A method for accelerated numerical simulations of structures subjected to cyclic loading is investigated. Of particular interest is a class of structures where the structural properties evolve with time. The proposed method is based on conducting detailed finite element analysis for a set of cycles to establish a trend line, extrapolating the trend line spanning many cycles, and use the extrapolated state as initial state for additional FEA simulations. This includes a control function that automatically monitors the length of the cycle jump to ensure a realistic solution. We compare the proposed method to a reference calculation, where all incremental cycles are conducted, and find that the cycle jump solution replicates the true solution.
A Simple Numerical Method of Cycle Jumps for Cyclically Loaded StructuresInternational Journal of Fatigue
Publisher's StatementNOTICE: this is the author’s version of a work that was accepted for publication in International Journal of Fatigue. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Fatigue, 28, 12, (12-01-2006); 10.1016/j.ijfatigue.2006.01.010
Citation InformationCojocaru, D., and Karlsson, A. M., 2006, "A Simple Numerical Method of Cycle Jumps for Cyclically Loaded Structures," International Journal of Fatigue, 28(12) pp. 1677-1689.