A new energy-dissipation-based rate-independent constitutive law within the framework of elastoplasticity coupled with damage is proposed. With this methodology, inelastic strains and stiffness degradation exhibited by quasi-brittle materials under monotonic or cyclic loading conditions are taken into account. The proposed model able to capture micro-cracks closure-reopening effects due load re...

Articular cartilage is a soft tissue showing inelastic properties. Under cyclic loading, inelastic materials may dissipate mechanical energy into heat. In knee cartilage, due to an intrinsic reduced heat convection related to its avascularity, a local temperature increase could be observed. This phenomenon is referred to as self-heating. As cells are sensitive to temperature variation, the ener...

Abstract In recent years, prefabricated buildings have been developing positively in China. Prefabricated concrete stairs are widely used because of their quick construction, convenient handling, reduced cost, and premium appearance. They also promising application potential cast-in-place structures steel buildings. The important escape routes during earthquakes play the role “safety islands.” ...

in this paper, the effect of cyclic loading on punching strength of flat slabs strengthened with carbon fiber reinforced polymer (cfrp) sheets is studied. experimental results of ten slab specimens under monotonic and cyclic loading are analyzed. eight specimens were strengthened with cfrp sheets on the tensile face of the slabs and the two other specimens were kept un-strengthened as control s...

the present study focuses on the performance of precast concrete beam-column dowel connections subjected to cyclic loading by conducting experiments. in this study, one-third scale model of two types of precast and a monolithic beam-column connection were cast and tested under reverse cyclic loading. the precast connections considered for this study is a beam-column connection where beam is con...

The most critical failure regions are the joints between beams and columns. Under dynamic loads, bonding of rebars in concrete will be severely stressed fail. In addition to damaging column loading paths, collapse joint point may also affect structure's overall ductility capacity dissipate energy. This study examined relationship natural fiber beam-column by adding 0.5% 1.5% with an increment 0...

This report deals with the experimental investigation of using large deformable FRP, ± 45° oriented fibers, in concrete-filled fiber tubes (CFFT) under axial cyclic compressive loading. In addition, this report presents finite element modeling (FE) of CFFTs with large rupture strain FRP (LRS-FRP). The LRS-FRP is made with polyethylene naphthalate (PEN) and polyethylene terephthalate (PET) fiber...

Abstract The presented work investigates the degradation of an ecological energy carrier in form changes its properties, which was subjected to dynamic loading through a test device laboratory conditions. primary goal describe process itself terms obtained data analysis kinematic viscosity, water content, acidity number, and X-ray spectrometry. focused on monitoring values increase contaminants...

Long span roofs are very likely to oscillate when subjected wind load that can lead structure fatigue and endanger structures safety. Dampers have been used for long time dissipate earthquake induced energy in structures. This research work aims present experimental study of small size viscoelastic damper be installed truss roof. Small dampers large roof need tested know their performance behav...

objective: endothelium is a selective and permeable membrane for transferring nutrients and vital components to arterial wall. endothelial damage might lead to altered biological function of endothelium and clinical consequences such as atherosclerosis. blood pressure pulse always exerts circumferential tension to the arterial wall. hence, such tension together with other loads, play important ...