SEDL / STP / STP942-EB / STP24548S

Computer-Based Prediction of Cyclic Deformation and Fatigue Behavior

A, Conle
Ford Scientific Research Laboratories, Dearborn, MI

TR, Oxland
University of Waterloo, Waterloo, Ontario

TH, Topper
University of Waterloo, Waterloo, Ontario

Pages: 19    Published: Jan 1988

Download this paper for $25 PDF (436K)          View License Agreement
Abstract

The paper briefly reviews the history of rheological spring-slider based, stress-strain models, and the early computerized versions used to simulate cyclic deformation and predict fatigue life. A set of rules is introduced which allows cycle by cycle simulation of the local stress-strain behavior at the root of a notched component subjected to any variable amplitude load history; predicts the crack initiation life; and, with two modifications to the notch analysis and the fatigue damage summation routines, models the local stress-strain behavior at the crack tip and resulting crack propagation rates. Supporting software that has resulted in practical applications for automotive design is discussed.