Indian Journal of Science and Technology
DOI: 10.17485/ijst/2016/v9i21/94830
Year: 2016, Volume: 9, Issue: 21, Pages: 1-5
Original Article
Muhammad Sajjad Ahmad1 *, Mohsin Jamil1 , Javid Iqbal1 , Muhammad Nasir Khan1 , Mazhar Hussain Malik2 and Shahid Ikramullah Butt1
1 School of Mechanical and Manufacturing Engineering (SMME), [email protected]
[email protected]
[email protected]
[email protected]
[email protected]
2 Department of Computer Science, [email protected]
*Author For Correspondence
Muhammad Sajjad Ahmad
School of Mechanical and Manufacturing Engineering (SMME),
Email:[email protected]
Received Date:02 January 2016, Accepted Date:05 February 2016, Published Date:06 May 2016
Background/Objectives: Each structure tends to vibrate at particular frequencies, called resonant or natural frequencies. When a structure is excited by dynamic load with frequency coinciding one of its natural frequencies the structure experiences stresses and large displacements. In this paper effective mass participation factor criterion is used to solve the vibration problem in the ship mast. Methods/Statistical Analysis: The effective mass participation factor provides a measure of the energy contained within each resonant mode. Vibration problem originated when one of the antenna at top of mast was replaced by a new antenna with greater mass at same location. The overall mast structure started vibrating because of the resonance of natural frequencies of the mast structure with natural frequencies of rotary equipment. Findings: It caused interruption in sensitivity of equipment installed on the mast structure. Instead of fabricating the new mast structure, some alteration has been carried out on the basis of results obtained from modal analysis. Application/ Improvements: The study is very effective to overcome the vibration problems in ship mast.
Keywords: Effective Mass Participation, Modal Analysis, Mode Shape, Ship Mast
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