper interval for the value of the stiffness proportional Rayleigh damping, beyond which an unreasonable simulation result may be obtained.

scholarly journals Determination of local stress intensity factors at microstructurally tortuous crack fronts under remote mode II loading

2017 ◽  
Vol 7 ◽  
pp. 254-261
Author(s):  
Stanislav Žák ◽  
Jana Horníková ◽  
Pavel Šandera ◽  
Tomáš Vojtek ◽  
Jaroslav Pokluda
Keyword(s):  
Stress Intensity ◽  
Stress Intensity Factors ◽  
Local Stress ◽  
Mode Ii ◽  
Intensity Factors ◽  
Mode Ii Loading

Determination of boundary effect on mode II fracture energy of FRP sheet-to-concrete bonded joints

2017 ◽  
Vol 181 ◽  
pp. 130-142 ◽  
Author(s):  
Shutong Yang ◽  
Yang Liu ◽  
Xiaoliang Xu ◽  
Jiazong Gong ◽  
Chao Yang
Keyword(s):  
Fracture Energy ◽  
Boundary Effect ◽  
Mode Ii ◽  
Bonded Joints ◽  
Mode Ii Fracture ◽  
Frp Sheet

Determination of Weight Functions for Cracks Under Mode-II Loading

2006 ◽  
Author(s):  
H. L. Li ◽  
X. Wang ◽  
R. Bell
Keyword(s):  
Weight Functions ◽  
Mode Ii ◽  
Unknown Parameters ◽  
Cracked Plate ◽  
Reference Stress ◽  
General Weight ◽  
Function Expression ◽  
Mode Ii Loading ◽  
General Weight Function

For cracks under mode-I loading, it has been demonstrated that a general weight function expression with three unknown parameters can be used to approximate a variety of crack configurations under mode-I loading. For a given crack geometry, the unknown parameters can be determined from reference stress intensity factors (SIFs) together with characteristic properties of the weight functions. It is demonstrated in this paper that a general weight function expression also exists for cracks under mode II loading. The determination of weight functions for cracks in mode II can then also be conducted using reference stress intensity factors (SIFs) together with characteristic properties of the weight functions. This method is used to obtain the mode II weight functions for test specimens including single edge cracked plate, internal center cracked plate and double edge cracked plate. These derived weight functions were further used to calculate the SIFs for the above cracks subjected to several linear and non-linear shear loads and were compared to available SIF solutions.

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