Results 21 to 30 of about 6,717,309 (295)

A Theory of Undamageable Graphene

open access: yesEngineering Transactions, 2018
It is the aim of this work to develop and extend the theory of undamageable materials to graphene. An undamageable material is a material where the value of the damage variable remains zero throughout the deformation process.
George Z. VOYIADJIS, Peter Issa KATTAN
doaj   +1 more source

Existence and stability of a screw dislocation under anti-plane deformation [PDF]

open access: yes, 2014
We formulate a variational model for a geometrically necessary screw dislocation in an anti-plane lattice model at zero temperature. Invariance of the energy functional under lattice symmetries renders the problem non-coercive.
Hudson, Thomas, Ortner, Christoph
core   +1 more source

SUGGESTED ENERGY EQUIVALENCE APPROACH FOR THE DYNAMIC ANALYSIS OF TAPERED CHIMNEYS

open access: yesJournal of Engineering, 2005
In this paper an energy equivalence approach is suggested for the dynamic analysis of tapered chimneys. For any mode of vibration; by equating the kinetic energy of the actual chimney 1o that of an equivalent prismatic chimney, a hypothetical equivalent
Thamir K. Al-Azawi , Dhia, B. Ghailan
doaj   +1 more source

Parametric Study on Contact Explosion Resistance of Steel Wire Mesh Reinforced Geopolymer Based Ultra-High Performance Concrete Slabs Using Calibrated Continuous Surface Cap Model

open access: yesBuildings, 2022
This paper conducts a parametric analysis on the response of geopolymer-based ultra-high-performance concrete (G-UHPC) slabs reinforced with steel wire mesh (SWM) subjected to contact explosions using the validated Continuous Surface Cap (CSC) model ...
Cheng Liu   +4 more
doaj   +1 more source

A continuous/discontinuous Galerkin formulation for a strain gradient-dependent damage model [PDF]

open access: yes, 2004
The numerical solution of strain gradient-dependent continuum problems has been hindered by continuity demands on the basis functions. The presence of terms in constitutive models that involve gradients of the strain field means that the $C^0$ continuity
G. N. Wells   +2 more
core   +7 more sources

Estimation of Mode I Fracture of U-Notched Polycarbonate Specimens Using the Equivalent Material Concept and Strain Energy Density [PDF]

open access: yesApplied Sciences, 2021
Polycarbonate (PC) has a wide range of applications in the electronic, transportation, and biomedical industries. In addition, investigation on the applicability to use PC in superstrate photovoltaic modules is ongoing research. In this paper, PC is envisioned to be used as a material for structural components in renewable energy systems.
Jafar Albinmousa   +3 more
openaire   +2 more sources

Strong Equivalence of Qualitative Optimization Problems [PDF]

open access: yes, 2013
We introduce the framework of qualitative optimization problems (or, simply, optimization problems) to represent preference theories. The formalism uses separate modules to describe the space of outcomes to be compared (the generator) and the preferences
TruszczyƄski, Miroslaw   +2 more
core   +3 more sources

Micromechanics-Based Strength Criterion for Root-Reinforced Soil

open access: yesMathematics
To address the limitation of using experimental parameters in the macroscopic strength criterion, a micromechanical strength criterion for root-reinforced soil is developed.
Wei Luo   +4 more
doaj   +1 more source

A universal simplified equivalent method for complex forming processes of stacked structures

open access: yesMaterials & Design
Characterizing the constitutive relationship of stacked structures under combined stretching, torsional, and bending loading conditions presents significant challenges during the forming process of stator metal materials for permanent magnet motors ...
Ao Hu   +5 more
doaj   +1 more source

Evaluation of bonding properties by flat indentation method for an EBW joint of RAFM steel for fusion application

open access: yesNuclear Materials and Energy, 2020
Welding is essential to construction and safe operation of fusion reactors. Besides fusion materials themselves, small specimen test technologies (SSTT) are also essential to evaluate bonding properties of the joints for fusion application.
Haiying Fu   +11 more
doaj   +1 more source

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