Determination of Stress Concentration Factor for a Rectangular Bar with Fillet Under Axial Loading: An Artificial Neural Networks Approach

Using computer techniques, stress concentration factors from the graphs can be converted into numerical values. Stress concentration factor values were collected in a database and an Artificial Neural Network (ANN) model can be developed for improving and extending the database. ANN model provides accuracy in obtaining the stress concentration factor values

An Isothermal Model for Evaluating Stress and Strain in the Polymeric Block of the Block-on-Ring System

This paper presents the results of simulating an isothermal frictional contact between a polymeric block and a steel ring. The model takes into account the elasto-plastic behavior of the polymeric materials and the friction coefficient of the two triboelements in dry regime as determined from tests done on a block-on-ring system. The results given by the model are compared to some characteristics of the actual test ring (geometry of the wear track). The mechanical characteristic of the polymer material were modeled in accordance to the results obtained from the traction tests

Prediction of Buckling and Postbuckling Behaviour of Composite Ship Panels

The behavior of ship plating normally depends on a variety of influential factors, namely geometric/material properties, loading characteristics, initial imperfections, boundary conditions and deterioration arising from corrosion and fatigue cracking. The analysis is presented for a uniaxially in-plane loaded, clamped, composite laminated quadratic plate. The imperfection is considered as the initial deformation due to the manufacturing operations: cosinusoidal shape in both of the longitudinal and transverse direction. Usually, the initial deformation mode appears in the form such as the fundamental mode of the buckling or vibration (figure 1) Variation of the maximum transverse displacement regarding the inplane load (displacement controlled after nonlinear buckling analysis) for three cases are presented