Interactive Topology Optimization with Hybrid Truss and Continuum Elements Types

Abstract

Topology optimization is a rising tool in structural design that can improve material efficiency and promote sustainability. However, currently topology optimization is not greatly used in the industry due to the nature of its user-unfriendly, high computation cost and difficulty in manufacturability. This thesis proposes a new framework combining traditional discrete topology optimization with truss elements and continuum elements topology optimization in creating a more informed algorithm suitable for more practical design scenarios. In addition, the drawing toolkit is also introduced in helping users better interact with the system in outputting their desired outcome. The hybrid element type topology optimization is achieved by creating separate local stiffness matrices and mapping them respectively to the same global design space to perform optimization together. The interactive drawing functions are used as add-in truss members that users can select the amount and draw in the length and locations of them in the design space. This framework is tested on multiple topology optimization classic problems including cantilever beam with bracings and MBB beam. All draw-in truss hybrid topology optimized results show a more efficient design results with lower compliance and overall lower material quantity.