Analyzing positional accuracy and structural efficiency in additive manufacturing systems with moving elements

Abstract

Simulation is a useful tool for designing and analyzing the characteristics of a system being investigated. In this investigation, modal simulation and harmonic response analysis are performed to predict the dynamic characteristics of an additive manufacturing (AM) machine. The values of the natural frequency, as well as the vibration mode and the compliance of the AM machine obtained from the simulation results, are used to investigate the structural behavior of the AM machine. Modal analysis is important because it assists in detecting the natural frequencies and modes of a structure, which is important for investigating structural behavior. In addition to model analysis, we perform harmonic response and static structural analyses of the AM machine using the ANSYS software. To compare the real-time vibrational deformation with the analysis results, we conduct an impact test on the AM machine. The first-order, second-order, and third-order frequencies obtained during Modal Analysis are 25.5, 35.3, and 45.5 Hz. The first three orders of frequencies obtained from the modal test are 22.5, 31.3, and 49.4 Hz. The first three order error percentages based on the analysis results are 13.3 %, 12.7 %, and 7.8 %. The modal assurance criteria (MAC) analysis is also done by comparing with experimental model analysis (EMA) results in ME'scope. By offering insightful information, our study will help AM systems with moving parts operate more structurally efficiently and with greater positional accuracy. The results have been supported by data and graphs of the analyzed specimen.

Keywords

• Additive manufacturing
• Finite element method
• Modal analysis
• Harmonic analysis
• Impact hammer modal test