Design and 3D printing of reconfigurable structures

Bi-stable structure is the fundamental form of reconfigurable structure. The basic application of bi-stable structure is light switch which can be triggered on or off position. The degree of freedom is zero at all time. The state change is due to buckling of one of the members as force advances. The...

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Main Author: Win, Sanda Moe
Other Authors: Huang Weimin
Format: Final Year Project
Language:English
Published: 2014
Subjects:
Online Access:http://hdl.handle.net/10356/61963
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-619632023-03-04T18:50:01Z Design and 3D printing of reconfigurable structures Win, Sanda Moe Huang Weimin School of Mechanical and Aerospace Engineering DRNTU::Engineering::Mechanical engineering Bi-stable structure is the fundamental form of reconfigurable structure. The basic application of bi-stable structure is light switch which can be triggered on or off position. The degree of freedom is zero at all time. The state change is due to buckling of one of the members as force advances. Therefore the anticipated member cannot be too stiff to deter the functionality nor too weak as it might adapt permanent deformation. The stability of bi-stable structure is verified by Grubler’s criterion. The geometry of linkage members and joints are calculated to define clearance along the flexing path. Upon achieving successful pin joint bi-stable concept, consideration of adapting into fully compliant design is analysed. The golden rule of compliant joint is to have least material at the designated region to allow flexure without much resistance. Two fabrication methods, moulding and 3 dimensional printing (3DP), are deployed to compare the production duration and complexity. Eventually, 3D printing is used for the final product fabrication and different methods to feed into 3D printer are also explored. The problems encountered during 3D printing are presented for precaution to be taken in future design project. The limitations of the project are later on described and recommendations for future work are elaborated with example. Bachelor of Engineering (Mechanical Engineering) 2014-12-12T04:49:47Z 2014-12-12T04:49:47Z 2014 2014 Final Year Project (FYP) http://hdl.handle.net/10356/61963 en Nanyang Technological University 59 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Mechanical engineering
spellingShingle DRNTU::Engineering::Mechanical engineering
Win, Sanda Moe
Design and 3D printing of reconfigurable structures
description Bi-stable structure is the fundamental form of reconfigurable structure. The basic application of bi-stable structure is light switch which can be triggered on or off position. The degree of freedom is zero at all time. The state change is due to buckling of one of the members as force advances. Therefore the anticipated member cannot be too stiff to deter the functionality nor too weak as it might adapt permanent deformation. The stability of bi-stable structure is verified by Grubler’s criterion. The geometry of linkage members and joints are calculated to define clearance along the flexing path. Upon achieving successful pin joint bi-stable concept, consideration of adapting into fully compliant design is analysed. The golden rule of compliant joint is to have least material at the designated region to allow flexure without much resistance. Two fabrication methods, moulding and 3 dimensional printing (3DP), are deployed to compare the production duration and complexity. Eventually, 3D printing is used for the final product fabrication and different methods to feed into 3D printer are also explored. The problems encountered during 3D printing are presented for precaution to be taken in future design project. The limitations of the project are later on described and recommendations for future work are elaborated with example.
author2 Huang Weimin
author_facet Huang Weimin
Win, Sanda Moe
format Final Year Project
author Win, Sanda Moe
author_sort Win, Sanda Moe
title Design and 3D printing of reconfigurable structures
title_short Design and 3D printing of reconfigurable structures
title_full Design and 3D printing of reconfigurable structures
title_fullStr Design and 3D printing of reconfigurable structures
title_full_unstemmed Design and 3D printing of reconfigurable structures
title_sort design and 3d printing of reconfigurable structures
publishDate 2014
url http://hdl.handle.net/10356/61963
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