نتایج جستجو برای: finite element models

تعداد نتایج: 1258358  

Journal: :iranian journal of science and technology transactions of mechanical engineering 2015
a. fadaei h. mokhtari

welding is one of the most important assembling methods which are widely applied in different applications. in service conditions, some of the weld joints which meet defects must be repaired. the residual stresses impress the operation and efficiency of the repair weldment. in this study, the temperature and the residual stress fields were investigated by both the finite element simulation and ...

M. Izadi-Nia and M. T. Ahmadi,

Arch dams are generally built in cantilvever monoliths. Vertical contraction joints between monoliths control the stresses due to concrete shrinkage and temperature variations. Past studies in earthquake safety evaluation of the system often show the tensile fracture and local nonlinear deformation of joints. In this paper, some nonlinear joint element constitutive models are presented to exami...

ژورنال: مواد پرانرژی 2020

Conventional analysis and design of reinforced concrete beams under blast load requires a long process. In addition to being time consuming, this method does not determine the extent of the influence of the geometric parameters of the beam and the load. To overcome this problem, in this research, the effect of each of these parameters is investigated using the mathematics response surface metho...

M. Izadi-Nia and M. T. Ahmadi,

Arch dams are generally built in cantilvever monoliths. Vertical contraction joints between monoliths control the stresses due to concrete shrinkage and temperature variations. Past studies in earthquake safety evaluation of the system often show the tensile fracture and local nonlinear deformation of joints. In this paper, some nonlinear joint element constitutive models are presented to exami...

2002
Stephen A. Billings Daniel Coca

A new approach to derive a finite element discretisation of PDE equations soley from observations is compared, in terms of approximation accuracy, with the standard finite element Galerkin approach which assumes knowledge of the governing PDE’s. It is shown both in theory and by means of an example that, for a given model order, the identified model is more accurate than the equivalent finite e...

Biria, Mohammad jafar, Eslami Amirabadi, Gholam reza, Farahmand, Farzam,

Stress analysis of all-ceramic three-unit dental bridges ‌using finite element method M.F. Biria *- Dr. F. Farahmand** - Dr. Gh. Eslami Amirabadi*** *- M.S in Biomechanics Engineering Faculty of Mechanics. Sharif Industrial University. ** - Associate professor of Mecanical Engineering Dept. Sharif Industrial University. *** - Assistant professor of Orthodontics Dept. Faculty of Dentistry Shahed...

Journal: :international journal of advanced design and manufacturing technology 0
najmeh khazraiyan islamshahr university n. dashtian gerami m. damircheli

in this article, finite element method and ale formulation were used to numerically simulate impact of low-velocity specific projectiles with water surface. for the simulation, ls-dyna finite element code was used. material models which were used to express behavior of air and water included null material model. for the projectile, plastic-kinematics material model was applied. mie-gruneisen eq...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2009
mahdi sharifian mohammad ali fanaei

saccharomyces cerevisiae (baker’s yeast) can exhibit sustained oscillations during the operation in a continuous bioreactor that adversely affects its stability and productivity. because of heterogeneous nature of cell populations, the cell population balance equation (pbe) can be used to capture the dynamic behavior of such cultures. in this work, an unstructured-segregated model is used for d...

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