An international conference connecting people
in CAD research, education and business
Bookmark and Share
Copyright (C) CAD Solutions, LLC. All rights reserved.
Proceedings of CAD'16, 2016, 76-80
Truss-like Structure Design with Local Geometry Control

Jikai Liu, Yongsheng Ma, University of Alberta

Abstract. Truss and truss-like structure design has been actively investigated in the past three decades for its broad application scope, and the most popular approach is the ground structure method which can be tracked back to. With this method, a dense grid is initially generated and the nodes are mutually connected to form the input ground structure. Cross-section area of each beam is applied as the design variable, and it could approach to zero value which means a topological change. A review about early developments of the ground structure method can be found in, and an educational Matlab program can be found in. Even though intensively investigated, there are still drawbacks about the ground structure method that: the optimized solutions tend to employ complex topology; the result optimality is dependent on the initial guess and therefore extremely dense grid is generally required for the input ground structure; in addition, the optimized solution may be impractical because only selected sizes of the beams are available in reality.

Keywords. Truss-like Structure, Shape Optimization, Topology Optimization, Local Geometry Control

DOI: 10.14733/cadconfP.2016.76-80