Micromechanics based analytical model for estimation of stress distribution and failure initiation in constituents of UDFRP composites subjected to transverse loading

2020 ◽  
Author(s):  
Akash Verma ◽  
Srikanth Vedantam ◽  
Kiran Akella ◽  
Srinivasan M. Sivakumar
Keyword(s):  
Stress Distribution ◽  
Analytical Model ◽  
Transverse Loading ◽  
Failure Initiation

Determination of the Stress Distribution at the Interface Metal-Oxide: Numerical and Theoretical Considerations

2005 ◽  
Vol 237-240 ◽  
pp. 145-150 ◽  
Author(s):  
Sébastien Garruchet ◽  
A. Hasnaoui ◽  
Olivier Politano ◽  
Tony Montesin ◽  
J. Marcos Salazar ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Stress Distribution ◽  
Oxide Film ◽  
Metal Oxide ◽  
Reaction Kinetics ◽  
Analytical Model ◽  
Equilibrium Thermodynamics ◽  
Theoretical Considerations ◽  
Molecular Dynamics Results

In this paper we give a brief presentation of the approaches we have recently developed on the oxidation of metals. Firstly, we present an analytical model based on non-equilibrium thermodynamics to describe the reaction kinetics present during the oxidation of a metal. Secondly, we present the molecular dynamics results obtained with a code specially tailored to study the oxidation and growth of an oxide film of aluminium. Our simulations present an excellent agreement with experimental results.

Study of Pullout Performance of Self-Tapping Screws for Human Bone

2011 ◽  
Author(s):  
Zhijun Wu ◽  
Sayed A. Nassar ◽  
Xianjie Yang
Keyword(s):  
Finite Element ◽  
Stress Distribution ◽  
Analytical Model ◽  
Material Properties ◽  
Pedicle Screws ◽  
Pullout Strength ◽  
Bone Material ◽  
Synthetic Bone ◽  
Failure Propagation ◽  
Device Applications

The study investigates the pullout strength of self-tapping pedicle screws using analytical, finite element, and experimental methodologies with focus on medical device applications. The stress distribution and failure propagation around implant threads in the synthetic bone during the pullout process, as well as the pullout strength of pedicle screws, are explored. Based on the FEA results, an analytical model for the pullout strength of the pedicle screw is constructed in terms of the synthetic bone material properties, screw size, and implant depth. The characteristics of pullout behavior of self-tapping pedicle screws are discussed. Both the analytical model and finite element results are validated using experimental techniques.

scholarly journals An Analytical Model for Predicting the Stress Distributions within Single-Lap Adhesively Bonded Beams

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Xiaocong He ◽  
Yuqi Wang
Keyword(s):  
Stress Distribution ◽  
Boundary Conditions ◽  
Plane Strain ◽  
Analytical Model ◽  
Longitudinal Direction ◽  
Plane Strain Condition ◽  
Strain Condition ◽  
Stress Distributions ◽  
Governing Equations ◽  
Adhesively Bonded

An analytical model for predicting the stress distributions within single-lap adhesively bonded beams under tension is presented in this paper. By combining the governing equations of each adherend with the joint kinematics, the overall system of governing equations can be obtained. Both the adherends and the adhesive are assumed to be under plane strain condition. With suitable boundary conditions, the stress distribution of the adhesive in the longitudinal direction is determined.

An Analytical Model for Investigations on the Stress Distribution in Planar Solid Oxide Fuel Cells

2017 ◽  
Vol 78 (1) ◽  
pp. 2293-2307
Author(s):  
Vinzenz Guski ◽  
Keita Iritsuki ◽  
Motohisa Kamijo ◽  
Siegfried Schmauder
Keyword(s):  
Fuel Cells ◽  
Stress Distribution ◽  
Solid Oxide Fuel Cells ◽  
Analytical Model ◽  
Solid Oxide ◽  
Oxide Fuel

Equilibrium Displacement and Stress Distribution in a Two-Dimensional, Axially Moving Web Under Transverse Loading

1995 ◽  
Vol 62 (3) ◽  
pp. 772-779 ◽  
Author(s):  
C. C. Lin ◽  
C. D. Mote
Keyword(s):  
Stress Distribution ◽  
Plate Theory ◽  
Transverse Load ◽  
Transverse Displacement ◽  
Transverse Loading ◽  
Closed Form Solutions ◽  
Coupled Equations ◽  
Axially Moving ◽  
Axially Moving Web ◽  
The Web

Von Karman nonlinear plate equations are modified to describe the motion of a wide, axially moving web with small flexural stiffness under transverse loading. The model can represent a paper web or plastic sheet under some conditions. Closed-form solutions to two nonlinear, coupled equations governing the transverse displacement and stress function probably do not exist. The transverse forces arising from the bending stiffness are much smaller than those arising from the applied axial tension except near the edges of the web. This opens the possibility that boundary layer and singular perturbation theories can be used to model the bending forces near the edges of the web when determining the equilibrium solution and stress distribution. The present analysis is applied to two examples: (I) a web deflecting under its own uniformly distributed weight; (II) a web deflecting under a transverse load whose distribution is described by the product of sine functions in the axial and width directions. Membrane theory and linear plate theory solutions are used to characterize the importance of the web deformation solutions.

scholarly journals An Analytical Model to Predict Fracture of Off-Axis Unidirectional Composites

2002 ◽  
Vol 11 (5) ◽  
pp. 096369350201100
Author(s):  
J. Petermann ◽  
A. Plumtree ◽  
K. Schulte
Keyword(s):  
Analytical Model ◽  
Stress Component ◽  
Tensile Loading ◽  
Uniaxial Tensile ◽  
Homogeneous Material ◽  
Stress Distributions ◽  
Material Behaviour ◽  
Unidirectional Composites ◽  
Failure Initiation ◽  
Good Agreement

An analytical model based on isotropic homogeneous material behaviour is proposed to predict fracture in unidirectional composites under general loading. The model calculates the internal stress distribution corresponding to the applied load. In conjunction with the respective strength values, the model is capable of assessing the dominant stress component for failure initiation. For uniaxial tensile loading a comparison of calculated analytical stress distributions reasonably agrees with results from FE-analysis. A comparison of the analytical predictions with fractographic results for different off-axis angles provides good agreement.

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