A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Flutter stabilization and heaving-branch flutter
This paper aims to clarify the flutter mechanism for super-long span bridges. A series of wind tunnel tests are conducted against the fundamental girder sections, such as flat diamond section, twin rectangular cylinder and rectangular cylinder with vertical plates installed at the mid-chord points. The former two sections indicate relatively stable aerodynamic properties against the conventional coupled flutter, namely for torsional branch. The main reason for flutter stabilization of flat diamond section is the flow separations at two different points on the side-surface of the body. Regarding twin rectangular cylinder, the opening space and the turbulent flow induced in the upstream side has a large contribution to the flutter characteristics. On the other hand, rectangular cylinder with VP indicates coupled flutter for heaving branch. Mainly based upon aerodynamic derivatives and flutter analysis, this paper clarifies that the extremely small value of A*2 can cause this type of flutter instabilities.
Flutter stabilization and heaving-branch flutter
This paper aims to clarify the flutter mechanism for super-long span bridges. A series of wind tunnel tests are conducted against the fundamental girder sections, such as flat diamond section, twin rectangular cylinder and rectangular cylinder with vertical plates installed at the mid-chord points. The former two sections indicate relatively stable aerodynamic properties against the conventional coupled flutter, namely for torsional branch. The main reason for flutter stabilization of flat diamond section is the flow separations at two different points on the side-surface of the body. Regarding twin rectangular cylinder, the opening space and the turbulent flow induced in the upstream side has a large contribution to the flutter characteristics. On the other hand, rectangular cylinder with VP indicates coupled flutter for heaving branch. Mainly based upon aerodynamic derivatives and flutter analysis, this paper clarifies that the extremely small value of A*2 can cause this type of flutter instabilities.
Flutter stabilization and heaving-branch flutter
Matsumoto, M. (author) / Yoshizumi, F. (author) / Yabutani, T. (author) / Abe, K. (author) / Nakajima, N. (author)
1999
11 Seiten, 3 Quellen
Conference paper
English
Flutter stabilization and heaving-branch flutter
| British Library Conference Proceedings | 1999
Heaving Branch Coupled Flutter for Long Span Bridge
| British Library Conference Proceedings | 1998
| British Library Conference Proceedings | 1999
Pulley-heaving block device for restraining flutter of long-span bridge
| European Patent Office | 2021