2019/07/02 by Jan N. Fuhg, Fuhg, Jan N., Amélie Fau +2
Computer Science · Engineering · #Adhesion, Friction, and Surface Interactions #Bladed Disk Vibration Dynamics #FOS: Electrical engineering #Gear and Bearing Dynamics Analysis #Systems and Control (eess.SY) #cs.SY #eess.SY #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.1907.02208
33 pages, 20 Figures
arxiv created 2019/07/02 · openalex publication_date 2019/07/02 · arxiv updated 2019/07/05 · openalex created_date 2022/07/28 · openalex updated_date 2026/08/04
Parametric studies for dynamic systems are of high interest to detect instability domains. This prediction can be demanding as it requires a refined exploration of the parametric space due to the disrupted mechanical behavior. In this paper, an efficient surrogate strategy is proposed to investigate the behavior of an oscillator of Duffing's type in combination with an elasto-plastic friction force model. Relevant quantities of interest are discussed. Sticking time is considered using a machine learning technique based on Gaussian processes called kriging. The largest Lyapunov exponent is proposed as an efficient indicator of non-regular behavior. This indicator is estimated using a perturbation method. A dedicated adaptive kriging strategy for classification called MiVor is utilized and appears to be highly proficient in order to detect instabilities over the parametric space and can furthermore be used for complex response surfaces in multi-dimensional parametric domains.