| Tag |
First Indicator |
Second Indicator |
Subfields |
| LEADER |
00000cam a2200000Ka 4500 |
| 001 |
in00002717721 |
| 005 |
20151202142341.0 |
| 006 |
m f d |
| 007 |
cr unu|||||||| |
| 008 |
110822s2011 txu obm 000 0 eng d |
| 035 |
|
|
|a (OCoLC)ocn747435984
|
| 035 |
|
|
|a (OCoLC)747435984
|
| 035 |
|
|
|a (TxCM)http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-7711
|
| 040 |
|
|
|a TXA
|c TXA
|d UtOrBLW
|
| 049 |
|
|
|a TXAM
|
| 099 |
|
|
|a 2010
|a Thesis
|a 1969.1/ETD-TAMU-2010-05-7711
|
| 100 |
1 |
|
|a Elwell, Roston Clement.
|
| 245 |
1 |
0 |
|a Miniature hourglass shaped actuator geometry study using a finite element simulation /
|c by Roston Clement Elwell.
|
| 264 |
|
1 |
|a [College Station, Tex.] :
|b [Texas A&M University],
|c [2011]
|
| 300 |
|
|
|a 1 online resource.
|
| 336 |
|
|
|a text
|b txt
|2 rdacontent
|
| 337 |
|
|
|a computer
|b c
|2 rdamedia
|
| 338 |
|
|
|a online resource
|b cr
|2 rdacarrier
|
| 500 |
|
|
|a "Major Subject: Mechanical Engineering"
|
| 500 |
|
|
|a Title from author supplied metadata (automated record created 2011-08-09 15:09:44).
|
| 502 |
|
|
|b Master of Science
|c Texas A&M University
|d 2010
|o http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-7711
|
| 504 |
|
|
|a Includes bibliographical references.
|
| 516 |
|
|
|a Text (Thesis)
|
| 520 |
3 |
|
|a This project investigated a miniature, hourglass-shaped actuator (MHA) and how its geometry affects performance. A custom, self-contained, finite-element simulation code predicts how each MHA deforms when pressurized internally. This analysis describes the MHA geometry's effects on four characteristics: a) work density b) mechanical advantage, c) work advantage and d) percent elongation. The first three characteristics are compared to a traditional actuator operating at the same pressure and elongation. A finite-element modeling code was tailored to study the MHA at 5 MPa internal pressure when 1) MHA height and side-wall thickness are constant and side-wall arc length varies; 2) MHA side-wall arc length and thickness are constant and the height varies; and 3) MHA side-wall thickness varies while height and side-wall arc length are fixed. Case 3 was studied using the MHA geometry with the highest work density found in either condition 1 or 2. Peak mechanical advantage, 6.47, occurs in a constant height MHA--Case 1--when the side-wall arc length is shortest. Highest elongation, 8.67%, occurs in the Case 1 MHA with the longest side-wall arc length. Finally, under Case 3, work density reaches 0.434 MJ/m³ when the side-wall thickness is 1.9 mm. The MHA has potential for active structures because its work density is high--higher than traditional actuators with the same elongation. Their small elongations limit their use; however, much work remains to determine how MHAs might be arranged in a useful array. Never the less, morphing airfoils and other active structures might benefit from embedded MHAs.
|
| 500 |
|
|
|a Electronic resource.
|
| 650 |
|
4 |
|a Major mechanical engineering.
|
| 653 |
|
|
|a Morphing Structure
|
| 653 |
|
|
|a Miniature Actuator
|
| 653 |
|
|
|a Machine Augmented Composite
|
| 700 |
1 |
|
|a Creasy, Terry S.,
|e thesis advisor.
|
| 856 |
4 |
0 |
|u http://hdl.handle.net/1969.1/ETD-TAMU-2010-05-7711
|z Link to OAK Trust copy
|t 0
|
| 994 |
|
|
|a C0
|b TXA
|
| 948 |
|
|
|a cataloged
|b h
|c 2011/8/22
|d c
|e jlanham
|f 11:58:31 am
|
| 999 |
|
|
|a MARS
|
| 999 |
f |
f |
|s 87b890a5-42bf-34a0-a472-ed51147b5b5d
|i b70ed772-decd-3c24-a403-2c9484215b92
|t 0
|
| 952 |
f |
f |
|a Texas A&M University
|b College Station
|c Electronic Resources
|d Available Online
|t 0
|e 2010 Thesis 1969.1/ETD-TAMU-2010-05-7711
|h Other scheme
|
| 998 |
f |
f |
|a 2010 Thesis 1969.1/ETD-TAMU-2010-05-7711
|t 0
|l Available Online
|