We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
A rapid path-length searching procedure for multi-axial fatigue cycle counting.
- Authors
WEI, Z.; DONG, P.
- Abstract
ABSTRACT In this paper, a series of advanced searching algorithms have been examined and implemented for accelerating multi-axial fatigue cycle counting efforts when dealing with large time histories. In a computerized calculation of the path-length dependent cycle counting method, most of the central processor unit's (CPU) time is spent on searching for the maximum range or distance in a stress or strain space. A brute-force search is the simplest to implement, and will always find a solution if it exists. However, its cost, in many practical problems, tends to grow exponentially as the size of the loading spectrum increases with a search time measured in the order of O( n2), where n is the number of spectrum data points. In contrast, a form of Andrew's monotone chain algorithm, as demonstrated in this paper, can remarkably reduce the solution time to the order of O( n log n). The effectiveness of the new path-length searching procedure is demonstrated by a series of worked examples with a varying degree of non-proportionality in multi-axial loading history.
- Subjects
ALGORITHMS; MATERIAL fatigue; STRAINS &; stresses (Mechanics); FRACTURE mechanics; DEFORMATIONS (Mechanics)
- Publication
Fatigue & Fracture of Engineering Materials & Structures, 2012, Vol 35, Issue 6, p556
- ISSN
8756-758X
- Publication type
Article
- DOI
10.1111/j.1460-2695.2012.01649.x