A computational study on the cyclic softening and fatigue behaviour of medical PEEK. Issue 1 (17th December 2018)

• Record Type: Journal Article
• Authors: Beckmann, Agnes; Ma, Songyun; Zhang, Le; Stoffel, Marcus; Markert, Bernd
• Other Names: Müller G. guestEditor.; Ulbrich M. guestEditor.
• Is Part Of: Proceedings in applied mathematics and mechanics. Volume 18:Issue 1(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-12-17
• Subjects: Applied mathematics -- Periodicals; Engineering mathematics -- Periodicals; Mathematical physics -- Periodicals; 519
• DOI: 10.1002/pamm.201800299
• Languages: English
• ISSNs: 1617-7061

Abstract

Abstract: In the underlying study, a computational method to predict the cyclic plastic deformation and the fatigue life of medical PEEK is proposed. The OHNO‐WANG plasticity model was implemented as an Abaqus® user subroutine. The SMITH‐WATSON‐TOPPER criterion was implemented as a postprocessing Python script to predict the fatigue failure of PEEK. The validation of the OHNO‐WANG model with the five effective cyclic stable stress‐strain hysteresis curves show a very good agreement. The fatigue model was calibrated with a good final goodness of fit.