Prestressed gridshell structures
Paper in proceedings, 2017

This paper describes a method for the form finding of shell structures composed of both compression and tension members which may lie in one layer or two layers. The length of some of the members can be constrained to a fixed length yielding some control of the resulting form found shape. The form finding is accomplished by adjusting the nodal positions until an equilibrium state is reached using dynamic relaxation. If part of a structure is unstable due to compression forces, then a negative mass must be used in the dynamic relaxation. The length constraint is met by adjusting the force density during form finding, again using dynamic relaxation. Finally, case studies are presented where the applied load and the prestress is used to govern the form found shape.

prestress

dynamic relaxation

shell structures

form finding

force density

Author

Alexander Sehlström

Architecture and Civil Engineering

Mats Ander

Chalmers, Applied Mechanics, Material and Computational Mechanics

Christopher John Kenneth Williams

Architecture and Civil Engineering

Paul Shepherd

Proceedings of the IASS Symposium 2017

Subject Categories

Architectural Engineering

Geometry

More information

Created

10/8/2017