DEVELOPMENT OF AN AUTOMATIC PROGRAM FOR DYNAMICS ANALYSIS OF 3D CONCRETE PRINTER FRAME WITH FLEXIBLE LINKS

Abstract

This article presents the development of an automated program for calculating the dynamics of a large-scale concrete 3D printer frame with flexible links. The calculation program was developed by integrating three modules: Ansys© Parametric Design Language (APDL) code, MSC Adams© code, and MATLAB© code. The Ansys APDL code is used to establish the model of flexible links. The MSC Adams code is utilized to analyze the dynamics of the printer frame. The MATLAB code connects the modules, enabling automatic modification of structural parameters and motion rules of the printer axis. The developed program allows for automated dynamic calculations of the system with flexible links across various design parameters conveniently. Based on this, the effects of some structural parameters of the flexible links (beam cross-sectional dimensions) and kinematic parameters (frequency of motion variation, velocity) on the positional error of the print nozzle trajectory have been calculated, analyzed, and compared to systems with rigid links. Particularly, the simulation time for each set of design parameters has been significantly shortened, from 30-40 minutes (in case manually) to just 3-4 minutes. The research results provide a foundation for optimizing the printer frame design according to structural and dynamic criteria.