| EPSRC Reference: |
GR/R08520/01 |
| Title: |
Frame-Structure Vibration With Joint Friction |
| Principal Investigator: |
Ouyang, Professor H |
| Other Investigators: |
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| Department: |
School of Engineering |
| Organisation: |
University of Liverpool |
| Scheme: |
Fast Stream |
| Starts: |
01 October 2000 |
Ends: |
30 September 2003 |
Value (£): |
62,619
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Summary on Grant Application Form |
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Built-up structures such as trusses and frames are assembled using bolted joints. The presence of friction at the joints introduces a nonlinearity which can profoundly affect the dynamic behaviour of such structures. It has been estimated to account for over 90% of passive damping in trusses and frames and causes wear at the contact interfaces. Friction is classically a non-smooth nonlinearity which is very difficult to model and identify.This Fast-stream proposal sets out to model, stimulate and identify friction in the bolted joints of frame structures. Friction will be modelled as a non-smooth phenomenon in a detailed finite element model in the first instances. A small representative model of the joints will be constructed based on the previous finite element analysis. Then an equivalent damping model (possibly based on fractional calculus) will be established. An experimental rig of a small truss with bolted joints will be built to verify the dampening model. The final stage of the project is to update the parameters of the dampening model using frequency-response measurement from the test structures.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.liv.ac.uk |