نتایج جستجو برای: pressure solution

تعداد نتایج: 856081  

Journal: :نشریه دانشکده فنی 0
طلعت قماشچی زهرا اکبری

corn steep water as effluent which arrives in environment from starch processing industry has adverse effects on the environment and also large volume of fresh water is wasted. corn step water is composed of high concentration of proteins, sugar, starch, vitamin and minerals, so it can be used as substrate for production of biological products. hence, corn steep water concentration is important...

Journal: :iranian journal of mechanical engineering transactions of the isme 0
milad shokouhfar islamic azad university, south tehran branch mohammad reza eslami professor and fellow of the academy of sciences, mechanical engineering, department of mechanical engineering , amirkabir university of technology, tehran, iran mohsen jabbari department of mechanical engineering, south tehran branch, islamic azad university, iran atefeh hatefkia department of mechanical engineering, south tehran branch, islamic azad university, iran

in this paper, an analytical solution for computing the linear plastic stresses and critical temperature and pressure in a fgm hollow cylinder under the internal pressure and temperature is developed. it has been assumed that the modulus of elasticity and thermal coefficient of expansion were varying through thickness of the fgm material according to a power law relationship. the poisson's...

M Jabbari M Shokouhfar,

In this paper, an analytical solution for computing the linear plastic stresses and critical pressure in a FGM hollow cylinder under the internal pressure due to non-Axisymmetric Loads is developed. It has been assumed that the modulus of elasticity was varying through thickness of the FGM material according to a power law relationship. The Poisson's ratio was considered constant throughout the...

2011
W. L. Yu J. Zhang R. L. Hu Z. Q. Li X. H. Sun T. L. Li

Estimating active earth pressure accurately is very important when designing retaining wall. Based on the unified strength theory and plane strain assumption, an analytical solution has been developed to determine the active lateral earth pressure distribution on a retaining structure with the inclined cohesive backfill considering the effect of the intermediate principal stress. The solution d...

Introduction & Objective: The role of free radicals in reperfusion injury has been revealed in the previous studies. Protective effects of endogenic antioxidants include glutathione has been shown in cardiomyocyte. Intracellular L-cysteine availability is one of the major rate limiting factors in glutathione production. This study aimed to investigate the role of L-cysteine in the preservation ...

2007
Daniel De Wolf Yves Smeers

The problem of distributing gas through a network of pipelines is formulated as a cost minimization subject to nonlinear flow-pressure relations, material balances and pressure bounds. The solution method is based on piecewise linear approximations of the nonlinear flowpressure relations. The approximated problem is solved by an extension of the Simplex method. The solution method is tested on ...

Journal: :journal of solid mechanics 0
m shokouhfar south tehran branch, islamic azad university,tehran, iran m jabbari south tehran branch, islamic azad university,tehran, iran

in this paper, an analytical solution for computing the linear plastic stresses and critical pressure in a fgm hollow cylinder under the internal pressure due to non-axisymmetric loads is developed. it has been assumed that the modulus of elasticity was varying through thickness of the fgm material according to a power law relationship. the poisson's ratio was considered constant throughou...

2003
Christian G. Böhmer

Einstein’s field equations with cosmological constant are analysed for a static, spherically symmetric perfect fluid having constant density. Five new global solutions are described. One of these solutions has the Nariai solution joined on as an exterior field. Another solution describes a decreasing pressure model with exterior Schwarzschild-de Sitter spacetime having decreasing group orbits a...

It is generally known that severe plastic deformation processes with back pressure not only apply higher hydrostatic stress and more deformation compared to what a regular process can apply to a workpiece but also prevent surface defects in the workpiece during the process. Hydrostatic cyclic expansion extrusion (HCEE) was developed recently for processing long ultrafine-grained metals and allo...

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