Viscoplasticity
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Analytical solution of circular tunnel in elastic-viscoplastic rock mass
Abstract This paper deals with a deep circular tunnel excavated in infinite homogeneous and isotropic elasto-viscoplastic rock mass subjected to a hydrostatic initial stresses. The tunnel is divided into the initial plastic, viscoplastic, and elastic zones. By combining the generalized Bingham model with Mohr-Coulomb yield criteria, analytical solutions of t
Lat. Am. j. solids struct.. Publicado em: 29/07/2019
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2. A Two-Surface Viscoplastic Model for the Structural Steel
Abstract As extension of the previous two-surface model in plasticity, a two-surface model for viscoplasticity is presented herein. In order to validate and investigate the performance of the proposed model, several numerical simulations are undertaken especially for structural steel under monotonic and cyclic loading cases, where experimental results and nu
Lat. Am. j. solids struct.. Publicado em: 2017-06
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3. Static and dynamic analysis of reinforced concrete shells
The objective of this work is to provide a reliable numerical model using the finite element method (FEM) for the static and dynamic analysis of reinforced concrete (RC) shells. For this purpose two independently computer programs based on plasticity and viscoplasticity theories are developed. The well known degenerated shell element is used for the static a
Lat. Am. j. solids struct.. Publicado em: 2013-11
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4. Evaluation of properties and FEM Model of the Friction welded mild Steel-Al6061-Alumina
Evaluation of mechanical and interfacial properties of friction welded alumina-mild steel rods with the use of Al6061 sheet are presented in this work. SEM, EDX analysis, hardness and bending strength tests were conducted. The bonds were attained through interfacial interlocking and intermetalllic phase formation with average bending strengths in the range o
Mat. Res.. Publicado em: 18/12/2012
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5. Desenvolvimento de um novo algoritmo para análise viscoplástica com o método dos elementos de contorno. / Development of a new boundary elements algorithm for viscoplastic analysis.
The search for new mathematical models and innovative techniques for numerical analyses has been subject of many research studies. In analysis of models with infinite and semi-infinite domains, the Boundary Element Method (BEM) has been proved to be one of the most efficient numerical tools. On the other hand, in nonlinear analyses the BEM requires the evalu
Publicado em: 2007