Time stability of the dynamic behaviour of a 3D-printed airless wheel by stereolithography

Authors

  • Alessandro Annessi Universit√† Politecnica Delle Marche
  • Antonino Quattrocchi
  • Simone Pasinetti
  • Milena Martarelli
  • Paolo Chiariotti
  • Paolo Castellini
  • Gianluca Rossi
  • Roberto Montanini

DOI:

https://doi.org/10.21014/actaimeko.v12i4.1693

Keywords:

lattice structures, additive manufacturing, finite element modeling, modal analysis, dynamic characterization

Abstract

In this paper, the dynamic behavior of an airless wheel made by additive manufacturing is investigated. A lattice geometry is chosen as the cyclic pattern from which the wheel is built. Initially, a linear numerical model is used to preliminarily assess resonance frequency and mode shapes of the wheel. Afterwards, specimens were tested twice, in August 2020 and after six months, highlighting a relevant frequency and damping shift in the vibrational response. To better understand the reason behind the change over time in the wheel dynamic behavior, dedicated structural dynamics tests at varying temperature and humidity set points were performed in an environmental chamber, consisting in measuring the wheel vibrational response when subjected to temperature and humidity variation.

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Published

2023-12-21

Issue

Section

Research Papers