Abstract
The objective of this paper is to develop an anisotropic continuum damage model for high-cycle fatigue. A viscodamage model, which can handle frequently observed brittle damage phenomena, is developed to produce stress-dependent fatigue damage evolution. The governing equation for damage evolution is derived using an incremental method. A closed-form incremental constitutive relation is derived at last. The present model is validated through model calibration via (1) cyclic compression tests on a concrete, (2) cyclic tensile tests on another concrete, and (3) cyclic tensile tests on a unidirectional IM7/8552 fiber-reinforced composite in its longitudinal and transverse directions, respectively. The present model is found to handle high-cycle anisotropic, different tensile and compressive fatigue well. It is also found feasible to calibrate a continuum damage model from S–N and modulus degradation/maximum strain–cycle curves. The present model can be conveniently implemented in an explicit finite element analyzer for the fatigue life prediction of engineering structures.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
