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

01 Design StrategyPage 1/2

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

1.1 Design ideas

NO NO NO

01 Design StrategyPage 2/2

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

1.2 Design ideas

Maybe Yes

• 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

01 Design AnalyisChecking requirements

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

1.3 Analysis

01 Design AnalyisChecking requirements

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

1.3 LoadProblem: 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).

NUMBER TO BEAT

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

- Compression

2.1 Utilization analysis

2.2 Material setup

- Tension

Steel Cable

Wood

2.3 Deformation (optimized result, standard profiles only) 2.5 Various scenarios (standard profiles only)

2.5.1Allsteel,uniform(beamsgrouped)optimization,deformation≤10cm:

2.5.2Allsteel,independentelementoptimization,deformation≤10cm:

2.5.5Steelandwood,uniform(beamsgrouped)optimization,deformation≤10cm:

2.5.5Steelandwood,independentelementoptimization,deformation≤10cm:2.4 Element mass (optimized result, stand-ard profiles only)

Strategy ACrossection Optimization

Mass: 368.10 KgDisplacement: 9.895 cm

Mass: 582.61 KgDisplacement: 7.256 cm

Mass: 827.23 KgDisplacement: 6.376 cm

Mass: 1869.71 KgDisplacement: 4.391 cm

02 David Rasner (r0826035) for 3D Modelling and Animation III, S2015Strategy AParametric model with a fitness function.

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

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

Point allowed to move in a plane

Point anchored

Mass: 368.10 KgDisplacement: 9.895 cm

Mass: 246.68 KgDisplacement: 2.866 cm

Relative Coordinates = gene pool (Genom)

Assembly mass = fitness

MINIMIZE!

Evolutionary Solver

Karamba’sOptiCroSecCompontet

02

THESIS: BUT:

Strategy BDensity Distribution

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

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

2.6 Density distribution analysis 2.7 Karamba Model (optimized result, standard profiles only) utilization analysis

2.8 Most plausible approach: Density optimised microtrusses

How to, density optimised microtruss:

STEP #1: Triangulation of a density distribution map.

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

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

PROBLEM #2:Karamba student license limits the beam num-ber to 82, not enough.

:(

Mass: 269.672 KgDisplacement: 2.731 cm

03 Strategy ADensity 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, 3: Arch truss 2 (edge length analysis)

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

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

MAYBE MAYBE

MAYBEMAYBE

03 Strategy ADensity Distribution

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

3.1 Design ideas, 1: Felting optimization3.1 Design ideas, 5: Force distribution in 3D (better Software)

MAYBE

Too long

03 Strategy ADensity 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, 6: Felting optimization, Karamba Model (displacement)

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

NO NO

03 Strategy ADensity Distribution

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

3.1 Design ideas, 1: Felting optimization3.2 Design Analysis, option 5 (wide flange 140). Axial stress (top), displacement (bottom).

NO

03 Strategy ADensity Distribution

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

3.1 Design ideas, 1: Felting optimization3.2 Design Analysis, option 5 (DIN I 100). Axial stress (top), displacement (bottom).

YES

03 Strategy ADensity Distribution

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

3.1 Design ideas, 1: Felting optimization3.2 Design Analysis, option 5 (DIN I 100).