Volume 12, Issue 3

 

ارسال های اخیر

  • on the Elastic Stability of Sleeve Stiffened Hollow Columns; Focusing on Determination of Optimal Design Curves (TECHNICAL NOTE) 

    Shahi, H.؛ Sinaie, A. (Materials and Energy Research Center, 1999-08-01)
    The stability analysis of sleeve stiffened pin-ended slender hollow columns of pipe or box section is performed in the present study. This is accomplished by using energy method, employing three terms in the assumed ...

  • Corrosion of Concrete in Sea Water (RESEARCH NOTE) 

    Esmaili, S.؛ Pakshir, M. (Materials and Energy Research Center, 1999-08-01)
    Attack and disintegration of concrete structures under the influence of aggressive fluids, wet gases, etc. are understood as corrosion of concrete. The corrosion of concrete is a chemical, colloidchemical process, yet often ...

  • an Optimum Resource Allocation Model for Airport Passenger Terminals (RESEARCH NOTE) 

    Saffarzadeh, M. (Materials and Energy Research Center, 1999-08-01)
    According to the current Airport planning and design practices, for a given demand level there is a corresponding space requirement. While in practice, there are always trade-offs between cost and levels of service, labor ...

  • Combination of Approximation and Simulation Approaches for Distribution Functions in Stochastic Networks 

    jolai, fariborz؛ Fatemi Ghomi, S. M. T. (Materials and Energy Research Center, 1999-08-01)
    This paper deals with the fundamental problem of estimating the distribution function (df) of the duration of the longest path in the stochastic activity network such as PERT network. First a technique is introduced to ...

  • Flow Analysis Heat and Mass Transfer in a Room 

    Azimian, A. R. (Materials and Energy Research Center, 1999-08-01)
    This reports the study on the flow behaviour, heat transfer and contamination distribution in a room. For this purpose the 3-D incompressible Navier-Stokes equations, energy equation and a mass transfer equation which model ...

  • an Efficient Drive Circuit for Switched Reluctance Motor 

    Fallah, M.؛ Afjei, E. (Materials and Energy Research Center, 1999-08-01)
    The purpose of this paper is to present an efficient converter circuit used to drive switched reluctance motors. It uses the C-dump topology in which the trapped energy in the phase windings is returned to the supply ...

  • Reliability of Repairable System with Removable Multi-Repairmen 

    Ghimire, R. P.؛ Jain, Madhu (Materials and Energy Research Center, 1999-08-01)
    In this investigation, the explicit expressions for reliability function and mean time to failure (MTTF) of a repairable system with provision of spares and removable multi-repair facility have been established. In removable ...