Large-amplitude vertical-torsional coupled free vibration setup for wind tunnel test
US10837864B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2018 |
| Grant date | Nov 17, 2020 |
| Priority date | — |
| Expiry date | Mar 5, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M9/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An experimental setup for bridge deck large-amplitude vertical-torsional coupled free vibration in wind tunnel test, which belongs to the technical field of wind tunnel test apparatus. The experimental setup includes the rigid model, the rigid circular rods, the lightweight rigid circular sprockets, the chains, the linear tensile vertical springs, the bearings, the sliders, and the guides. For the new setup, large-amplitude vertical-torsional coupled free vibration of a rigid deck model that failed in conventional testing device can be adapted by the vertical deformation of the springs without any lateral tilt. As a result, the possible nonlinear mechanical stiffness due to the springs tilt in conventional testing device is excluded. In addition, owing to the low rolling friction and damping between the sprockets and the chains, the mechanical damping ratio of the system are quite low and stable for very large-amplitude vibrations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.