Results 171 to 180 of about 1,750 (215)

An Experimental Study of Progressive Strain Growth Due to Thermal-Stress Ratcheting

Journal of Engineering Materials and Technology, 1978
A special plate-shaped specimen with two symmetrical, straight air gaps in the center portion and a pair of holes for load chucks at the end portion is used for thermal-stress ratcheting experiments. Experimental results on strain growth due to thermal-stress ratcheting are presented for specimens made of types 304 and 316 austenitic stainless steel ...
Takeo Uga
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Ratcheting strain and simulation of 16MnR steel under uniaxial cyclic loading

Computational Materials Science, 2012
Abstract 16MnR steel is widely used in pressure vessel in China and its ratcheting and fatigue behavior have attracted numerous interest during the past years. In this study, a series of experiments were performed on the uniaxial ratcheting deformation of 16MnR steel.
Xu Chen, Weihua Zhang
exaly   +2 more sources

Ratcheting Strain Assessment in Pressurised Stainless Steel Elbows Subjected to In-plane Bending

Procedia Engineering, 2013
Ratcheting studies were carried out on Type 304LN stainless steel elbows, by applying steady internal pressure and cyclic bending. The elbows were of 168 mm nominal outer diameter and the average thickness varied from 14.7 mm to 15.1 mm.
S Vishnuvardhan, G Raghava, P Gandhi
exaly   +2 more sources

Ratchetting strain prediction

International Journal of Pressure Vessels and Piping, 2007
A time-efficient method for predicting ratchetting strain is proposed. The ratchetting strain at any cycle is determined by finding the ratchetting rate at only a few cycles. This determination is done by first defining the trajectory of the origin of stress in the deviatoric stress space and then incorporating this moving origin into a cyclic ...
Mohammad Noban, Hamid Jahed
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Ratchetting characteristics of 316FR steel at high temperature, part I: Strain-controlled ratchetting experiments and simulations

International Journal of Plasticity, 1998
The paper is concerned with characteristics in ratchetting of 316FR steel at high temperature. In Part I, first, by discussing isothermal and nonisothermal “strain-controlled” ratchetting experiments, it is shown that 316FR steel exhibits the almost perfect closure of stress and strain hysteresis loops as well as the isotropic hardening depending on ...
Ohno, N., Abdel-Karim, M., Kobayashi, M., Igari, T.   +3 more
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Strain ratchetting of titanium upon reversible alloying with hydrogen

Philosophical Magazine A, 2001
Abstract During cyclic hydrogen charging (e.g., in metal–hydride systems), internal stresses and strains can be developed due to lattice swelling and/or phase transformation (e.g., allotropic transformation or hydride precipitation). We examine macroscopic plastic deformation due to such internal stresses (strain ratctetting) in the Ti–H system, where ...
M. Frary, C. Schuh, D. C. Dunand
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Ratchet Boundary Evaluation and Comparison With Ratcheting Experiments Involving Strain Hardening Material Models

Volume 1: Codes and Standards, 2012
Pressure components in nuclear power plants are designed to prevent the failure mechanism of incremental deformation or “ratcheting” due to the simultaneous application of mechanical loads such as pressure and cyclic loads. Design criteria using elastic methods that are specified in NB-3200 of ASME Section III Code are derived from a perfectly-plastic ...
H. Indermohan, W. Reinhardt
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A Fast Method for Ratchetting Strain Prediction

Volume 2: Computer Technology, 2006
A time efficient method for predicting ratchetting strain is proposed. By finding the ratchetting rate, at only a few cycles, the ratchetting strain of any cycle can be determined. It is shown that a trajectory of the origin of stress may be defined in the deviatoric stress space as the ratchetting progresses.
Mohammad Noban, Hamid Jahed
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Ratcheting Responses of Strain Hardening Plasticity Models

Volume 1: Codes and Standards, 2011
Nuclear reactor components are often subjected to combinations of sustained and cyclic stresses due to the application of internal pressure and transient temperature loads. During the thermal transients, the interaction of such stresses could cause cyclic plastic deformation, which may either lead to shakedown or ratchetting behavior.
H. Indermohan, W. Reinhardt
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Computational modeling of inelastic large ratcheting strains

International Journal of Plasticity, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Johansson, Göran, Ekh, Magnus, Runesson, Kenneth   +2 more
openaire   +1 more source