In this paper, the effect of elliptical shape openings was numerically compared to the case when circular openings were used in the steel panel shear walls. At first, the finite element model in ABAQUS was calibrated by experimental results, obtained from previous studies. Then, three steel shear panels with different sizes of elliptical openings were analyzed under cyclic loads, and the result...

Deformation of the material during cyclic expansion extrusion (CEE) is investigated using upper-bound theorem. The analytical approximation of forming loads agrees very well with the FEM results for different amounts of chamber diameter, friction factor and also for lower die angles. However, the difference between analytical and numerical solution increases at higher die angles which are expla...

The safety of lifelines, as the most important urban facilities, under different conditions highly depends on the safe design and performance of these buried structures. This cannot be achieved unless their actual behaviors are well understood and considered at the designing stage. A new physical model was developed in Amirkabir University of Technology to study the behavior of buried pipes und...

Growing environmental demands and higher fuel efficiency encourage the use of new light-weight load-bearing materials even for operation under rougher conditions. Consequently, as used in vital components chassis, brake system or exhaust are subjected to thermomechanical fatigue during due variable mechanical thermal loads, it is crucial design engineers CAE analysts understand cyclic behaviour...

This paper proposes a simplified design approach to predict the flexural behavior of reinforced concrete (RC) beams strengthened by high-performance textile mortar (TRM) under cyclic loads. Based on experimental results, effect main factors as well effectiveness and reliability TRM strengthening layer loads were examined per ACI 437 method. The reinforcement ratio original RC beams, layer, inte...

A probabilistic model for mooring chain fatigue damage is developed based on the S–N approach. The effects of mean load and corrosion condition capacity chains are included by adopting a parameterized curve intercept parameter, allows uncertainties time dependencies these to be addressed. Uncertainties in loads also accounted for, including annual variability which may importance certain cases....

STUDY DESIGN An in vitro biomechanical study to compare 2 different dorsal screw fixation techniques in the cervical spine with respect to primary stability and stability after cyclic loading. OBJECTIVES To investigate if the biomechanical stability is better in pedicle screw or in lateral mass fixation. SUMMARY OF BACKGROUND DATA In patients with poor bone quality who require multisegmenta...

Abstract Due to an increase in axle loads, the development of excess pore water pressure and settlement a railway track foundation fine-grained subgrade soil can be observed. A thorough understanding mechanism is essential for settlements design potential ground improvement. In this paper, three dimensional numerical study presented, which investigates effects loads trains on both settlement. S...