Design and analysis of the Hobby-Eberly Telescope Dark Energy Experiment bridge
| dc.contributor.advisor | Nichols, Steven P. | en |
| dc.contributor.committeeMember | Beno, Joseph H. | en |
| dc.creator | Worthington, Michael Scott | en |
| dc.date.accessioned | 2010-10-26T16:50:57Z | en |
| dc.date.available | 2010-10-26T16:50:57Z | en |
| dc.date.available | 2010-10-26T16:51:08Z | en |
| dc.date.issued | 2010-05 | en |
| dc.date.submitted | May 2010 | en |
| dc.date.updated | 2010-10-26T16:51:08Z | en |
| dc.description | text | en |
| dc.description.abstract | A large structural weldment has been designed to serve as the new star tracker bridge for the Dark Energy Experiment upgrade to the Hobby-Eberly Telescope at McDonald Observatory. The modeling approach, analysis techniques and design details will be of interest to designers of large structures where stiffness is the primary design driver. The design includes detailed structural analysis using finite element models to maximize natural frequency response and limit deflections and light obscuration. Considerable fabrication challenges are overcome to allow integration of precision hardware required for positioning the corrector optics to a precision of less than 5 microns along the 4-meter travel range. This thesis provides detailed descriptions of the bridge geometry, analysis results and challenging fabrication issues. | en |
| dc.description.department | Mechanical Engineering | |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.uri | http://hdl.handle.net/2152/ETD-UT-2010-05-1033 | en |
| dc.language.iso | eng | en |
| dc.subject | HET | en |
| dc.subject | HETDEX | en |
| dc.subject | Natural frequency | en |
| dc.subject | Frequency response | en |
| dc.subject | Large welded structure | en |
| dc.subject | Finite element analysis | en |
| dc.subject | FEA | en |
| dc.subject | Beam theory | en |
| dc.subject | Bridge design | en |
| dc.title | Design and analysis of the Hobby-Eberly Telescope Dark Energy Experiment bridge | en |
| dc.type.genre | thesis | en |
| thesis.degree.department | Mechanical Engineering | en |
| thesis.degree.discipline | Mechanical Engineering | en |
| thesis.degree.grantor | University of Texas at Austin | en |
| thesis.degree.level | Masters | en |
| thesis.degree.name | Master of Science in Engineering | en |