Double‐stage Optimization of Truss and Frame Structures

AbstractComprehensive optimization of truss and frame structures is intended to optimize all aspects of a structure: the topology, shape and size of members. However, simultaneous optimization of all mentioned aspects increases the complexity of the problem and leads to high demands for the used optimization algorithm. We propose to decompose the optimization task and to use specialized algorithms for each stage of the process. First, a phase field model evolves the topology as basic design. Then, we use an interface to set up a simplified beam model, where connection topologies and nodal positions as well as cross sections are simultaneous optimization parameters of the Evolutionary Algorithm.