M. Mateos  F. Cortés  L. Aretxabaleta      

Anales de la Mecánica de la Fractura, nº 27 . 2010 . Pág. -
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Resumen: This communication presents an elasto-viscoplastic contact model of an impact-indentation test by means of fractional calculus. The models aims at characterising this contact by a rheological model based on the superposition in series of a dashpot and a non linear spring. The dashpot gives the dissipative character and the superposition in series the permanent character of the strains. Finally, the spring gives the non linear stiffness based on Hertz theory. The model treatment is achieved by fractional calculus, which is solved numerically using G1 method. Then, the results are compared with those obtained from experimental tests. Finally, material properties have been obtained from the contact characterisation.

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Department of Mechanical Engineering and Industrial ManufacturingMondragon Unibertsitatea, Loramendi 4, 20500, Mondragón, Spain. Phone: (+34) 943794700. Fax: (+34)943791536.
Department of Mechanical Engineering and Industrial ManufacturingMondragon Unibertsitatea, Loramendi 4, 20500, Mondragón, Spain. Phone: (+34) 943794700. Fax: (+34)943791536.
Department of Mechanical Engineering and Industrial ManufacturingMondragon Unibertsitatea, Loramendi 4, 20500, Mondragón, Spain. Phone: (+34) 943794700. Fax: (+34)943791536.