David Rasner, Animation 3

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

01 Design StrategyPage 1/2


1.1 Design ideas

NO NO NO

01 Design StrategyPage 2/2


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


1.3 Analysis

01 Design AnalyisChecking requirements


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




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



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


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.

:(


03 Strategy ADensity Distribution


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



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

MAYBE

Too long



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



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

NO



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

YES



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

David Rasner, Animation 3

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