A new reliability technique for strain-based fatigue life design is developed in this paper. An empirical mean stress modified strain-life equation is used as performance function, in which: material property parameters, as fatigue strength coefficient and fatigue ductility coefficient; and mean stress and applied strain are taken as random variables. A major feature of this work is that, in the performance function, the terms involving material property parameters are combined into one generalized random variable as “capacity,” and the terms involving mean stress and applied strain are combined into another generalized random variable as “demand.” The limit state is then analyzed by using the interference technique to evaluate the reliability under a specified life. Another significant feature is that in order to meet the need of fatigue life design application, for a given cyclic strain history, a numerical method is developed to inversely search the life when certain reliability is specified. Two numerical cases are presented to demonstrate the method. [S0094-9930(00)01202-6]
Skip Nav Destination
Article navigation
Technical Papers
A Generalized Random Variable Approach for Strain-Based Fatigue Reliability Analysis
Jie Zhao,
Jie Zhao
Center for Computer-Aided Design, College of Engineering, The University of Iowa, Iowa City, IA 52242-1000
Search for other works by this author on:
Jun Tang,
Jun Tang
Center for Computer-Aided Design, College of Engineering, The University of Iowa, Iowa City, IA 52242-1000
Search for other works by this author on:
Han C. Wu
Han C. Wu
Department of Civil and Environmental Engineering, College of Engineering, The University of Iowa, Iowa City, IA 52242-1000
Search for other works by this author on:
Jie Zhao
Center for Computer-Aided Design, College of Engineering, The University of Iowa, Iowa City, IA 52242-1000
Jun Tang
Center for Computer-Aided Design, College of Engineering, The University of Iowa, Iowa City, IA 52242-1000
Han C. Wu
Department of Civil and Environmental Engineering, College of Engineering, The University of Iowa, Iowa City, IA 52242-1000
Contributed by the Pressure Vessels and Piping Division for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received by the PVP Division, April 27, 1999; revised manuscript received January 27, 2000. Associate Technical Editor: D. P. Jones.
J. Pressure Vessel Technol. May 2000, 122(2): 156-161 (6 pages)
Published Online: January 27, 2000
Article history
Received:
April 27, 1999
Revised:
January 27, 2000
Citation
Zhao, J., Tang, J., and Wu, H. C. (January 27, 2000). "A Generalized Random Variable Approach for Strain-Based Fatigue Reliability Analysis ." ASME. J. Pressure Vessel Technol. May 2000; 122(2): 156–161. https://doi.org/10.1115/1.556166
Download citation file:
Get Email Alerts
Related Articles
A Reliability-Based Expression of ASME B&PV Code Equation (11) for Class 2 and 3 Nuclear Pipes
J. Pressure Vessel Technol (October,2010)
The Influence of Mechanical and Laser Cutting on the Fatigue Strengths of Square Hollow-Section Welded T-Joints
J. Offshore Mech. Arct. Eng (August,2012)
A Reliability-Based Approach for Low-Cycle Fatigue Design of Class 2 and 3 Nuclear Piping
J. Pressure Vessel Technol (October,2010)
Reliability Based Design Optimization Using a Single Constraint Approximation Point
J. Mech. Des (March,2011)
Related Proceedings Papers
Related Chapters
Compromise between Tensile and Fatigue Strength
New Advanced High Strength Steels: Optimizing Properties
Subsection NB—Class 1 Components
Companion Guide to the ASME Boiler & Pressure Vessel Codes, Volume 1 Sixth Edition
Background Information
Guidebook for the Design of ASME Section VIII Pressure Vessels, Third Edition