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نمایش تعداد 1-10 از 29
Blunt Crack-Tip Elastoplastic Zone of Mixed Mode Fracture
This article discusses the characterization of fracture process zone at the tip of a blunt crack in elastoplastic materials under mixed mode loading. The analysis includes the description of elastoplastic zone geometry ...
Stress analysis of perforated composite plates
the effects of cutout on the load
bearing capacity and stress concentration of such plates is very important in designing of complex structures. An analytical investigation
is used to study the stress analysis of plates with different central...
Optimization of perforated composite plates under tensile stress using genetic algorithm
Discontinuities such as cutouts always cause stress concentration in the structure, which increases the local stress. Understanding the effective parameters on stress concentration and proper selection of these parameters enables the designer...
Relief of Edge Effects in Bi-Adhesive Composite Joints
Three-dimensional thermo-mechanical stress analysis of composite joints with bi-adhesive bonding is presented using the full layerwise theory. Based on three-dimensional elasticity theory, sets of fully coupled governing ...
An effective Approach for Optimal hole shape with Evolutionary Structural Optimization
of stress around the holes for safety and proper performance of components. The purpose of this work is to use the Evolutionary Structural Optimization (ESO) method to attain the optimal shape of the component so that it possesses a lower stress...
Effect of sample initial magnetic field on the metal magnetic memory NDT result
on the MMM output of a notched sample was investigated. The result, again, showed that MMM signals exhibit a drop at stress concentration zone when sample has high level of initial residual magnetic field....
Fatigue Damage Analysis of Drill pipes Using FEM and Cox Regression Model
Drill pipe fatigue damage occurs under cyclic loading conditions due to, for instance, rotation in a dogleg region. This paper presents two approaches to evaluate damage in drillpipes; First, Finite Element Method is used ...
Shape Optimization of Fillets and Notches Using Evolutionary Structural Optimization
The aim of this study is to find the best fillet and notch shape so that it possesses lower stress concentration factor. Evolutionary structural optimization (ESO) and additive evolutionary structural optimization (AESO) techniques are employed...