Inelastic Behavior of a Two-Bar System with Temperature-Dependent Elastic Modulus Under Cyclic Thermomechanical Loadings

2013 ◽  
pp. 145-163
Author(s):  
Abdelbacet Oueslati ◽  
Géry de Saxcé ◽  
Simon Hasbroucq
Keyword(s):  
Elastic Modulus ◽  
Inelastic Behavior ◽  
Temperature Dependent

scholarly journals Temperature-Dependent Stiffening and Inelastic Behavior of Newly Synthesized Fiber-Reinforced Super Flexible Silica Aerogels

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 2878
Author(s):  
Ameya Rege ◽  
Pascal Voepel ◽  
Emrah Okumus ◽  
Markus Hillgärtner ◽  
Mikhail Itskov ◽  
...  
Keyword(s):  
Silica Aerogels ◽  
Fiber Types ◽  
Static Tension ◽  
Inelastic Behavior ◽  
Temperature Dependent ◽  
Acoustic Insulation ◽  
Tension And Compression ◽  
Synthesis Procedure ◽  
Strength And Durability ◽  
Significant Attention

In recent years, flexible silica aerogels have gained significant attention, owing to their excellent thermal and acoustic insulation properties accompanied by mechanical flexibility. Fiber reinforcement of such aerogels results in a further enhancement of the strength and durability of the composite, while retaining the excellent insulation properties. In this paper, the influence of four different kinds of fibers within a flexible silica aerogel matrix is studied and reported. First, a description of the synthesis procedure and the resulting morphology of the four aerogel composites is presented. Their mechanical behavior under uniaxial quasi-static tension and compression is investigated, particularly their performance under uniaxial compression at different temperature conditions (50 °C, 0 °C, and −50 °C). The reinforcement of the flexible silica aerogels with four different fiber types only marginally influences the thermal conductivity but strongly enhances their mechanical properties.

Thermal Vibrations of Beams With Temperature-Dependent Material Properties

1995 ◽  
Author(s):  
Abulkhair M. Masoom
Keyword(s):  
Thermal Conductivity ◽  
Silicon Carbide ◽  
Stainless Steel ◽  
Elastic Modulus ◽  
Temperature Dependence ◽  
Material Properties ◽  
Temperature Dependent ◽  
Thin Beams ◽  
Thermal Vibrations ◽  
Coupled Theory

Abstract Thin beams subjected to thermal loads are considered. The formulation includes the temperature dependence of thermal conductivity and elastic modulus as well as coupled theory. A comparison is made between beams made of stainless steel and silicon carbide. Results show that significant differences are possible for temperature and stress solutions when temperature-dependent elasticity and conductivity are used, as opposed to the constant properties evaluated at a reference temperature.

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