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RISDesign and Life Prediction of Fired Heater Tubes in the Creep Range
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Realistic fired heater tube-life predictions are essential to safe and economical design, proactive inspection strategy and meaningful tube retirement evaluations. The traditional method of heater ...
Multiaxial Relaxation and Creep Damage Assessments—A Comparison of ASME N-47 and GLOSS Time-Scaling Methods
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Two simplified methods for determining multiaxial relaxation and creep damage, the GLOSS time-scaling and the ASME Code Case N-47 method, are described in this paper. The theoretical basis and ...
Residual Stress Estimation and Shakedown Evaluation Using GLOSS Analysis
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A simple method for estimating residual stresses using the GLOSS analysis is presented, and a shakedown assessment method is proposed. Practical pressure components exhibit some local elastic ...
Limit Loads Using Extended Variational Concepts in Plasticity
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Lower-bound limit load estimates are relevant from a standpoint of pressure component design, and are acceptable quantities for ascertaining primary stress limits. Elastic modulus adjustment ...
The Effect of Multiaxiality and Follow-Up on Creep Damage
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A simple approximate method for estimating creep damage in pressure components experiencing multiaxial relaxation and follow-up is presented. The theoretical formulation essentially relates the ...
The Generalized Local Stress Strain (GLOSS) Analysis—Theory and Applications
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: GLOSS analysis is a simple and systematic method for carrying out inelastic evaluations of mechanical components and structures on the basis of two linear elastic finite element analyses. The ...
Robust Stress-Classification of Pressure Components Using the GLOSS and GLOSS R-Node Methods
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The GLOSS and GLOSS r-node methods are used to classify stresses in pressure components. The classification scheme is akin to the prevailing ASME Boiler and Pressure Vessel Code procedures. The ...
Integrity Assessment of Pressure Components With Local Hot Spots
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Local hot spots can occur in some pressure vessels and piping systems used in industrial processes. The hot spots could be a result of, for instance, localized loss of refractory lining on ...
Robust Estimation of Inelastic Fracture Energy Release Rate (J ): A Design Approach
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: There are insufficient details during preliminary stages of a pressure component design to warrant a comprehensive inelastic determination of the fracture energy release rate, J. A simplified ...
Limit Load Estimation Using Plastic Flow Parameter in Repeated Elastic Finite Element Analyses
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The procedures described in this paper for determining a limit load is based on Mura’s extended variational formulation. Used in conjunction with linear elastic finite element analyses, the ...