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RISThermal Stress and Fatigue Analysis in Turbine Rotors
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A method of thermal stress and fatigue analysis under triaxial stress conditions is presented. A rotor of a marine steam turbine is taken as a typical example to illustrate the detailed method ...
Mixed Mode Ductile Fracture Studies With Nonproportional Loading Based on Continuum Damage Mechanics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Service loading imposed on engineering structures is often arbitrary or nonproportional. The paper presents an investigation of examining the effects of proportional and nonproportional loadings ...
Characterization of Notched Ductile Failure With Continuum Damage Mechanics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A recently developed anisotropic model of continuum damage mechanics has been applied successfully to characterize ductile fracture of cracked plates under mode I and mixed mode failures. The ...
Stability Conditions in Quasi-Static Crack Propagation for Constant Strain Energy Release Rate
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Measurement of valid fracture toughness of engineering materials and design assurance of quasi-static crack growth in structures before the onset of fracture instability are the important factors ...
Localized Necking Criterion for Strain-Softening Materials
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The paper presents the development of a localized necking criterion based on the singularity of acoustic tensor. This criterion is applicable to materials exhibiting strain-softening behavior. The ...
Initial Buoyancy Reduction in Exhausting Smoke With Solar Chimney Design
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A possible problem in using solar chimney as a natural smoke exhaust system will be identified in this paper. Smoke generated in a fire might not be removed effectively if the glazing walls ...
Time Integration Algorithm for a Cyclic Damage Coupled Thermo-Viscoplasticity Model for 63Sn-37Pb Solder Applications
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, a semi-implicit time integration scheme has been developed for a damage-coupled constitutive model to characterize the mechanical behavior of 63Sn-37Pb solder material under ...
A Unified Damage Approach for Predicting Forming Limit Diagrams
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Plastic deformation in sheet metal consists of four distinct phases, namely, uniform deformation, diffuse necking, localized necking, and final rupture. The last three phases are commonly known ...
Viscoplastic Constitutive Modeling of Anisotropic Damage Under Nonproportional Loading
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Based on the theory of damage mechanics, a viscoplastic constitutive modeling of anisotropic damage for the prediction of forming limit curve (FLC) is developed. The model takes into account ...
Prediction of Forming Limit Diagram Based on Damage Coupled Kinematic-Isotropic Hardening Model Under Nonproportional Loading
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Based on the theory of damage mechanics, an anisotropic damage coupled mixed isotropic-kinematic hardening plastic model for the prediction of forming limit diagram (FLD) is developed. The model ...