scholarly journals LONGITUDINAL SHEAR STRESS OF A SEMI-INFINITE ELASTIC BODY WITH A NOTCH

1973 ◽  
Vol 1973 (211) ◽  
pp. 11-18 ◽  
Author(s):  
Norio Hasebe
Keyword(s):  
Shear Stress ◽  
Elastic Body ◽  
Longitudinal Shear

Effect of poisson's ratio strains in adherends on stresses of an idealized lap joint

1973 ◽  
Vol 8 (2) ◽  
pp. 134-139 ◽  
Author(s):  
R D Adams ◽  
N A Peppiatt
Keyword(s):  
Shear Stress ◽  
Poisson’S Ratio ◽  
Longitudinal Shear ◽  
Poisson's Ratio ◽  
Shear Stresses ◽  
Lap Joint ◽  
Stress Concentrations ◽  
Maximum Value ◽  
Set Up ◽  
Transverse Stresses

Poisson's ratio strains in the adherends of a simple adhesive lap joint induce transverse stresses both in the adhesive and in the adherends. Two simultaneous second-order partial-differential equations were set up to describe the normal stresses along and across an adherend and were solved both by an approximate analytical method and a finite-difference technique: the two solutions agreed closely. The adhesive shear stresses can then be obtained by differentiating these solutions. The transverse shear stress has a maximum value for metals of about one-third of the maximum longitudinal shear stress, and this occurs at the corners of the lap, thus making the corners the most highly stressed parts of the adhesive. Bonding adherends of dissimilar stiffness was shown to produce greater stress concentrations in the adhesive than when similar adherends are used.

scholarly journals The energetics of the breakup of a sheet and of a rivulet on a vertical substrate in the presence of a uniform surface shear stress

2011 ◽  
Vol 674 ◽  
pp. 281-306 ◽  
Author(s):  
S. K. WILSON ◽  
J. M. SULLIVAN ◽  
B. R. DUFFY
Keyword(s):  
Shear Stress ◽  
Critical Thickness ◽  
Longitudinal Shear ◽  
Surface Shear Stress ◽  
Lubrication Approximation ◽  
Volume Flux ◽  
Uniform Thickness ◽  
Surface Shear ◽  
Total Energies ◽  
Break Up

We use the lubrication approximation to obtain a complete description of the energetics of the breakup both of a fluid sheet of uniform thickness into a periodic array of infinitely many identical thin rivulets and of a single thin rivulet into one or more identical sub-rivulets on a vertical substrate in the presence of a prescribed uniform longitudinal shear stress at the free surface of the fluid by comparing the total energies of the different states. For both problems the situation when the volume flux is positive is relatively straightforward (and, in particular, qualitatively the same as that in the case of no prescribed shear stress), but when the volume flux is negative it is more complicated. However, whatever the value of the prescribed shear stress, there is always a critical thickness below which it is energetically favourable for a sheet to break up into rivulets and a critical semi-width below which it is energetically favourable for a rivulet to remain as a single rivulet, and a critical thickness above which it is energetically favourable for a sheet to remain as a sheet and a critical semi-width above which it is energetically favourable for a rivulet to break up into sub-rivulets.

Shear Strength and Failure Angle Analysis of Fillet Welds Based on Structural Stress Approach

2013 ◽  
Vol 364 ◽  
pp. 52-56 ◽  
Author(s):  
Chun Ge Nie ◽  
Wen Zhong Zhao ◽  
Yue Dong Wang
Keyword(s):  
Finite Element ◽  
Shear Stress ◽  
Shear Strength ◽  
Element Model ◽  
Longitudinal Shear ◽  
Fillet Welds ◽  
Structural Stress ◽  
Shear Tests ◽  
Failure Angle ◽  
Single Shear

With conventional shear stress formula given in AWS B4.0, huge difference of strength between longitudinal and transverse fillet welds exists, and different failure angle of two type welds could not be interpreted. In this paper, a mesh-insensitive structural stress based shear strength definition is presented for correlating weldment test data obtained from longitudinal and transverse fillet welds in literature. Finite element model were created according to the geometry of specimens, and shear stress at different cut plane of weld were calculated. Failure angle could be interpreted reasonably for two type fillet welds, and discrepancies in shear strength between transverse and longitudinal shear tests can now be reconciled, resulting in a single shear strength value regardless of specimen types and loading conditions with this proposed approach.

scholarly journals The Maximum Stress Failure Criterion and the Maximum Strain Failure Criterion: Their Unification and Rationalization

2020 ◽  
Vol 4 (4) ◽  
pp. 157
Author(s):  
Shuguang Li
Keyword(s):  
Shear Stress ◽  
Failure Criterion ◽  
Maximum Stress ◽  
Uniaxial Stress ◽  
Longitudinal Shear ◽  
Maximum Strain ◽  
Poisson Effect ◽  
Stress Strain ◽  
Strain Criterion ◽  
Stress Criterion

The maximum strain failure criterion is unified with the maximum stress failure criterion, after exploring the implications of two considerations responsible for this: (1) the failure strains for the direct strain components employed in the maximum strain criterion are all defined under uniaxial stress states, not uniaxial strain states, and (2) the contributions to the strain in a direction as a result of the Poisson effect do not contribute to the failure of the material in that direction. Incorporating these considerations into the maximum strain criterion, the maximum stress criterion is reproduced. For 3D stress/strain state applications primarily, the unified maximum stress/strain criterion is then subjected to further rationalization in the context of transversely isotropic materials by eliminating the treatments that undermine the objectivity of the failure criterion. The criterion is then applied based on the maximum and minimum direct stresses, the maximum transverse shear stress and the maximum longitudinal shear stress as the invariants of the stress state, instead of the conventional stress components directly.

Longitudinal shear stress and bond–slip relationships in composite concrete slabs

2014 ◽  
Vol 69 ◽  
pp. 37-48 ◽  
Author(s):  
A. Gholamhoseini ◽  
R.I. Gilbert ◽  
M.A. Bradford ◽  
Z.T. Chang
Keyword(s):  
Shear Stress ◽  
Longitudinal Shear ◽  
Concrete Slabs ◽  
Bond Slip

scholarly journals Experimental Study on Bond Stress between Ultra High Performance Concrete and Steel Reinforcement

2018 ◽  
Vol 3 (12) ◽  
pp. 1235 ◽  
Author(s):  
Ahad Amini Pishro ◽  
Xiong Feng
Keyword(s):  
Mechanical Properties ◽  
Shear Stress ◽  
High Performance ◽  
High Performance Concrete ◽  
Longitudinal Shear ◽  
Steel Reinforcement ◽  
Bond Stress ◽  
Axial Deformation ◽  
Ultra High Performance Concrete ◽  
Cement Based Materials

Due to axial deformations generally caused by flexure, shear stress will be generated across the interface between reinforcement and surrounding concrete. This longitudinal shear stress is called bond stress and coordinates deformation between concrete and reinforcement. With increasing a member's axial deformation, bond stress finally reaches its ultimate value, bond strength, after which deformation of reinforcement and surrounding concrete will be not coordinated any more. Studies have shown that addition of nanosilica into cement-based materials improves their mechanical properties. Considering the unique characteristics of nanosilica, it seems that this material can be used in ultra-high performance concrete. Therefore, further research is needed on how to use it in concrete mixes. Due to the importance of examining bond stress and the lack of exact equations for bond stress of ultra-high performance concrete and steel reinforcement, the present study aimed to assess the bond stress between concrete and steel reinforcement.

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