مرور Volume 3, Issue 2 بر اساس عنوان

در حال نمایش موارد 1 - 5 از 5

  • The effect of semi-active controller in Sirri jacket seismic vibration control 

    Taghikhany, T. (Tehran, Islamic Azad university. science and researches section, 2013-06-01)
    The Sirri jacket offshore platform was designed and installed in Persian gulf of Iran in 1975 and has been in service since that time. The importance of offshore structure's stability and the failure of this kind of structure ...

  • Experimental investigation of wave parameters effect on damage of the berm reshaped seawall under irregular wave attack 

    Bakhtiari, A. R.؛ Fathi Moghadam, M. (Tehran, Islamic Azad university. science and researches section, 2013-06-01)
    This paper presents an experimental study the influence of wave parameter on the damage of reshaping seawall, model tests have been performed in several water level conditions. The experiments of physical modeling of this ...

  • Hydrodynamic damped pitch motion of tension leg platforms 

    Tabeshpour, M. R.؛ Ataie Ashtiani, B.؛ Seif, M. S.؛ Golafshani, A. A. (Tehran, Islamic Azad university. science and researches section, 2013-06-01)
    Because of fluctuation in leg tension, pitch motion is very effective fatigue and life safety of leg elements in tension leg structures (TLSs). In this paper an exact solution for pitch vibration of a TLS interacting with ...

  • Influence of cement content on concrete performance in corrosive environments (sea water) 

    Soleimanirad, M.؛ Tadayon, M.؛ Rezaie, F. (Tehran, Islamic Azad university. science and researches section, 2013-06-01)
    In this study, the effect of cement content on concrete performance in corrosive environments is investigated on concrete mixtures having the same water/cement (w/c) ratio. Three w/c ratios (0.40, 0.45 and 0.50) were used ...

  • A Novel Indicator to Predict the Onset of Instability of a Gravitational Flow on a Slope 

    Chitsaz Boroujerdi, H.؛ A.Bidokhti, A.؛ Sharafatmandjoor, Sh. (Tehran, Islamic Azad university. science and researches section, 2013-06-01)
    In order to present a quantitative indicator for the onset of instability, in this paper, the critical points of a stratified gravitational flow on a slope are found and analyzed. These points are obtained by means of the ...