Role of Falx on Brain Stress-Strain Responses

2008 ◽  
pp. 281-297 ◽  
Author(s):  
Narayan Yoganandan ◽  
Jianrong Li ◽  
Jiangyue Zhang ◽  
Frank A. Pintar
Keyword(s):  
Stress Strain ◽  
Strain Responses

The thermomechanical stress-strain response of intumescent mat materials through experiments and strain decomposition

2002 ◽  
Vol 37 (3) ◽  
pp. 187-199 ◽  
Author(s):  
H. J Kim ◽  
J. S Kim ◽  
M. E Walter ◽  
J. K Lee
Keyword(s):  
Constitutive Modelling ◽  
Load Control ◽  
Strain Response ◽  
Stress Strain ◽  
Dead Weight ◽  
Transient Stress ◽  
Thermomechanical Stress ◽  
Decomposition Procedure ◽  
Property Changes ◽  
Strain Responses

Intumescent mat materials in catalytic converters undergo chemical reactions that lead to material property changes and volume expansion during heating processes. Dead weight (load control) and displacement control compression experiments have been performed to explore static and transient stress-strain responses. The apparatus and methods for both experiments are described. The experimental results together with a strain decomposition procedure yield a master curve that can be employed for constitutive modelling.

scholarly journals Length Scale and Aging Effect on the Mechanical Properties of a 63Sn-37Pb Solder Alloy

2000 ◽  
Author(s):  
T. Jesse Lim ◽  
Wei-Yang Lu
Keyword(s):  
Ultimate Strength ◽  
Tensile Testing ◽  
Failure Strain ◽  
Aging Effect ◽  
Uniaxial Tensile ◽  
Strain Response ◽  
Stress Strain ◽  
Uniaxial Tensile Testing ◽  
Aging Conditions ◽  
Strain Responses

Abstract In this work, uniaxial tensile testing of a 63Sn-37Pb alloy with different specimen sizes and aging conditions had been carried out. Although the stress-strain responses of different specimen sizes and aging conditions differs, the ultimate strength of the specimens with 16 hours, 100°C aging are similar for the sizes tested. The specimens with 25 days, 100°C aging have different stress-strain response with different sizes, and have a lower ultimate strength and higher failure strain compared to 16 hours, 100°C aging specimens.

On stress – strain responses and photoinduced properties of some azo polymers

Polymer ◽  
2018 ◽  
Vol 140 ◽  
pp. 117-121 ◽  
Author(s):  
Anna Kozanecka-Szmigiel ◽  
Jerzy Antonowicz ◽  
Dariusz Szmigiel ◽  
Michal Makowski ◽  
Agnieszka Siemion ◽  
...  
Keyword(s):  
Stress Strain ◽  
Azo Polymers ◽  
Strain Responses

Atomistic Simulation Study of Mechanical Deformation of Al-Mg-Si Alloys

2021 ◽  
Vol 52 ◽  
pp. 149-163
Author(s):  
Hanae Chabba ◽  
Driss Dafir
Keyword(s):  
Deformation Behaviour ◽  
Compressive Loading ◽  
Embedded Atom Method ◽  
Stress Strain ◽  
Elasticity Limit ◽  
Embedded Atom ◽  
High Elasticity ◽  
Strain Relationship ◽  
Atomic Simulations ◽  
Strain Responses

Aluminum alloys have been attracting significant attention. Especially Al-Mg-Si alloys can exhibit an excellent balance between strength and ductility. Deformation mechanisms and microstructural evolution are still challenging issues. Accordingly, to describe how the type of phase influence mechanical behaviour of Al/Mg/Si alloys, in this paper atomic simulations are performed to investigate the uniaxial compressive behaviour of Al-Mg-Si ternary phases. The compression is at the same strain rate (3.1010 s−1); using Modified Embedded Atom Method (MEAM) potential to model the deformation behaviour. From these simulations, we get the total radial distribution function; the stress-strain responses to describe the elastic and plastic behaviors of GP-AlMg4Si6, U2-Al4Mg4Si4 and β-Al3Mg2Si6 phases. For a Detailed description of which phase influence hardness and ductility of these alloys; the mechanical properties are determined and presented. These stress-strain curves obtained show a rapid increase in stress up to a maximum followed by a gradual drop when the specimen fails by ductile fracture. From the results, it was found that GP-AlMg4Si6 & U2-Al4Mg4Si4 phases are brittle under uniaxial compressive loading while β-Al3Mg2Si6 phase is very ductile under the same compressive loading. The engineering stress-strain relationship suggests that β-Al3Mg2Si6 phase have high elasticity limit, ability to resist deformation and have the advantage of being highly malleable. Molecular dynamics software LAMMPS was used to simulate and build the Al-Mg-Si ternary system.

The Simulation and Role of Discontinuous Yield Behaviors of Material

2010 ◽  
Vol 163-167 ◽  
pp. 4590-4594
Author(s):  
Shao Wei Hu
Keyword(s):  
Strain Rate ◽  
Strain Rate Sensitivity ◽  
Rate Sensitivity ◽  
Stress Rate ◽  
Instability Criterion ◽  
Stress Strain ◽  
Dynamic Behaviors ◽  
Jerky Flow ◽  
Thermal Origin

Discontinuous yield of material as Jerky flow was explained. Then, the strain rate sensitivity (SRS) and instability criterion was given out. Some tests were carried out at constant stress rate, so Jerky flow is manifested as a discontinuity in the stress-strain curves in form of strain bursts. Finally, the dynamic behaviors of specimens during instability of thermal origin were simulated with COLSYS software, whose results are good with test ones.

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