Abstract
This article presents the structural analysis and design optimization of the frame of a large-scale 3D concrete printer for construction. A finite element model of the frame of the 3D printer with various operating conditions was established using NX Nastran and Ansys APDL software. The script code for automated calculation of the deflection and natural frequency of the structure was built in the integrated Matlab-Ansys APDL language. The influence of different design parameters on the behavior of the structure is clearly evaluated with the aid of script code. Then, the optimal mathematical model of the X and Z axis structure is built with the criteria of the minimum mass, four constraints, and six variables as design parameters. The problem is solved by the genetic algorithm. Based on the optimal set of parameters and the standard box steel size table, a reasonable design option was selected, with the mass reduced by 70.6 % compared to the design option based on early experience.
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