2022-04497 - Research internship - Exploring waveguiding phenomena for ropeway transport
Contract type : Internship agreement
Level of qualifications required : Master's or equivalent
Fonction : Internship ResearchContext
Background : Noise Vibration & Harshness (NVH) are a major industrial and scientific issue due to their economic, technological and ecological implications. In the transport sector, which is particularly affected and where safety and comfort are essential criteria, many technologies have the sole objective of controlling the transmission of noise and vibrations, which can take place by ground-borne or air-borne means. In ropeway transport (e.g. cable cars), the main source of vibration transmission is caused by the propagation of elastic waves in the cables. The consequences are significant in terms of comfort in the cabins, surrounding noise, then in terms of wear and tear on the infrastructure. The transmission mechanisms of these vibrations are still not well understood, due to the wave nature of the phenomena and the complexity of the associated dynamic models.
Description of the internship : This internship will take place within the I4S team of the Inria center at the University of Rennes. In particular, we are developing ultra-fast numerical methods to predict the wave and vibro- acoustic response of structures with complex geometry (composites, periodics, multi-scale, etc.). The applications cover the fields of guided wave inspection, the design of metamaterials and their vibro-acoustic optimization. These tools have already led to the discovery of several remarkable phenomena in waveguides and periodic structures. The internship, in collaboration with the company POMA, will aim to apply a numerical method for the analysis of the wave and dynamic response of a cable transport system. Experimental data will be collected in order to establish a relevant substructure finite element model in mid-frequency dynamics. These digital models will provide an unprecedented perspective on the underlying physics and will allow the creation of new indicators of design, optimization and vibration control. PhD opportunities can be considered at the end of the internship.
Keywords : Computational Mechanics or Acoustics, Waves, Civil Engineering, Cable Modelling, Finite Element Method.Skills
Theme/Domain : Optimization and control of dynamic systems Scientific computing (BAP E)
Town/city : Rennes
Inria is the French national research institute dedicated to digital science and technology. It employs 2,600 people. Its 200 agile project teams, generally run jointly with academic partners, include more than 3,500 scientists and engineers working to meet the challenges of digital technology, often at the interface with other disciplines. The Institute also employs numerous talents in over forty different professions. 900 research support staff contribute to the preparation and development of scientific and entrepreneurial projects that have a worldwide impact.Instruction to apply
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