Non-linear analysis of hydro-mechanical interactions in control devices during transient period: Bond graph approach

Abstract

In this paper, a feasibility study on modeling the multi-physical dynamic behaviors of the start period of hydro-mechanical control devices is presented. Using a novel multi-model Bond graph approach, a nonlinear, variable degree-of-freedom, state-space model is developed for a typical pressure regulator during its start period. Simulation studies demonstrate the essential physical behavior of the regulator during the transient period, and confirm the integrity of the resulting nonlinear model of the system.

Energy-based viscoelastic model: a physical approach for material an elastic behavior by the bond graph approach

“…To generate such a physical viscoelastic model suitable for multi-physical system dynamic investigations, the bond graph (BG) modeling technique [13][14][15][16][17][18][19] is suggested in this paper. Working on the basis of physical system theory, the BG technique provides a continuous power exchange frame between the existing physical subdomains of a multiphysical system, and produces the behavior of the system on the basis of power conservative interactions between the existing energetic components of the system.…”