Question
Download Solution PDFThe degree of freedom of a block type machine foundation is
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
A block-type machine foundation behaves like a rigid body resting on an elastic soil medium. As a rigid body in three-dimensional space, it has six degrees of freedom, which are:
Translational (3):
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Surge – movement along the x-axis
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Sway – movement along the y-axis
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Heave – movement along the z-axis (vertical)
Rotational (3):
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Roll – rotation about the x-axis
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Pitch – rotation about the y-axis
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Yaw – rotation about the z-axis
Additional InformationBlock-Type Machine Foundations
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Used for high-speed or impact machines (like turbines, compressors).
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The entire mass of the foundation moves as a single unit, making it rigid.
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Proper analysis must consider all 6 modes of vibration, especially for dynamic load design.
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Requires dynamic soil-structure interaction analysis.
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