Numerical and experimental analysis of rotors with geometric periodicity and additive manufacturing

• Grant number: 19/18095-4
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: October 01, 2019
• End date: July 31, 2020
• Field of knowledge: Engineering - Mechanical Engineering - Mechanical Engineering Design
• Principal Investigator: Rodrigo Nicoletti
• Grantee: Rhamy Salim Bachour
• Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
• Associated research grant: 18/15894-0 - Periodic structure design and optimization for enhanced vibroacoustic performance: ENVIBRO, AP.TEM

Abstract

In this work, we study the dynamic behavior of rotors built by additive manufacturing (3D printing). First, we design and test them experimentally in a test rig and check their unbalance response. Second, we adjust a mathematical model according to the experimental data. With this model, we design a rotor with geometric periodicity and test it experimentally. The geometric periodicity introduces interesting dynamic characteristics in the system, such as bandgaps in the frequency response, which is quite important to light rotating systems as the ones built by additive manufacturing.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

BACHOUR, RHAMY SALIM; NICOLETTI, RODRIGO. Natural Frequencies and Band Gaps of Periodically Corrugated Beams. JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME, v. 143, n. 4, AUG 1 2021. (19/18095-4, 18/15894-0)