End Effects in Twisted Cord-Rubber Composites

1996 ◽  
Vol 24 (4) ◽  
pp. 321-338 ◽  
Author(s):  
J. Padovan
Keyword(s):  
Finite Element ◽  
Shear Stress ◽  
Load Transfer ◽  
Transfer Problem ◽  
Central Feature ◽  
Axial Loads ◽  
Rubber Composites ◽  
End Effects ◽  
Element Simulation ◽  
Axial Normal Stress

Abstract This paper investigates the cord-matrix load transfer problem in twisted cord-rubber composites. The central feature of the study is to ascertain the polarizing effects of twist-induced coupling of the axial loads and torque. Particular emphasis is given to the end problem, namely the transition between the axial-circumferential shear stress-dominated end region and the axial normal stress and torque-controlled far-from-end zone. This is achieved through the development of both a closed form analytic formulation and its corroboration by a detailed finite element simulation.

Stress in Bonded Adherends for Single Lap Joints

1996 ◽  
Vol 12 (03) ◽  
pp. 167-171
Author(s):  
G. Bezine ◽  
A. Roy ◽  
A. Vinet
Keyword(s):  
Finite Element ◽  
Shear Stress ◽  
Numerical Model ◽  
Stress Distribution ◽  
Normal Stress ◽  
Lap Joints ◽  
Axial Loads ◽  
Normal Stress Distribution ◽  
Single Lap Joints ◽  
Element Technique

A finite-element technique is used to predict the shear stress and normal stress distribution in adherends for polycarbonate/polycarbonate single lap joints subjected to axial loads. Numerical and photoelastic results are compared so that a validation of the numerical model is obtained. The influences on stresses of the overlap length and the shape of the adherends are studied.

A Finite Element Prediction of Cellular Strain in a GAG-Scaffold

2007 ◽  
Author(s):  
A. J. F. Stops ◽  
L. A. McMahon ◽  
D. O’Mahoney ◽  
P. E. McHugh ◽  
P. J. Prendergast
Keyword(s):  
Tissue Engineering ◽  
Finite Element ◽  
Load Transfer ◽  
Mesenchymal Differentiation ◽  
Element Simulation ◽  
A Cell ◽  
Quantitative Understanding ◽  
Strain Mechanisms ◽  
Finite Element Prediction

Tissue engineering is an emerging area in bioengineering engaging biomaterials, biology and biomechanics. Current in-vitro studies have shown mesenchymal differentiation into specific cellular lineages when using osteoinductive factors [1], though the quantitative understanding of the load transfer process within a cell-seeded scaffold is still relatively unknown. Here, this paper presents a finite element simulation of the cellular-scaffold interaction so that cellular strain and the corresponding strain mechanisms can be evaluated.

Evaluation and prediction of carbon fiber–reinforced polymer cable anchorage for large capacity

2019 ◽  
Vol 22 (8) ◽  
pp. 1952-1964 ◽  
Author(s):  
Bo Feng ◽  
Xin Wang ◽  
Zhishen Wu
Keyword(s):  
Finite Element ◽  
Stress Concentration ◽  
Carbon Fiber ◽  
Load Transfer ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Anchorage System ◽  
Element Simulation

Aiming to address the problems of stress concentration on conical wedge anchorage, a fiber-reinforced polymer cable anchorage with segmental variable stiffness of the load transfer medium was proposed. The key parameters that affect the anchorage behavior were investigated. The mechanical properties of the carbon fiber–reinforced polymer tendon and load transfer medium were tested. The failure mode, anchoring efficiency, stress, and displacement in the anchor zone were studied. The parameter optimization was performed using an experimentally verified finite element simulation. The parameters of the anchorage system with large capacity were evaluated. The results demonstrate that the compressive strength of the load transfer medium is the designed stress limit for the anchorage system. The cable does not slip or become damaged in the anchor zone, and the anchoring efficiency reaches 91%. The distribution of the shear and radial stress on the cable surface is smooth, and the stress concentration is greatly relieved. The result of the finite element simulation is consistent with the experimental values when the friction coefficient is 0.15, and the material and geometric parameters of the anchorage system with cable forces of 5000, 10,000, 15,000, and 20,000 kN are suggested. The geometric parameters of the anchor system with diverse cable capacity can be preliminarily designed based on the fitting equations.

Finite Element Simulation of Perfect Bonding for Single Fiber Pull-Out Test

2011 ◽  
Vol 418-420 ◽  
pp. 509-512
Author(s):  
Gao Feng Wei ◽  
Guo Yong Liu ◽  
Chong Hai Xu ◽  
Xiao Qiang Sun
Keyword(s):  
Finite Element ◽  
Shear Stress ◽  
Finite Element Simulation ◽  
Stress Transfer ◽  
Interfacial Stress ◽  
Single Fiber ◽  
Resin Matrix ◽  
Pull Out ◽  
Element Simulation ◽  
Perfect Bonding

In this paper mechanical behavior of the interfacial perfect bonding between fiber-matrix composite is analyzed using a pull-out test based on the finite element simulation. The finite element method is used to calculate the interfacial stress and deformation distribution of single fiber reinforced resin matrix specimen. The transfer process of the shear stress along the fiber interface and the distribution patterns of the shear stress are studied. These results are useful to be able to predict effects on the stress transfer properties across the interface and the interfacial debonding behavior.

Analysis of magnetic force and dynamic characteristic for non-contact permanent magnet linear drive device

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1337-1345
Author(s):  
Chuan Zhao ◽  
Feng Sun ◽  
Junjie Jin ◽  
Mingwei Bo ◽  
Fangchao Xu ◽  
...  
Keyword(s):  
Finite Element ◽  
Permanent Magnet ◽  
Dynamic Characteristic ◽  
Driving Force ◽  
Magnetic Circuit ◽  
Response Speed ◽  
Computation Method ◽  
Element Analysis ◽  
Element Simulation ◽  
The Relationship

This paper proposes a computation method using the equivalent magnetic circuit to analyze the driving force for the non-contact permanent magnet linear drive system. In this device, the magnetic driving force is related to the rotation angle of driving wheels. The relationship is verified by finite element analysis and measuring experiments. The result of finite element simulation is in good agreement with the model established by the equivalent magnetic circuit. Then experiments of displacement control are carried out to test the dynamic characteristic of this system. The controller of the system adopts the combination control of displacement and angle. The results indicate that the system has good performance in steady-state error and response speed, while the maximum overshoot needs to be reduced.

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