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Simulation of shot peening
2003 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Shot peening is a well-known method to introduce residual stresses in surfaces of aero-engine parts. The aim with this method is to increase the lifetime for parts that are exposed for high cyclic loads. The objective of this thesis is to develop and evaluate a numerical method for introducing resiudal stresses. The main assignment is to simulate shot peening with the finite element method. Two different kinds of models were simulated, one 2D-axi-symmetric model, which is compared to a theoretical model, and one 3D model which is compared to experimental results. The 3D model includes multiple shots and predicts the Almen arc height for different inlet velocities with S-110 shots. The 2D-axi-symmetric model model shows good correlation with Hertz impact theory but the 3D model doesn't predict the Almen arc height compared to experimental result.

Place, publisher, year, edition, pages
2003.
Keyword [en]
Technology, kulbombning, kulpening, shot peening, peening, residual, stress, restspänning
Keyword [sv]
Teknik
Identifiers
URN: urn:nbn:se:ltu:diva-42346ISRN: LTU-EX--03/017--SELocal ID: 05d11bc5-2c5c-4ef0-a3a8-5f1992342a2dOAI: oai:DiVA.org:ltu-42346DiVA: diva2:1015566
Subject / course
Student thesis, at least 30 credits
Educational program
Mechanical Engineering, master's level
Examiners
Note
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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