Eindhoven Technische Universiteit An Experimental Design System for the Very Early Design Stage B....

EindhovenTechnische Universiteit

An Experimental Design System for the Very Early

Design Stage

B. de Vries

A.J. Jessurun

EindhovenTechnische Universiteit

VR-DIS

Projects• Interactive Design

System• Distributed

Multidisciplinary Design

• Interactive Measurement of user Reactions

Scientific Topics• Case Based

Reasoning• Conjoint Models• Design Methodology

and CAD• Feature Based

Modeling• Multi Agent Systems• User Interfaces

EindhovenTechnische Universiteit

Case

• fit spaces• check

requirements• ordering spaces• plan layout• façade

impression• roof shapes

EindhovenTechnische Universiteit

Feature Based Modeling

• Flexibility: Feature Sharing

• Extensibility: Inheritance, Decomposition, Association

• Evolution: Feature Types, Feature Instances

EindhovenTechnische Universiteit

Design Agent: Constraints

1 create interval objects

2 create interval constraints

3 build equations4 solve equations

(Simplex, BiConjugate Gradient)

EindhovenTechnische Universiteit

Space Analysis Tool

• Design Phase: Client Brief - Space Layout• Spaces : Shape = Box• Relationships:

• Space_A adjacent to Space_B• Space_A in Space_B• Space_A on Space_B

• Constraints: Dimension, Position• Relative• Absolute

EindhovenTechnische Universiteit

System Architecture

Feature Model

Scale ModelView

Feature ModelView

RDBMSConstraint

Solver

Geometry Lib.

EindhovenTechnische Universiteit

Step 1: Feature View

• instance building element types (e.g. kitchen)

• instance shape type (=box)

• associate shape to building element

EindhovenTechnische Universiteit

Step 2: Scale Model View

EindhovenTechnische Universiteit

Step 3: Resize Spaces

EindhovenTechnische Universiteit

Step 4: Order Spaces

EindhovenTechnische Universiteit

Step 5: Add Constraints

EindhovenTechnische Universiteit

Step 6: Solve Constraints

EindhovenTechnische Universiteit

Step 7: Fix/Release Positions and Dimensions

EindhovenTechnische Universiteit

Step 8: Evaluate Space Composition

EindhovenTechnische Universiteit

Discussion

• No calculated design solutions, but limiting of the design solution space

• Constraints do not replace grid/snap• Add constraints ‘carefully’• Solve for:

• ordering of spaces• check of implicit/explicit design constraints

EindhovenTechnische Universiteit

Future Developments

• VR - Feature Tool• Generic Design Knowledge (CBR)• User Interface for Geometric

Manipulations• Materialization of Space Boundaries• Creation of Structural Elements in

Spaces