Cyclic Plastic Response and Fatigue Life of Materials

2007 ◽  
pp. 113-116
Author(s):  
Jaroslav Polák
Keyword(s):  
Fatigue Life ◽  
Plastic Response ◽  
Cyclic Plastic

scholarly journals Cyclic plastic response and fatigue life in symmetric and asymmetric cyclic loading

2011 ◽  
Vol 10 ◽  
pp. 568-577 ◽  
Author(s):  
J. Polák ◽  
M. Petrenec ◽  
T. Kruml ◽  
A. Chlupová
Keyword(s):  
Fatigue Life ◽  
Cyclic Loading ◽  
Plastic Response ◽  
Cyclic Plastic

Cyclic Plastic Response and Fatigue Life of Materials

2007 ◽  
Vol 348-349 ◽  
pp. 113-116 ◽  
Author(s):  
Jaroslav Polák
Keyword(s):  
Fatigue Life ◽  
Plastic Strain ◽  
Crack Growth ◽  
Strain Amplitude ◽  
Decisive Role ◽  
Cyclic Stress ◽  
Plastic Strain Amplitude ◽  
Short Crack ◽  
Plastic Response ◽  
Cyclic Plastic

Recently the decisive role of plastic strain amplitude for the initiation and the growth rate of short cracks has been demonstrated. The plastic strain amplitude can be related to the rate of short crack growth and also to the fatigue life. Since the cyclic stress-strain response of a material determines the plastic strain amplitude it influences basically its fatigue life. The experiments in stress and plastic strain controlled loading and short crack growth are presented and used to demonstrate the importance of the cyclic plastic response for the evaluation of the fatigue life.

Cyclic plastic response and fatigue life in superduplex 2507 stainless steel

2010 ◽  
Vol 32 (2) ◽  
pp. 279-287 ◽  
Author(s):  
Jaroslav Polák ◽  
Martin Petrenec ◽  
Tomáš Kruml
Keyword(s):  
Stainless Steel ◽  
Fatigue Life ◽  
Plastic Response ◽  
Cyclic Plastic

A Study on the Cyclic Plastic Zone Size Method, ω*, for Digital Fatigue Life Prediction of Arc-Welded Joints

2003 ◽  
Author(s):  
Tomohiro Hirata ◽  
Toshiaki Nakamaru ◽  
Keisuke Toyama ◽  
Shuichi Magara ◽  
Hiroshi Watanabe ◽  
...  
Keyword(s):  
Fatigue Life ◽  
Plastic Zone ◽  
Welded Joints ◽  
Life Prediction ◽  
Plastic Zone Size ◽  
Fatigue Life Prediction ◽  
Zone Size ◽  
Cyclic Plastic ◽  
Cyclic Plastic Zone

Elastic-Plastic Finite Element Simulation and Fatigue Life Prediction for Beam and Elbow Under Cyclic Loading

2007 ◽  
Author(s):  
Xian-Kui Zhu ◽  
Brian N. Leis
Keyword(s):  
Finite Element ◽  
Fatigue Life ◽  
Cyclic Loading ◽  
Plastic Strain ◽  
Kinematic Hardening ◽  
Kinematic Model ◽  
Cyclic Plastic ◽  
Hardening Models ◽  
Critical Location ◽  
Cyclic Plastic Strain

Work hardening and Bauschinger effects on plastic deformation and fatigue life for a beam and an elbow under cyclic loading are examined using finite element analysis (FEA). Three typical material plastic hardening models, i.e. isotropic, kinematic and combined isotropic/kinematic hardening models are adopted in the FEA calculations. Based on the FEA results of cyclic stress and strain at a critical location and using an energy-based fatigue damage parameter, the fatigue lives are predicted for the beam and elbow. The results show that (1) the three material hardening models determine similar stress at the critical location with small differences during the cyclic loading, (2) the isotropic model underestimates the cyclic plastic strain and overestimates the fatigue life, (3) the kinematic model overestimates the cyclic plastic strain and underestimates the fatigue life, and (4) the combined model predicts the intermediate cyclic plastic strain and reasonable fatigue life.

Seismic Proving Test of Eroded Piping: Status of Eroded Piping Component and System Test

2003 ◽  
Author(s):  
Y. Namita ◽  
K. Suzuki ◽  
H. Abe ◽  
I. Ichihashi ◽  
M. Shiratori ◽  
...  
Keyword(s):  
Fatigue Life ◽  
Ultimate Strength ◽  
Seismic Design ◽  
Plastic Response ◽  
Design Code ◽  
Seismic Safety ◽  
Testing Program ◽  
Safety Margins ◽  
Seismic Design Code ◽  
Piping Systems

In FY 2000, a 3-year testing program of eroded piping was initiated with the following objectives: 1) to ascertain the seismic safety margins for eroded piping designed under the current seismic design code, 2) to clarify the elasto-plastic response and ultimate strength of eroded nuclear piping. A series of tests on eroded piping components and eroded piping systems was planned. In this paper, the results of those tests are presented and analyzed, focusing on the influence of the form and the number of thinned-wall portions on the fatigue life of the piping.

scholarly journals Analysis of Cyclic Plastic Response of Heat Resistant Sanicro 25 Steel at Ambient and Elevated Temperatures

2014 ◽  
Vol 74 ◽  
pp. 68-73 ◽  
Author(s):  
Jaroslav Polák ◽  
Roman Petráš ◽  
Milan Heczko ◽  
Tomáš Kruml ◽  
Guocai Chai
Keyword(s):  
Elevated Temperatures ◽  
Plastic Response ◽  
Cyclic Plastic ◽  
Heat Resistant
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