Numerical model of a corroded weld joint connecting pipe to flange using finite element method was developed, and coupled with usual stress models. The structure material has been characterized experimentally. Monte Carlo simulations, FORM SORM methods have applied for estimating reliability failure probability under corrosion residual effects. A numerical case various rates conducted determine...

PURPOSE To obtain information about scleral thickness in different ocular regions and its associations. METHODS The histomorphometric study included 238 human globes which had been enucleated because of choroidal melanomas or due to secondary angle-closure glaucoma. Using light microscopy, anterior-posterior pupil-optic nerve sections were measured. RESULTS In the non-axially elongated grou...

based on two-dimensional plane stress and bifurcation functional from hill's general theory in polar coordinate the critical condition for elastic wrinkling of the flange of a circular blank ( the wave number in the flange and wrinkled area) during the deep-drawing process are obtained analyticaly to improve the previous given results. in this analytical study, the elastic limitation of the mat...

The development of transport infrastructure contributes to an increase in the demand for bridge structures, which leads need productivity their manufacture. overall welding is facilitated by volume welds performed a single pass. It proposed use two-electrode welding. Computer analysis such process has shown that acceptable fillet weld formation can be ensured rational parameters process, includ...

in present paper, a point to point optimal path is planned for a mobile manipulator with flexible links and joints. for this purpose, a perfect dynamic modeling is performed for mobile manipulators considering large deformation in links, shear effects, elastic joints, effect of gravitation, and non-holonomic constraints. to study large deformation of links, non-linear relation of displacement-s...

Six groups of austenitic 022Cr19Ni10 stainless steel bending specimens with three types cross-sectional forms were used to study the impact V-stiffeners on failure mode and flexural behavior lipped channel beams. These included in web compression zone at 1/3 height near compressed flange no flange, middle 1/2 tensioned flange. The findings show that without a V-stiffener have lower ultimate bea...