نتایج جستجو برای: thermal stresses
تعداد نتایج: 254731 فیلتر نتایج به سال:
Background and Aims: Dental implants have been studied for replacement of missing teeth for many years. Productivity of implants is extremely related to the stability and resistance under applied loads and the minimum stress in jaw bone. The purpose of this study was to study numerically the 3D model of implant under thermal loads. Materials and Methods: Bone and the ITI implant were modele...
The aim of this study is to investigate the effects of temperature and thermal residual stresses on the impact behavior and damage of unidirectional glass/epoxy laminated composites. To this end, thermal stress analyses of the laminates with lay-ups [90/0/0/90]s, [90/0/45/45]s, [0/90/45/-45]s were carried out under temperatures of 20, 90 and -50 °C by using ANSYS software. Damage parameters pro...
Thermal residual stresses in functionally graded materials (FGMs) arise primarily from nonlinear spatial variations in the thermal expansion coecient, but can be signi®cantly adjusted by variations in modulus. Thermoelastic analysis of FGMs is complicated by such modulus gradients. A class of problems for which thermal stress solutions for materials with constant modulus can be used as a basis...
Experiments are conducted on damaged and undamaged space shuttle tile thermal protection system (TPS) to determine its thermomechnical behavior. The TPS specimens, which consists of a LI-900 tile, the strain isolator pad and the underlying structure, is subjected to a temperature profile corresponding to the thermal loading of the Access to Space (ATS) reference vehicle. Experiments are conduct...
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