Improved Model of a Vibrating Sieve
401
Fig. 5 Deformation functions for position 3 of the exciter
4 Conclusions
The study leads to the following conclusions:
(1) the first three circular eigenfrequencies are close to the corresponding ones
obtained for a model with three degrees of freedom [10];
(2) the higher order circular eigenfrequencies are greater with one magnitude order,
compared to the first three ones;
(3) for the considered values, the forced vibrations the sieves have amplitudes of
the order of one centimeter, which ensures an efficient straining of the seed
mixture;
(4) for the first position of the excitator, the maximum amplitude is 16 mm for sieve
2, for the second position the maximum amplitude is 14 mm on sieve 3 and for
the third position the amplitude is 12 mm on sieve 1;
(5) since the coarse mixture is on the top sieve, (sieve number 3), it is convenient
to maximize the amplitude on this sieve, therefore the optimal configuration is
the one with the exciter on the top sieve.
401
Fig. 5 Deformation functions for position 3 of the exciter
4 Conclusions
The study leads to the following conclusions:
(1) the first three circular eigenfrequencies are close to the corresponding ones
obtained for a model with three degrees of freedom [10];
(2) the higher order circular eigenfrequencies are greater with one magnitude order,
compared to the first three ones;
(3) for the considered values, the forced vibrations the sieves have amplitudes of
the order of one centimeter, which ensures an efficient straining of the seed
mixture;
(4) for the first position of the excitator, the maximum amplitude is 16 mm for sieve
2, for the second position the maximum amplitude is 14 mm on sieve 3 and for
the third position the amplitude is 12 mm on sieve 1;
(5) since the coarse mixture is on the top sieve, (sieve number 3), it is convenient
to maximize the amplitude on this sieve, therefore the optimal configuration is
the one with the exciter on the top sieve.