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Prediction of Damping Ratio and Shear Modulus of Saturated Clay Soil under Rotating Machine |
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PP: 585-594 |
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doi:10.18576/amis/180310
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Author(s) |
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Mohammed Y. Fattah,
Ahmed S. Abdulrasool,
Mohamed A. Hafez,
Nahla M. Salim,
Anna R. Haroon,
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Abstract |
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| Developing countries industrial growth necessitates innovative machine foundation design and resilient infrastructure. Meanwhile, soil properties play a significant role in the satisfactory design of machine foundations. The paper presents an experimental work to determine accurately the damping ratio and shear modulus by equations. The paper studies the effect of different parameters (embedded depth of foundation, shape of footing, and changing operating frequency of machine) on the damping ratio and shear modulus of saturated clay soil. Moreover, mathematical expressions are derived from statistical analysis to predict the damping ratio for rectangular and circular footing on saturated clay. The physical model results reveal that the damping ratio inside the soil will be increased with an increase in the depth of the point inside the soil for all cases. The damping ratio tends to decrease with an increase in operating frequency. The maximum damping ratio has occurred below a rectangular foundation with a 16.6 Hz operating frequency in saturated clay. The damping ratio is a function of many factors, such as embedment depth, degree of saturation, shape of foundation, and operation frequency of the machine.
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