Abstract
In addition to having static load machine foundations receive dynamic load from engine vibrations. Their structure must be able to withstand both loads without failures. This study aims to discuss loads on the machine foundation of a block type machine having a high frequency. The analysis method used lumped parameter system and the foundation dimensions were 6 x 4 x 1 m with a depth of 1 m, with engine frequencies of 1800 and 3000 rpm. The results of this analysis show that the higher the machine foundation was, the smaller the vertical and horizontal amplitude, and rocking amplitude amplitude would be. The value of the natural frequencies of the machine foundation of vertical and horizontal amplitudes got smaller, while the rocking amplitude became bigger. So, the amplitude clearance value of the frequency of 1800 rpm and 3000 rpm met the safety requirements of the machine foundation, namely the maximum vertical amplitude requirement is troublesome to persons, with high frequency machines vertical vibration is 0.002-0.003 and horizontal vibration was 0.004-0.005. Keywords: Machine foundations, amplitude, damping, static load, dynamic load
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