David Rasner, Animation 3

David Rasner (r0826035) for 3D Modelling and Animation III, S2015

01

Design Strategy Page 1/2

David Rasner (r0826035) for 3D Modelling and Animation III, S2015

1.1 Design ideas

NO

NO

NO

01

Design Strategy Page 2/2

David Rasner (r0826035) for 3D Modelling and Animation III, S2015

1.2 Design ideas

• 4 Anchor ground points, 1 Anchor top point • Rectangle a x b; b = 2 a • Min. hight (headspace) = 2.50 m • Area inside blue line: min. 70% of the rectangle a x b • Height h of the top point: h, max = a • Min. Volume between rectangle a x b and membrane = 500 m3 • Can drain rain-water

Maybe

Yes

01

Design Analyis Checking requirements

1.3 Analysis

David Rasner (r0826035) for 3D Modelling and Animation III, S2015

01 1.3 Load

Design Analyis Checking requirements

David Rasner (r0826035) for 3D Modelling and Animation III, S2015 Problem: Karamba (trial) wont let me use high resolution meshes (object number limit) and low resolution meshes behave differently (weird).

In Nastran (Autodesk): Material Model? Isotropic? Orthotropic?

No idea (a little bit above my paygrade).

02

Strategy A Crossection Optimization

2.1 Utilization analysis

David Rasner (r0826035) for 3D Modelling and Animation III, S2015

2.3 Deformation (optimized result, standard profiles only)

2.5 Various scenarios (standard profiles only)

- Compression

- Tension

2.2 Material setup Steel Cable

2.4 Element mass (optimized result, standard profiles only)

2.5.1 All steel, uniform (beams grouped) optimization, deformation ≤ 10cm: Mass:

1869.71 Kg

Displacement:

4.391 cm

2.5.2 All steel, independent element optimization, deformation ≤ 10cm: Mass:

827.23 Kg

Displacement:

6.376 cm

2.5.5 Steel and wood, uniform (beams grouped) optimization, deformation ≤ 10cm: Mass:

582.61 Kg

Displacement:

7.256 cm

2.5.5 Steel and wood, independent element optimization, deformation ≤ 10cm: Mass:

368.10 Kg

Displacement:

9.895 cm

Wood

NUMBER TO BEAT

02

Strategy A Parametric model with a fitness function.

David Rasner (r0826035) for 3D Modelling and Animation III, S2015

2.6 Generation 2 (optimized result, standard profiles only) utilization analysis

2.5 Starting point Point allowed to move in a plane Point anchored

Relative Coordinates = gene pool (Genom) Evolutionary Solver MINIMIZE!

Assembly mass = fitness Karamba’s OptiCroSec Compontet

Mass:

368.10 Kg

Mass:

246.68 Kg

Displacement:

9.895 cm

Displacement:

2.866 cm

2.7 Generation 2 (optimized result, standard profiles only) displacement analysis

02

Strategy B Density Distribution

2.6 Density distribution analysis

David Rasner (r0826035) for 3D Modelling and Animation III, S2015

2.7 Karamba Model (optimized result, standard profiles only) utilization analysis Mass:

269.672 Kg

Displacement:

2.731 cm

In terms of weight, it’s more or less the same as the second generation in strategy 1

2.8 Most plausible approach: Density optimised microtrusses

THESIS:

How to, density optimised microtruss: STEP #1: Triangulation of a density distribution map.

BUT:

PROBLEM #1: The tools available to me do not produce high enough resolution maps.

PROBLEM #2: Karamba student license limits the beam number to 82, not enough. :(

STEP #2: Removing all unnecessary elements (tension/compression eliminator), leaving a leigthweight, density optimized microtruss structure.

03

Strategy A Density Distribution

David Rasner (r0826035) for 3D Modelling and Animation III, S2015

3.1 Design ideas, 1: No need to reinvent the wheel (edge length analysis)

3.1 Design ideas, 2: Arch truss (edge length analysis)

MAYBE 3.1 Design ideas, 3: Arch truss 2 (edge length analysis)

MAYBE 3.1 Design ideas, 4: ~1m Triangles (laplacian smoothing)

MAYBE

MAYBE

03

Strategy A Density Distribution

David Rasner (r0826035) for 3D Modelling and Animation III, S2015

3.1 Design ideas, 5: 1: Force Feltingdistribution optimization in 3D (better Software)

Too long

MAYBE

03

Strategy A Density Distribution

David Rasner (r0826035) for 3D Modelling and Animation III, S2015

3.1 Design ideas, 6: Felting optimization (edge length analysis)

3.1 Design ideas, 7: Truss along two catenary curves (edge length analysis)

NO 3.1 Design ideas, 6: Felting optimization, Karamba Model (displacement)

NO

03

Strategy A Density Distribution

David Rasner (r0826035) for 3D Modelling and Animation III, S2015

3.1 Design Analysis, 3.2 ideas, 1: Felting option optimization 5 (wide flange 140). Axial stress (top), displacement (bottom).

NO

03

Strategy A Density Distribution

David Rasner (r0826035) for 3D Modelling and Animation III, S2015

3.1 Design Analysis, 3.2 ideas, 1: Felting option optimization 5 (DIN I 100). Axial stress (top), displacement (bottom).

YES

03

Strategy A Density Distribution

3.1 Design Analysis, 3.2 ideas, 1: Felting option optimization 5 (DIN I 100).

David Rasner (r0826035) for 3D Modelling and Animation III, S2015