scholarly journals Inherent mechanical properties of bilayer germanene coupled by covalent bonding

RSC Advances ◽  
2019 ◽  
Vol 9 (59) ◽  
pp. 34437-34450 ◽  
Author(s):  
Mahmuda Raakib Arshee ◽  
Saqeeb Adnan ◽  
Mohammad Motalab ◽  
Pritom Bose
Keyword(s):  
Mechanical Properties ◽  
Fracture Mechanism ◽  
Tensile Loading ◽  
Covalent Bonding ◽  
Shear Loading ◽  
Periodic Behavior

Presence of interlayer bonds in bi-layer germanene results in a distinct fracture mechanism in tensile loading and direction dependent periodic behavior in shear loading.

A Numerical Model of Lead Material and Its Applicability to Simulation of Isolation Devices

2003 ◽  
Author(s):  
Akihiro Matsuda
Keyword(s):  
Mechanical Properties ◽  
Numerical Model ◽  
Large Strain ◽  
Tensile Loading ◽  
Cyclic Stress ◽  
Shear Loading ◽  
Test Results ◽  
Loading Test ◽  
Initial Yield Stress ◽  
Damping Material

This paper proposes a new numerical model of lead material to predict mechanical properties of isolation and vibration control devices using lead as damping material. Shear and tensile loading tests of lead were carried out to make the numerical model. Shear loading test specimen were constructed from a circumferential lead part welded at the top and bottom to steel flanges. Cyclic stress-strain relations in large strain region were obtained from shear loading test results. The elastic constants and the initial yield stress were given from tensile loading test results. Therefore a numerical model was made using both shear loading and tensile loading test results. Mechanical properties of lead dampers and isolated rubber bearings were simulated using the proposed numerical model via finite element method to show applicability of the model.

scholarly journals Spalling fracture mechanism of granite subjected to dynamic tensile loading

2021 ◽  
Vol 31 (7) ◽  
pp. 2116-2127
Author(s):  
Lin-qi HUANG ◽  
Jun WANG ◽  
Aliakbar MOMENI ◽  
Shao-feng WANG
Keyword(s):  
Fracture Mechanism ◽  
Tensile Loading ◽  
Spalling Fracture ◽  
Dynamic Tensile Loading

Environmental Effects on the Static and Fatigue Behaviours of Hemp Fibre under Tensile Loading

2015 ◽  
Vol 798 ◽  
pp. 410-418
Author(s):  
Anh Dung Ngo ◽  
Thu Nga Ho ◽  
Khalid Sefrioui Manar
Keyword(s):  
Mechanical Properties ◽  
Moisture Content ◽  
Failure Modes ◽  
Harmful Effect ◽  
Tensile Loading ◽  
Ambient Air ◽  
Absorption Mechanism ◽  
Hemp Fibre ◽  
Temperature And Humidity ◽  
Static Tensile

Environmental and loading mode effects on the tensile properties of Hemp fibre were investigated. At first, absorption of moisture into the fibre from ambient air and absorption of water into the fibre in immersion were studied. Then static and cyclic loadings tensile tests were conducted in various temperature and humidity conditions. It was found that, in ambient air (0% < RH < 80%) the moisture content of the studied fibre decreased with the increase of temperature conformed to the GAB model suggesting a multilayer absorption mechanism. On the contrary, for the fibre immersed in water, the moisture content increased with the increase of temperature. The activation of temperature on the diffusion of the water into the fibre by micro-pores and lumens jointly with the lack of possibility for the imprisoned water to evaporate might be the cause of this effect. Experimental results suggested that temperature and humidity could individually reduce the mechanical properties of Hemp fibre. Their interaction caused even a more harmful effect. Semi empirical and neural networks were used to predict the hygro-thermal effects on the mechanical properties under static tensile loading. Broken surfaces of the specimens were also examined showing different failure modes for static and cyclic tensile loadings. Finally, the value of the cellulose micro-fibrils angle (MFA) estimated using the static tensile stress-strain curve was 8.4o±1.9o.

Effect of hydrogenation on mechanical properties and tensile fracture mechanism of a high-nitrogen austenitic steel

2016 ◽  
Vol 52 (8) ◽  
pp. 4224-4233 ◽  
Author(s):  
Elena G. Astafurova ◽  
Valentina A. Moskvina ◽  
Galina G. Maier ◽  
Eugene V. Melnikov ◽  
Gennady N. Zakharov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Austenitic Steel ◽  
Fracture Mechanism ◽  
Tensile Fracture ◽  
High Nitrogen
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