Verichev S.N., Metrikine A.V. |
Dynamic rigidity of a beam in a moving contact |
Journal of Applied
Mechanics and Technical Physics 41(6), 1111-1117, 2000 |
Summary. The paper is
devoted to the investigation of an equivalent dynamic stiffness of a
Timoshenko beam, lying on a visco-elastic foundation and interacting with a
uniformly moving point object. A general expression for the equivalent
stiffness is obtained. Particular attention is paid to the analysis of the
equivalent stiffness as a function of the object velocity. Comparison is made
of the equivalent stiffness of the Timoshenko and Euler-Bernoulli beams. It
is shown that the Euler-Bernoulli model can not be successfully used as the
object velocity exceeds the minimum phase velocity of waves in the beam. |