Impact of Ggranular Materials on Stress Relaxation Tests Results of Elongated Special Granular Structures

• 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.
• Języki publikacji: EN

Abstrakty

EN

In the paper a new material with optional mechanical/rheological properties has been introduced. It is built on the basis of loose grains encapsulated in a hermetic sleeve, where in the next step so called underpressure is generated. This increases internal frictional forces acting between constituent elements (grains) and in the global scale causes stiffening of the granular system. Increasing of internal underpressure value causes non-linear changes in mechanical properties of the system. In this paper basic rheological experimental results are presented and grain's material influence on global physical properties is discussed.

Słowa kluczowe

EN

smart materials; granular materials; rheological properties; mechanical properties; encapsulation; underpressure

PL

materiały inteligentne; metriały granulowane; właściwości mechaniczne; właściwości reologiczne; enkapsulacja; podciśnienie

• Wydawca: Oficyna Wydawnicza Politechniki Warszawskiej
• Czasopismo: Machine Dynamics Problems
• Rocznik: 2008
• Tom: Vol. 32, No. 2
• Strony: 109--118
• Opis fizyczny: Bibliogr. 7 poz., 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, Częstochowa, 2005 (materials in electronic version).
• Bajkowski, J., Zalewski, R., 2006a, Influence of grain's material on the isotropic hardening function coefficients in compression tests, Proceedings of the XI International Conference Computer Simulation in Machine Design-COSIM'2006, Krynica Zdrój, 9-17.
• Bajkowski, J., Zalewski, R., 2006b, 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 VŠB - 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 właściwosci mechanicznych struktur utworzonych z granulatów umieszczonych w przestrzeni z podciśnieniem), PhD thesis, Politechnika Warszawska, Warszawa.
• Zalewski, R., Bajkowski, J., 2005, Tytuł w języku angielskim ( original title in Polish: Zdolność do kumulowania i dyssypacji energii przez materiały granulowane umieszczone w przestrzeni z podciśnieniem), Materialy XV Konferencji "Metody i Środki Projektowania Wspomaganego Komputerowo", Kazimierz, 17-23.
• Zalewski, R., Bajkowski, J., 2006, Evaluation of the viscous stress in the new "smart structures" built on the basis of the granular materials in uniaxial tensile test, Proceeding of the XIV Ukrainian-Polish Conference on "CAD in Machinery Design", Polyana, Ukraine 16 -20.