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Trends in Applied Sciences Research
  Year: 2009 | Volume: 4 | Issue: 4 | Page No.: 200-215
DOI: 10.3923/tasr.2009.200.215
 
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The Effect of Frequency on the Cyclic Strain Accumulation of Plain Stainless Steel Pressurized Cylinders Subjected to Dynamic Bending Moment

S.J. Zakavi, M. Zehsaz and M.R. Eslami

Abstract:
The aim of this study is to evaluate the effect of frequency on the ratchetting behavior of plain stainless steel pressurized cylinders that may be used in the power plant components. The cylinder is subjected to an internal pressure (calculated as the design pressure for each cylinder) and alternately bending moments at different frequencies typical of seismic events. Ratchetting of the cylinder wall has been observed and recorded in the hoop direction. The nonlinear isotropic/kinematic (combined) hardening model is used to evaluate the ratchetting. Finite element analysis which models the cylinders under above mentioned loads and combined hardening model is applied to investigate the ratchetting. Stress-strain data and material parameters have been obtained from several stabilized cycles of specimens that are subjected to symmetric strain cycles. The results show that initially, the calculated rate of ratchetting is large and then decreases with the increasing of cycles. Also, the ratchetting data using FE analysis show the hoop strain ratchetting decreases with the increasing of frequencies and spacing from the resonant frequency.
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 RELATED ARTICLES:
  •    Cyclic Strain Accumulation of Plain Stainless Steel Pressurized Cylinders Subjected to Dynamic Bending Moment
How to cite this article:

S.J. Zakavi, M. Zehsaz and M.R. Eslami, 2009. The Effect of Frequency on the Cyclic Strain Accumulation of Plain Stainless Steel Pressurized Cylinders Subjected to Dynamic Bending Moment. Trends in Applied Sciences Research, 4: 200-215.

DOI: 10.3923/tasr.2009.200.215

URL: https://scialert.net/abstract/?doi=tasr.2009.200.215

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