نتایج جستجو برای: mechanical and thermal loading
تعداد نتایج: 16921258 فیلتر نتایج به سال:
background: mesenchymal stem cells (mscs) can be expanded and differentiated into many mature cell types including smooth muscle cells (smcs). in addition to growth factor, cyclic stretch contributes to differentiation of stem cells. mechanical stimuli are critical to morphological changes, development, regeneration, differentiation and pathology of mesenchymal tissues. the aim of this study is...
In this study, nonlinear bending of solid and annular functionally graded (FG) sector plates subjected to transverse mechanical loading and thermal gradient along the thickness direction is investigated. Material properties are varied continuously along the plate thickness according to power-law distribution of the volume fraction of the constituents. According to von-Karman relation for large ...
The aim of this paper is to present viscoelastic models to accurately simulate mechanical stresses which result from volume expansion during thermal oxidation or temperature ramps in silicon technology. Comparisons are made with wafer curvature measurements and it is shown that mechanical stresses can explain the "anomalously" fast initial regime during dry oxidation, without involving any addi...
In order to increasing of hydroxy functionality of HTPB an in-situ nitroxide mediated polymerization (NMP) of 1,3-butadiene was carried out in presence of TEPA as a polyfunctional nitroxide precursor. The multi-modal molar mass distribution of the product was elucidated by reductive hydrolyzation of the oligomeric product. The new polyfunctional hydroxyl-terminated polybutadiene (PFHTPB) was c...
Turbine blades are working under complex thermal gradient mechanical loading conditions. In the present study, a nickel-based single-crystal superalloy CMSX-4 is experimentally and computationally investigated thermo-mechanical fatigue (TMF) (TGMF) conditions of in-phase out-of-phase thermal-mechanical angel. The life TGMF with without barrier coating was studied. It confirmed that lifetime aff...
Background: Neuritis is one of the causes of neuropathic pains. It is proved that turmeric and curcumin have anti-neuritis effect that may be reduce of neuropathic pain. Objective: In this study, effects of turmeric and curcumin have been evaluated on behavioral response resulted from chronic constriction injury (CCI) in rat. Methods: In this experimental study Wistar male rat (200-250 gr) were...
in saturated soils, heating induces thermal expansion of both grains and the pore fluid. lower thermal expansion coefficient of aggregates results in the increase of pore pressure and reduction of the effective stress besides subsequent volume changes due to the dissipation of pore pressure and heat transfer. dissipation of thermally induced pore pressure with time is a coupled thermo-hydro-mec...
The effects of flexoelectricity on thermo-electro-mechanical behavior of a functionally graded electro-piezo-flexoelectric nano-plate are investigated in this paper using flexoelectric modified and the Kirchhoff classic theories. Moreover, using the variation method and the principle of minimum potential energy for the first time, the coupled governing nonlinear differential equations of the na...
A thermo-mechanical analytical model and a corresponding macroscopic bonded joint finite element is presented for the analysis of orthotropic double lap joints subjected to combined thermal-mechanical loads. The analytical solution offers an improvement in accuracy over its predecessor, at the cost of increased solution complexity. However, to facilitate the use of this solution, it has been in...
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