Numerical Investigation Of Dva In Attenuating The Transmitted Handarm Vibration From The Motorboat Engine
Prolonged exposure to the high level of vibration from motorboat engine handle can lead to the health associated problems such as the Hand-arm Vibration syndromes (HAVs). Therefore, in this study, the attenuation of transmitted hand-arm vibration during operation of motorboat engine is evaluated...
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| Format: | Monograph |
| Language: | English |
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Universiti Sains Malaysia
2021
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| Online Access: | http://eprints.usm.my/55747/ http://eprints.usm.my/55747/1/Numerical%20Investigation%20Of%20Dva%20In%20Attenuating%20The%20Transmitted%20Handarm%20Vibration%20From%20The%20Motorboat%20Engine.pdf |
| _version_ | 1848883167181668352 |
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| author | Sha’ari, Ahmad Syafiq Nazri |
| author_facet | Sha’ari, Ahmad Syafiq Nazri |
| author_sort | Sha’ari, Ahmad Syafiq Nazri |
| building | USM Institutional Repository |
| collection | Online Access |
| description | Prolonged exposure to the high level of vibration from motorboat engine handle
can lead to the health associated problems such as the Hand-arm Vibration syndromes
(HAVs). Therefore, in this study, the attenuation of transmitted hand-arm vibration
during operation of motorboat engine is evaluated using simulation approach in
MATLAB/Simulink software. One of the Structural Dynamic Modification (SDM)
method is applied in this study to attenuate the vibration of motorboat engine handle
which is the use of Dynamic Vibration Absorber (DVA). A 2 degree of freedom (2DOF)
system that represents the motorboat engine handle with DVA has been modelled and
the simulation results are compared to evaluate the vibration attenuation for two cases
of engine speeds. The simulation was also caried out for DVA with various mass ratios.
The mass ratio designed in this study is based on its effective range, which is
0.05<μ<0.25. From the simulation results, the DVA with mass ratio of μ = 0.25 shows
the best performance and successfully reduced the vibration of handle by 98.5 % and
99.8 % for both engine speeds 1 and 2, respectively. Then, a SDOF model which based
on Reynolds and Soedel, (1972) models is coupled with the motorboat handle model to
investigate the effectiveness of the DVA in reducing the transmitted hand-arm
vibration. The result shows that the hand-arm vibration is reduced by 88.6 % and 95.3
% for both engine speeds 1 and 2, respectively. As a conclusion, this study proved that
DVA can be one of an effective way to reduce hand-arm vibration for motorboat engine
handle. |
| first_indexed | 2025-11-15T18:46:30Z |
| format | Monograph |
| id | usm-55747 |
| institution | Universiti Sains Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T18:46:30Z |
| publishDate | 2021 |
| publisher | Universiti Sains Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | usm-557472022-11-24T04:21:16Z http://eprints.usm.my/55747/ Numerical Investigation Of Dva In Attenuating The Transmitted Handarm Vibration From The Motorboat Engine Sha’ari, Ahmad Syafiq Nazri T Technology TJ Mechanical engineering and machinery Prolonged exposure to the high level of vibration from motorboat engine handle can lead to the health associated problems such as the Hand-arm Vibration syndromes (HAVs). Therefore, in this study, the attenuation of transmitted hand-arm vibration during operation of motorboat engine is evaluated using simulation approach in MATLAB/Simulink software. One of the Structural Dynamic Modification (SDM) method is applied in this study to attenuate the vibration of motorboat engine handle which is the use of Dynamic Vibration Absorber (DVA). A 2 degree of freedom (2DOF) system that represents the motorboat engine handle with DVA has been modelled and the simulation results are compared to evaluate the vibration attenuation for two cases of engine speeds. The simulation was also caried out for DVA with various mass ratios. The mass ratio designed in this study is based on its effective range, which is 0.05<μ<0.25. From the simulation results, the DVA with mass ratio of μ = 0.25 shows the best performance and successfully reduced the vibration of handle by 98.5 % and 99.8 % for both engine speeds 1 and 2, respectively. Then, a SDOF model which based on Reynolds and Soedel, (1972) models is coupled with the motorboat handle model to investigate the effectiveness of the DVA in reducing the transmitted hand-arm vibration. The result shows that the hand-arm vibration is reduced by 88.6 % and 95.3 % for both engine speeds 1 and 2, respectively. As a conclusion, this study proved that DVA can be one of an effective way to reduce hand-arm vibration for motorboat engine handle. Universiti Sains Malaysia 2021-06-01 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/55747/1/Numerical%20Investigation%20Of%20Dva%20In%20Attenuating%20The%20Transmitted%20Handarm%20Vibration%20From%20The%20Motorboat%20Engine.pdf Sha’ari, Ahmad Syafiq Nazri (2021) Numerical Investigation Of Dva In Attenuating The Transmitted Handarm Vibration From The Motorboat Engine. Project Report. Universiti Sains Malaysia, Pusat Pengajian Kejuruteraan Mekanik. (Submitted) |
| spellingShingle | T Technology TJ Mechanical engineering and machinery Sha’ari, Ahmad Syafiq Nazri Numerical Investigation Of Dva In Attenuating The Transmitted Handarm Vibration From The Motorboat Engine |
| title | Numerical Investigation Of Dva In Attenuating The Transmitted Handarm Vibration From The Motorboat Engine |
| title_full | Numerical Investigation Of Dva In Attenuating The Transmitted Handarm Vibration From The Motorboat Engine |
| title_fullStr | Numerical Investigation Of Dva In Attenuating The Transmitted Handarm Vibration From The Motorboat Engine |
| title_full_unstemmed | Numerical Investigation Of Dva In Attenuating The Transmitted Handarm Vibration From The Motorboat Engine |
| title_short | Numerical Investigation Of Dva In Attenuating The Transmitted Handarm Vibration From The Motorboat Engine |
| title_sort | numerical investigation of dva in attenuating the transmitted handarm vibration from the motorboat engine |
| topic | T Technology TJ Mechanical engineering and machinery |
| url | http://eprints.usm.my/55747/ http://eprints.usm.my/55747/1/Numerical%20Investigation%20Of%20Dva%20In%20Attenuating%20The%20Transmitted%20Handarm%20Vibration%20From%20The%20Motorboat%20Engine.pdf |