Analysis of Strength and Estimate of the Creep Life in the Cylinder of Combustion Chamber in MF 399 Tractor Diesel Engine using CNG Fuel

Subject Areas :

Received: 2017-02-19 Accepted : 2017-03-13 Published : 2017-05-22

Keywords: Finite Element, Nonlinear Programming, Cylinder, Creep Life, Low Load Risk,

Abstract :

Analysis of Strength and Estimate of the Creep Life in the Cylinder of Combustion Chamber in MF 399 Tractor Diesel Engine using CNG Fuel   Reza Jafarzadeh1*, Davood Mohamad Zamani2, Asad Modares Motlagh3, Iirag Ranjbar4 1.M.Sc in Mechanics of Agricultural Machinery Engineering, Islamic Azad University-Takestan Branch 2.Assistant Professor, Islamic Azad University-Takestan Branch 3.Associate Professor, Islamic Azad University-Takestan Branch 4. Associate Professor, Urmia University     Abstract: A combined method based on finite element and limit analyses theory is an appropriate and effective procedure to determine the collapse load of a system. This paper describe a technique for computing the lower bound limit collapse load in creep mechanics under plain strain and two dimensional loading conditions. The lower bound limit collapse load in plasticity is computed by assuming a perfectly plastic behavior together with associated flow rule for materials. In this combined method, a linear approximation of yield surface is used and by applying the equilibrium, stress boundary and discontinuity condition and utilizing a suitable optimization technique, the statically admissible stress field is obtained from which a lower safe limit to collapse load is computed. Keywords: Creep Life, Finite Element, Nonlinear Programming, Low Load Risk, Cylinder