Shape exploration of designs in a style: Toward generation of product designs

Prats, Miquel; Earl, Christopher; Garner, Steve; Jowers, Iestyn

doi:10.1017/s0890060406060173

Cited by 28 publications

(20 citation statements)

References 25 publications

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“…The work of Chau et al (2004) for the creation of CocaCola bottles and Head & Shoulders packaging; the kettle grammar developed by Prats et al (2006); the ultrasound transducer handle grammar (Culbertson 2012); and the tableware grammar (Castro e Costa and Duarte 2013) fit this description.…”

Section: Industrial Design Applicationsmentioning

confidence: 95%

A Grammar-Based Model for the Mass Customisation of Chairs: Modelling the Optimisation Part

2015

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This research presents a methodology to develop and implement a generative design system as the technological model for mass customisation in the furniture industry. The generative design system comprises two subsystems that permit the generation and the evaluation of customised designs within a predefined design language. The shape generation subsystem is defined by shape grammars and parametric design models. The shape evaluation subsystem encompasses simulation and optimisation to guarantee the structural feasibility of the customised designs under operating conditions. This paper focuses on the modelling activities regarding the constitution of the optimisation part of the shape evaluation subsystem. Structural optimisation using simulated annealing is applied to assist the designer in the automatic search for an optimal grammar-based detailed solution. The theoretical model is illustrated by its application to a symbolic mass production problem: Thonet bentwood chairs, which were changed to comply with the mass customisation paradigm.

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Section: Industrial Design Applicationsmentioning

confidence: 95%

A Grammar-Based Model for the Mass Customisation of Chairs: Modelling the Optimisation Part

2015

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“…But, the shapes are all distinct from each other because of the different spatial relation between the two squares. Shape grammars often make use of such relations through applications of shape rules which produce repetition of form and arrangement and can result in visually cohesive patterns, or designs consistent with a particular style [9]. The spatial relations used in a shape grammar are typically fixed, or for parametric shape grammars are instantiated during application of a shape rule.…”

Section: Kinematic Shapesmentioning

confidence: 99%

Defining Rules for Kinematic Shapes with Variable Spatial Relations

Harrison

Jowers

Earl

2019

Communications in Computer and Information Science

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Designing mechanisms can be a challenging problem, because the underlying kinematics involved are typically not intuitively incorporated into common techniques for design representation. Kinematic shapes and kinematic grammars build on the shape grammar and making grammar formalisms to enable a visually intuitive approach to model and explore mechanisms. With reference to the lower kinematic pairs this paper introduces kinematic shapes. These are connected shapes with parts which have variable spatial relations that account for the relative motion of the parts. The paper considers how such shapes can be defined, the role of elements shared by connected parts, and the motions that result. It also considers how kinematic shape rules can be employed to generate and explore the motion of mechanisms.

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“…In 'seeing', a rule formalises the perception of a shape by recognising an embedded part, and in 'moving', the rule manipulates the shape according to replacement of the recognised part. Shape computations formalise the interpretations and transformations of shapes that emerge during design exploration; they describe the process as a formal protocol of rule applications, and a set of rules formalises a potential design space according 4 to a shape grammar (Prats et al, 2006). When implemented in a computational system, such as Jowers and Earl (2011) and Jowers et al (2013), shape grammars enable designers to actively explore a design space by generating designs via rule applications.…”

Section: Formalising Creative Designmentioning

confidence: 99%

Exploration of multi-material surfaces as weighted shapes

MacLachlan

Jowers

2016

Graphical Models

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The introduction of multi-material additive manufacturing makes it possible to fabricate objects with varying material properties, leading to new types of designs that exhibit interesting and complicated behaviours. But, computational design methods typically focus on the structure and geometry of designed objects, and do not incorporate material properties or behaviour. This paper explores how material properties can be included in computational design, by formally modelling them as weights in shape computations. Shape computations, such as shape grammars, formalise the description and manipulations of pictorial representation in creative design processes. The paper explores different ways that material properties can be formally modelled as weights, and presents examples in which multi-material surfaces are modelled as weighted planes, giving rise to flexible behaviours that can be considered in design exploration.Keywords: additive manufacturing, shape computation, design IntroductionAdditive manufacturing is rapidly becoming an essential and ubiquitous process in creative design, and has introduced new possibilities with respect to the types of shapes that can be realised. The technology continues to evolve, and over recent years has introduced variability in material properties alongside variability in form. This is achieved either by colouring material as it is extruded or by combining different materials within one fabricated object. The result is a greater range in the types of objects that can be fabricated, but these advances are not reflected in computational methods used in design. As discussed by Oxman and Rosenberg (2007), computational methods are typically restricted to defining and exploring the structure and geometry of design models, and do not incorporate material properties or behaviour. This research explores how these can be incorporated into shape computations, which have been shown to formalise creative design processes (Prats et al., 2009;Paterson and Earl, 2010), and support generative design (Stiny, 2006). In this paper, the focus is on identifying how the material properties of a surface can be formally modelled. The paper explores mechanisms necessary to support computation with weighted shapes, building on theoretical developments presented Stiny (1992). Ultimately, the aim of the research is to enable the generation and exploration of design models, with reference to material properties and expected behaviour.

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Shape exploration of designs in a style: Toward generation of product designs

Cited by 28 publications

References 25 publications

A Grammar-Based Model for the Mass Customisation of Chairs: Modelling the Optimisation Part

A Grammar-Based Model for the Mass Customisation of Chairs: Modelling the Optimisation Part

Defining Rules for Kinematic Shapes with Variable Spatial Relations

Exploration of multi-material surfaces as weighted shapes

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