The effective of the passive and active techniques on the vibration control system
The interaction between structures and fluid flow in a direction perpendicular to the body can induce vibrations in the structure, a phenomenon known as vortex-induced vibration (VIV). This phenomenon may lead to structural failure due to resonance, which occurs when the natural frequency of the str...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Unviversity of Technology- Iraq
2025-07-01
|
| Series: | Engineering and Technology Journal |
| Subjects: | |
| Online Access: | https://etj.uotechnology.edu.iq/article_187498_9238b04fb438e77a0ee2c42c9b9010a9.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849699267769270272 |
|---|---|
| author | Firas Jasim Mohammed Mohammed Hatam Kadhom |
| author_facet | Firas Jasim Mohammed Mohammed Hatam Kadhom |
| author_sort | Firas Jasim |
| collection | DOAJ |
| description | The interaction between structures and fluid flow in a direction perpendicular to the body can induce vibrations in the structure, a phenomenon known as vortex-induced vibration (VIV). This phenomenon may lead to structural failure due to resonance, which occurs when the natural frequency of the structure matches the vortex shedding frequency. Therefore, it is essential to employ vibration control devices to address the resulting high-amplitude instabilities. In this study, a subsonic wind tunnel with open-circuit specifications was constructed. This open-type wind tunnel generates airflow at varying velocities through the test section. To control vibrations around the cylindrical pipe, an Open-Loop Active Vibration Control (OLAVC) system is proposed. This system utilizes dual control rods, made of hollow stainless steel, driven by two DC motors positioned at the upper and lower sides of the main cylindrical pipe, referred to as the CRBCP (Control Rod-Based Cylinder Pipe). The effectiveness of a passive control strategy was evaluated prior to energizing the DC motors at 12 V. The results indicated that passive control alone was insufficient to adequately suppress the vibrations of the cylinder pipe. Subsequently, the OLAVC procedure was implemented using several voltage levels—12 V, 10 V, 8 V, and 6 V—corresponding to 100, 83, 75, and 50% of motor power, respectively. The OLAVC system proved effective in reducing vibrations across all actuator configurations. The maximum suppression, reaching 79.05%, was achieved at a motor voltage of 12 V and a rotational speed of 2349 rpm. |
| format | Article |
| id | doaj-art-99ebae679ba94daa87a119edeaa08592 |
| institution | DOAJ |
| issn | 1681-6900 2412-0758 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Unviversity of Technology- Iraq |
| record_format | Article |
| series | Engineering and Technology Journal |
| spelling | doaj-art-99ebae679ba94daa87a119edeaa085922025-08-20T03:18:38ZengUnviversity of Technology- IraqEngineering and Technology Journal1681-69002412-07582025-07-0143752253510.30684/etj.2025.155222.1849187498The effective of the passive and active techniques on the vibration control systemFiras Jasim0Mohammed Mohammed1Hatam Kadhom2Electromechanical Engineering Dept., University of Technology-Iraq, Alsina’a street, 10066 Baghdad, Iraq.Electromechanical Engineering Dept., University of Technology-Iraq, Alsina’a street, 10066 Baghdad, Iraq.Electromechanical Engineering Dept., University of Technology-Iraq, Alsina’a street, 10066 Baghdad, Iraq.The interaction between structures and fluid flow in a direction perpendicular to the body can induce vibrations in the structure, a phenomenon known as vortex-induced vibration (VIV). This phenomenon may lead to structural failure due to resonance, which occurs when the natural frequency of the structure matches the vortex shedding frequency. Therefore, it is essential to employ vibration control devices to address the resulting high-amplitude instabilities. In this study, a subsonic wind tunnel with open-circuit specifications was constructed. This open-type wind tunnel generates airflow at varying velocities through the test section. To control vibrations around the cylindrical pipe, an Open-Loop Active Vibration Control (OLAVC) system is proposed. This system utilizes dual control rods, made of hollow stainless steel, driven by two DC motors positioned at the upper and lower sides of the main cylindrical pipe, referred to as the CRBCP (Control Rod-Based Cylinder Pipe). The effectiveness of a passive control strategy was evaluated prior to energizing the DC motors at 12 V. The results indicated that passive control alone was insufficient to adequately suppress the vibrations of the cylinder pipe. Subsequently, the OLAVC procedure was implemented using several voltage levels—12 V, 10 V, 8 V, and 6 V—corresponding to 100, 83, 75, and 50% of motor power, respectively. The OLAVC system proved effective in reducing vibrations across all actuator configurations. The maximum suppression, reaching 79.05%, was achieved at a motor voltage of 12 V and a rotational speed of 2349 rpm.https://etj.uotechnology.edu.iq/article_187498_9238b04fb438e77a0ee2c42c9b9010a9.pdfwindinduced vibration open loop control strategy control rods actuator vortexinduced vibration active vibration control |
| spellingShingle | Firas Jasim Mohammed Mohammed Hatam Kadhom The effective of the passive and active techniques on the vibration control system Engineering and Technology Journal wind induced vibration open loop control strategy control rods actuator vortex induced vibration active vibration control |
| title | The effective of the passive and active techniques on the vibration control system |
| title_full | The effective of the passive and active techniques on the vibration control system |
| title_fullStr | The effective of the passive and active techniques on the vibration control system |
| title_full_unstemmed | The effective of the passive and active techniques on the vibration control system |
| title_short | The effective of the passive and active techniques on the vibration control system |
| title_sort | effective of the passive and active techniques on the vibration control system |
| topic | wind induced vibration open loop control strategy control rods actuator vortex induced vibration active vibration control |
| url | https://etj.uotechnology.edu.iq/article_187498_9238b04fb438e77a0ee2c42c9b9010a9.pdf |
| work_keys_str_mv | AT firasjasim theeffectiveofthepassiveandactivetechniquesonthevibrationcontrolsystem AT mohammedmohammed theeffectiveofthepassiveandactivetechniquesonthevibrationcontrolsystem AT hatamkadhom theeffectiveofthepassiveandactivetechniquesonthevibrationcontrolsystem AT firasjasim effectiveofthepassiveandactivetechniquesonthevibrationcontrolsystem AT mohammedmohammed effectiveofthepassiveandactivetechniquesonthevibrationcontrolsystem AT hatamkadhom effectiveofthepassiveandactivetechniquesonthevibrationcontrolsystem |