A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Harmonic form-finding for the design of doubly-curved shells
Abstract Purpose Shell structures are highly efficient and are an elegant way of covering large uninterrupted spaces, but their complex geometry is notoriously difficult to model and analyse. This paper aims to describe a novel free-form shell modelling technique based on structural harmonics. Design/methodology/approach The method builds on work using weighted eigenmodes for three-dimensional mesh modelling in a computer graphics setting and extends it by specifically adapting the technique to an architectural design context. This not only enables the sculpting of free-form architectural surfaces using only a few control parameters but also takes advantage of the synergies between eigenmodes and structural buckling modes, to provide an efficient means of stiffening a shell against failure by buckling. Findings The result is a flexible free-form modelling tool that not only enables the creation of arbitrary doubly curved surfaces but also allows simultan. The tool helps to assist in the design of shells at the conceptual stage and encourages an interaction between the architect and engineer. A number of initiatives, including a single degree of freedom design, boundary constraints, visualisation aids and guidelines towards specific spatial configurations have been introduced to satisfactorily adapt the method to an architectural context. Originality/value The tool helps to assist in the design of shells at the conceptual stage and encourages an interaction between the architect and engineer. A number of initiatives, including a single degree of freedom design, boundary constraints, visualisation aids and guidelines towards specific spatial configurations have been introduced to satisfactorily adapt the method to an architectural context. This paper includes a full case study of the iconic British Museum Great Court Roof to demonstrate the applicability of the developed framework to real-world problems and the software developed to implement the method is available as an open-source download.
Harmonic form-finding for the design of doubly-curved shells
Abstract Purpose Shell structures are highly efficient and are an elegant way of covering large uninterrupted spaces, but their complex geometry is notoriously difficult to model and analyse. This paper aims to describe a novel free-form shell modelling technique based on structural harmonics. Design/methodology/approach The method builds on work using weighted eigenmodes for three-dimensional mesh modelling in a computer graphics setting and extends it by specifically adapting the technique to an architectural design context. This not only enables the sculpting of free-form architectural surfaces using only a few control parameters but also takes advantage of the synergies between eigenmodes and structural buckling modes, to provide an efficient means of stiffening a shell against failure by buckling. Findings The result is a flexible free-form modelling tool that not only enables the creation of arbitrary doubly curved surfaces but also allows simultan. The tool helps to assist in the design of shells at the conceptual stage and encourages an interaction between the architect and engineer. A number of initiatives, including a single degree of freedom design, boundary constraints, visualisation aids and guidelines towards specific spatial configurations have been introduced to satisfactorily adapt the method to an architectural context. Originality/value The tool helps to assist in the design of shells at the conceptual stage and encourages an interaction between the architect and engineer. A number of initiatives, including a single degree of freedom design, boundary constraints, visualisation aids and guidelines towards specific spatial configurations have been introduced to satisfactorily adapt the method to an architectural context. This paper includes a full case study of the iconic British Museum Great Court Roof to demonstrate the applicability of the developed framework to real-world problems and the software developed to implement the method is available as an open-source download.
Harmonic form-finding for the design of doubly-curved shells
Brandt-Olsen, Cecilie (author) / Shepherd, Paul (author) / Richens, Paul (author)
2019-10-19
Brandt-Olsen , C , Shepherd , P & Richens , P 2019 , ' Harmonic form-finding for the design of doubly-curved shells ' , Engineering Computations , vol. 37 , no. 3 , pp. 1073-1091 . https://doi.org/10.1108/EC-12-2018-0557
Article (Journal)
Electronic Resource
English
Buckling , Curvature , Fourier analysis , Free-form surfaces , Harmonics , /dk/atira/pure/subjectarea/asjc/1700/1712 , name=Software , /dk/atira/pure/subjectarea/asjc/2200/2200 , name=General Engineering , /dk/atira/pure/subjectarea/asjc/1700/1706 , name=Computer Science Applications , /dk/atira/pure/subjectarea/asjc/1700/1703 , name=Computational Theory and Mathematics , /dk/atira/pure/sustainabledevelopmentgoals/good_health_and_well_being , name=SDG 3 - Good Health and Well-being
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