DIGITAL DESIGN + FABRICATION SM1, 2016 M1 JOURNAL - Umbrella Xinyue Wu
752748 Tutor:Lyle Group 12
1
Measured Drawings
Scale:1:10 2
Measured Drawings
Scale:1:10 3
Measured Drawings The telescopic umbrella consists 1 stretcher and 8 ribs with fabric attached on it and it can automatic release and close. I measure the umbrella by using masking tape and metal ruler. I study both the release and close status of the umbrella. Umbrella is central symmetric Thus I just need to measure the length of 1 set of rib( which consist 5 parts) and the overall length.
4
Analysis
Expandable
Pin Joint Ribs rotate around the pin joint and the angles between ribs can easily change.
Rotate Tension
Mechanism
Tension
Support Support
5
Analysis c
Telescoping:
The main pole of umbrella consisting three tubes (inside another)with similar diameters is telescoping and it can be shorten and extended.
Expandable Mechanism
Once one of the ribs is under stress, the force can transfer to another rib. Thus the systematic moverment is drived.
Fabrie Skin)
Stetcher(Bone)
6
The fabric is tightened up by the tensile force of stretchers .
Analysis
7
Digital Model
8
9
Sketch Model
The sketch models foccus on the different shapes and space formed by ribs connected by pin joints.
10
11
Sketch Design #1
Adjustable personal space By analyzing the skin and bone system, I realize that the idea of expandable mechanism can be used in my design. In different situation, different sizes of personal space are required. In my design concept , the base frame of the object in octagon shape sits on shoulder and there are eight adjustable sets of ribs on each angles of the base frame. These sets of ribs can both fold and extend. Finally, the adjustable ribs and covering membranes can form the adjustable and foldable bubbles like personal space.
12
Sketch Design #2 Tensegrity system
The design focuses on the interaction between skins and bones. According to the analysis above, strings(skin) are tightened on the member bars. The member bars sit on the elbow joint , shoulder, chest ,crotch and neck. When personal space is needed, the users can ac arms and the strong protection is formed. On the basis of the skin and bone system, I explore the tensegrity system and the idea apply to my design.
13
Sketch Design #3
I consider about ‘push others away’ instead of ‘protect myself ’. The skeleton is formed by triangles with different angles with the fabric on it. The skeleton is connected by pin joints and is adjustable. Thus the pointed skeleton can be aggressive and ‘ask’ other to stay away.
14
Appendix
15
16