Author/Authors :
Jyant Kumar، نويسنده , , Chandra Obula Reddy ، نويسنده ,
Title Of Article :
Dynamic Response of Footing and Machine with Spring Mounting Base
Latin Abstract :
The effect of the spring mounting cushion inserted in between a machine base and
its concrete footing has been examined experimentally by conducting a number of block
vibrations tests. The machine was subjected to steady state vertical harmonic loading.
Experiments were performed with two different stiffness values of the spring mounting
cushion. The employment of the spring mounting cushion, with the stiffness much smaller
than that of soil strata, offers a drastic reduction in the resonant displacement amplitudes of
the footing. It also results in a significant decrease in the resonant frequency of the foundation.
The resonant displacement amplitudes of both the footing and the machine were found to
become lower with the smaller stiffness value of the springs. The resonant frequency for the
machine base, in all the experiments, was found to be invariably the same as that of the
footing.
NaturalLanguageKeyword :
active isolation , Damping , Stiffness , vibrations. , machine foundations
JournalTitle :
Studia Iranica
