Oscillation Model Identification Based on Nonlinear Hybrid Method (NHM)

2015 ◽  
pp. 59-74
Author(s):  
Yong Li ◽  
Dechang Yang ◽  
Fang Liu ◽  
Yijia Cao ◽  
Christian Rehtanz
Keyword(s):  
Hybrid Method ◽  
Model Identification ◽  
Oscillation Model ◽  
Nonlinear Hybrid

scholarly journals A nonlinear hybrid method for detecting the frequency of unknown weak composite periodic signal

2006 ◽  
Vol 55 (10) ◽  
pp. 5115
Author(s):  
Zhang Zheng-Wei ◽  
Fan Yang-Yu ◽  
Zeng Li
Keyword(s):  
Hybrid Method ◽  
Periodic Signal ◽  
Nonlinear Hybrid

Elastic-Plastic Stress Analyses by Digital Image Correlation and Nonlinear Hybrid Method

2006 ◽  
Vol 3-4 ◽  
pp. 39-46
Author(s):  
Kenji Machida
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Digital Image Correlation ◽  
Stress Field ◽  
Digital Image ◽  
Hybrid Method ◽  
Crack Tip ◽  
Image Correlation ◽  
Elastic Plastic ◽  
Nonlinear Hybrid

In previous studies, the elastic stress field near the crack tip was investigated by digital image correlation and the 2-D intelligent hybrid method. In this study, the 2-D nonlinear hybrid method was developed to analyze the elastic-plastic singular stress field near the crack tip from the displacement data obtained by digital image correlation. Then, the 2-D nonlinear hybrid method was carried out to evaluate stress, strain and J integral. The 3-D elastic-plastic finite element method was conducted on the same specimen as the experiment, and the validity of this approach was discussed from the comparison of the experiment and 3-D finite element method.

scholarly journals Wave-induced response of a floating two-dimensional body with a moonpool

2015 ◽  
Vol 373 (2033) ◽  
pp. 20140109 ◽  
Author(s):  
Arnt G. Fredriksen ◽  
Trygve Kristiansen ◽  
Odd M. Faltinsen
Keyword(s):  
Free Surface ◽  
Boundary Conditions ◽  
Resonance Frequency ◽  
Hybrid Method ◽  
Two Dimensional ◽  
Body Boundary ◽  
Flow Domain ◽  
Wave Induced ◽  
Piston Mode ◽  
Nonlinear Hybrid

Regular wave-induced behaviour of a floating stationary two-dimensional body with a moonpool is studied. The focus is on resonant piston-mode motion in the moonpool and rigid-body motions. Dedicated two-dimensional experiments have been performed. Two numerical hybrid methods, which have previously been applied to related problems, are further developed. Both numerical methods couple potential and viscous flow. The semi-nonlinear hybrid method uses linear free-surface and body-boundary conditions. The other one uses fully nonlinear free-surface and body-boundary conditions. The harmonic polynomial cell method solves the Laplace equation in the potential flow domain, while the finite volume method solves the Navier–Stokes equations in the viscous flow domain near the body. Results from the two codes are compared with the experimental data. The nonlinear hybrid method compares well with the data, while certain discrepancies are observed for the semi-nonlinear method. In particular, the roll motion is over-predicted by the semi-nonlinear hybrid method. Error sources in the semi-nonlinear hybrid method are discussed. The moonpool strongly affects heave motions in a frequency range around the piston-mode resonance frequency of the moonpool. No resonant water motions occur in the moonpool at the piston-mode resonance frequency. Instead large moonpool motions occur at a heave natural frequency associated with small damping near the piston-mode resonance frequency.

Treatments of Plankton and Escherichia coli Cells using Hybrid Method with Water Cavitation and Discharge Plasma

2015 ◽  
Vol 135 (6) ◽  
pp. 357-365
Author(s):  
Satoshi Ihara ◽  
Hironori Itoh ◽  
Noriki Kobayashi ◽  
Yuko Inoue ◽  
Hiroaki Terato ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Hybrid Method ◽  
Discharge Plasma ◽  
I Cells

A Hybrid Method for Distribution Substation Reliability Evaluation

2017 ◽  
Vol 12 (2) ◽  
pp. 142
Author(s):  
Hemakumar Reddy Galiveeti ◽  
Arup Kumar Goswami ◽  
Nalin B. Dev Choudhury
Keyword(s):  
Hybrid Method ◽  
Reliability Evaluation
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