ISSN:
1662-7482
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The vibration of a beam excited by a moving simple oscillator is an extensively studiedproblem. However, the vibration of a beam excited by an elastic body with conformal contact hasattracted much less attention. This is the subject of the present paper. The established model is a bigimprovement to the moving oscillator model and has many engineering applications.Because the moving body is flexible, the moving loads at the contact interface are not known apriori and must be determined together with the dynamics of the whole system. Considerablemathematical complication arises as a result, compared with the moving-oscillator problem, even ifthe contact is assumed to be complete. In this paper, the equation of motion of the beam and themoving body are established separately using an analytical-numerical combined approach. Theequation for the moving loads is established through the displacement continuity at the contactinterface. It is found from the simulated numerical results that the deflection of the beam displaysseveral cycles of oscillation during the passage of the moving body and can exceed the maximumstatic deflection at moderate speeds, but is close to the static deflection when the speed is eithervery low or very high
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMM.5-6.457.pdf
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