rena li 583008 sketchbook

AIR | SKETCHBOOKRENA LI 5830082014 | S1

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Using lofting, a curved surface can be generated easily from 3 basic lines. Changing control points along curves can alter the lofted surface.

Using contouring and lofting, lofted surface can be divided equally and form vertical lofted planes.

Using grasshopper to loft surface is something new to me. It could be useful for form generation in later stage.

LOFT + CONTOUR

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Using data from weather report, curves are formed and then further developed into different shapes.

Data visualizing converts data to visual information. For this section, parametric modeling has been mentioned frequently. Parameters can be established by inputting site context data into grasshopper. Then design could be developed by altering parameters.

Loft

Contour

Grid

DATA VISUALIZING

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Using geodesic command, a series of polylines could be formed on lofted surface.

Forming polylines on curved surface could be useful for fabrication. It is easier to cut out and assemble together. Also, creating polylines on curved surface would allow more design options to be happened.

Gridshell on lofted surface

Grasshopper commands

GRIDSHELL CREATION

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Loft + MorphRANDOM TRIALS

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Create Voronoi 3D

Create OcTree

PART B | SKETCHBOOK

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GRIDSHELLIn gridshell formation, shift command is always used. I tried to apply it to lofting.

Normal lofting

Lofting after shift

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PATTERNING + LISTChanging partition and cull command can give interesting patterns.

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FIELDS MANIPULATIONChange the strength of field gives interesting pattern on surface.

Patterns on plan

Patterns on lofted surface

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EVALUATING FIELDChange the strength of field gives interesting pattern on surface.

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EVALUATING FIELDApart from forming patterns on surface, they can be extruded in various direction.

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GRAPH CONTROLLERChange type of graph gives different result.

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IMAGE SAMPLERPattern reflects the image.

Patterns with different size of circle

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FRACTAL TETRAHEDRALarge pyramid with small pyramids at corners.

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KANGAROO EXPLORATIONChange in rest length

Rest length = 10

Rest length = 30

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Rest length = 50

Rest length = 70

Higher the rest length, more relaxed the form is.

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KANGAROO EXPLORATIONChange in anchor points

Anchor point at the end of arms Anchor point along the arms

Anchor point around the geometry Anchor point at specific location

More anchor points on the geometry, less deformation to the form.

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KANGAROO EXPLORATIONChange in stiffness

Stiffness = 10 Stiffness = 50

Change in stiffness won’t affect the form.

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APPLICATION TO ITERATIONSUse data structure, patterning and kangaroo techniques to iterations

Pattern 1 on curved surface

Pattern 2 on curved surface

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Pattern 3 on lofted surface

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PANELING ON MESHmesh - surface - panelAfter relaxation in Kangaroo, surface becomes mesh. It is very difficult to panel on mesh. Mesh needs to convert to surface by lofting and further paneling on it.

Mesh Surface

Panel surface

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WIND STIMULATIONUsing kanagaroo, effect of wind can be visualized

MD slider on top controls the weind velocities while the slider at the bottom controls the flexibility of panels.

Defintion for wind stimulation

Before relaxation After relaxation

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PART C | SKETCHBOOK

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DIGITAL FORM CONSTRUCTION

CONTOUR

LOFTCURVE

1. With reference to site analysis, curved lines were created in rhino and loft into this form. Curves need-ed to rebuild with different control points to achieve the most satisfactory result.

2. The digital form was then scaled and capped the top part to prepare for contouring later.

CAP HOLESCALE

3. The form was then divided into parts by contouring. Some contoured lines were further away from other lines to create different spatial expereince.

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LOFT(main structure)

4. The main structure was placed at different spots. The profile of I-beam was drawn manually and then lofted along the contoured lines.

DIVIDE CURVE

5. Lines between the main structure were divided into equal distances and joined the points together

LINE

6. XY PLANES were created at the intersection points. The panels were created beforehand and inputted as geometry. They were being morphed on the xy planes.

XY PLANE

GEOMETRY(panels)

BOX MORPH

Panels to be morphed on the xy plane.

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LOFT CONTOUR

DIVIDE CURVELINEXY PLANEBOX MORPH

GEOMETRY(panels)

CURVE CAP HOLESCALE LOFT(main structure)

FINAL DIGITAL FORM

Overall definition

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TAKE IT FURTHERAfter the final presentation, the form has been resolved based on the old one.

1. The new form is based on the contour lines of the old form.

2. The contour lines have been adjusted into linear lines. The spacing of the main frame is smaller and SHS is used. The frame is done by lofting along the new contour lines. The frame is then divided up into equal portion. Lines join the points together. A rectangular tube is created by lofting along the lines to form the secondary structure.

DIVIDE CURVELOFT

CURVE

LINE LOFT

3. Lines along the secondary structure are further divided. XY plane is formed at the intersection of lines. Panels are then morphed on it.

DIVIDE CURVE XY PLANE

GEOMETRY(panels)

BOX MORPH