Rheological Model Proposition for Granular Structures in Special Conditions

• Autorzy: Zalewski R.
• Konferencja: International Conference on Modelling and Simulation of the Friction Phenomena in the Physical and Technical Systems "FRICTION 2008" (5 ; 31.05-1.06.2008 ; Warsaw, Poland) ; French-Polish Seminar of Mechanics (16 ; 31.05-1.06.2008 ; Warsaw, Poland)
• Języki publikacji: PL

Abstrakty

EN

The present work mainly focuses on modeling of the mechanical properties of Special Granular Structures (SGS). SGS are structures composed on the basis of loose granular materials encapsulated in a hermetic space. Initially such a material behaves like a traditional plastic mass. When the internal pressure is pumped out of the system, what was baggy bulk transforms into solid (semisolid) state. In some aspects SGS are comparable to MR fluids. Typical rheological model, describing MR fluids and devices working on the basis of it, is adopted to describe cyclic loading experimental results of specially performed SGS testing specimen. In the final part of the paper some numerical results are presented.

Słowa kluczowe

PL

model reologiczny; właściwości reologiczne; materiały granulowane; materiały inteligentne; ciecz MR

EN

rheological model; rheological properties; granular materials; smart materials; MR fluids

• Wydawca: Oficyna Wydawnicza Politechniki Warszawskiej
• Czasopismo: Machine Dynamics Problems
• Rocznik: 2008
• Tom: Vol. 32, No. 3
• Strony: 117--125
• Opis fizyczny: Bibliogr. 8 poz., il., wykr.

Twórcy

autor

Zalewski R.

• Warsaw University of Technology,

Bibliografia

• Bajkowski, J., Zalewski, R., 2005, Determining of isotropic hardening function parameters for granular materials in special conditions in uniaxial traction test, CMM-2005 - Computer Methods in Mechanics, electronic version,
• Bajkowski, J., Zalewski, R., 2006, Magnitude of the Type of Granular Material on the Range of Elastic Deformation for Specialy Performed Granular Structures, Machine Dynamics Problems, 30, No 2, 18-27.
• Bajkowski, J., Zalewski, R., 2008, Some problems connected with designing of magnetorheological fluids and dampers, TRANSACTIONS of the VSB - Technical University of Ostrava Metallurgical Series, 1, 172-179.
• Zalewski, R., 2005, Analysis of the mechanical properties of structures, built on the basis of the granular materials, placed in a tight space with underpressure (original title in Polish: Analiza właściwości mechanicznych struktur utworzonych z granulatów umieszczonych w przestrzeni z podciśnieniem), Ph.D. Thesis, Politechnika Warszawska.
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• Ehrgott, R. C., Masri, S. F., 1994, Structural Control Applications of an Electrorheological Device, Proceedings of the International Workshop o Structural Control, USC Publication Number CE-9311, 115-129.
• Gamota, D. R., Filisko, F. E., 1991, Dynamic Mechanical Studies of Electrorheological Materials: Moderate Frequencies, Journal of Rheology, 35, 39-425.
• Shames, I. H., Cozzarelli, F. A., 1992, Elastic and Inelastic Stress Analysis, Pentice Hall, Englewood Cliffs, New Jersey, 120-122.