Numerical Study on the Hydrostatic Test of Penstock
الكلمات المفتاحية:
Weld Joint، Initial Plastic Deformation، Residual Stresses، Penstockالملخص
The hydrostatic test of a full-scale model of penstock has been modeled in an ABAQUS, a finite element software package, to simulate the behavior of the finite element model with inner pressure. the von Misses stress distribution will be investigated in two steps; the first load-unload (FL-UNL) and the second load- unload (SL-UNL), and focus on where the yielding initiates and spreads [1]. This model has been sketched as the experimental model of the penstock, Figure 1, except that the third segment of cylindrical mantle of the experimental model has been left out, because the effect of size of the geometrical model on the run time of finite element analysis. On the other hand, this part of the experimental model is not important and could be negligible.
المراجع
S. Sedmak and A. Sedmak, "An Experimental Investigation Into The Operational Safety Of A Welded Penstock By A Fracture Mechanics Approach," Fatigue & Fracture of Engineering Materials & Structures, vol. 18, pp. 527-538, 1995.
A. S. Sedmak, Simon & Milović, Ljubica, "Pressure equipment integrity assessment by elastic-plastic fracture mechanics methods," 2011.
M. M. A. Algool, "Initial Plastic Deformation And Residual Stress Influencing The Welding Joint Behavior In The Presence Of Cracks," Doctoral Dissertation, Faculty Of Mechanical Engineering, University Of BELGRADE, Belgrade, 2015.
Y. Liu, Effects of Mesh Density on Finite Element Analysis vol. 2, 2013.
