Q5. With respect to Induced Vibrations in a ships hull:
A. State FOUR sources of excitation that may induce vibration into the main hull girder;
B. Suggest methods for reducing the vibration levels induced by EACH of the exciting forces in A.
Q1. i) Define the term 'vibrations’ and through examples, explain 'periodic' and oscillatory motions. (4)
ii) Name the type of vibration and how they are classified. (4)
iii) Machineries on board operate with their own natural vibrations which generally indicate their health. Explain the term 'abnormal vibration ' and the sources from where they originate. (8)
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