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Authors want to present a new way of analysis and modelling of the Vacuum Packed Particle damper with the use of Discrete Element Method.  Such structures are composed on the basis of loose granular materials encapsulated in a hermetic space. Initially, the granular system behaves like a classical plastic mass. When the internal pressure is pumped out of the system, what was baggy bulk transforms into the solid (semisolid) state.  This particular ability could be useful in some specific applications. In previous works of the authors Vacuum Packed Particles were described by fenomenological models such as Gubanov or Gamota-Filisko. Those formulas do not take into consideration a micro behaviour of granular particles inside the damper or granular and encapsulation interactions. In this paper the authors provide the new DEM model for the Vacuum Packed Particles damper. The first step is to develop a model of an encapsulation including special boundary conditions (pressure) For the modelling process the YADE DEM software was used. YADE DEM is an extensible open-source framework for discrete numerical models, focused on Discrete Element Method. Authors developed a special plugin for the model that enables modeling the response of Vacuum Packed Particles on the external loading.  Acquired numerical results are presented and discussed.

Discrete element method approach to modelling VPP dampers