Reduction of fan-induced vibrations in a steel-framed power plant structure | |
| Author | Nguyen Nam Trung |
| Call Number | AIT Thesis no.ST-04-13 |
| Subject(s) | Power-plants Fans (Machinery)--Vibration |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ST-04-13 |
| Abstract | Fans play an important role in power plants. However, structures used to support them are usually designed without considering the effects of fan-induced vibrations. This ignorance leads to excessive motions found in some steel-framed structures which are used to support fans. In this research, a mechanical draft (MD) cooling tower in Vietnam was studied to find approaches for the reduction of fan-induced vibrations. The principal causes of fan-induced vibrations in the studied structure were identified from recorded data, which were conducted in the direct measurement. A finite element model was built based on available as-built drawings. Responses of the structure to some types of fan-induced dynamic forces were computed by finite element analysis. A procedure for dynamic analysis of MD cooling towers and other structures supporting fans was proposed. With this procedure, the dynamic behavior of the structure caused by operation of fans may be reduced by changes in the early design steps. |
| Year | 2004 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ST-04-11 |
| Type | Thesis |
| School | School of Engineering and Technology |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Barry, William; |
| Examination Committee(s) | Pennung Warnitchai ;Pichai Nimityongskul; |
| Scholarship Donor(s) | Electricity of Vietnam (EVN); |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2004 |