Determination of the dynamical behaviour of biological materials during impact using a pendulum device

Van Zeebroeck, M.; Tijskens, E.; Van Liedekerke, P.; Deli, V.; De Baerdemaeker, J.; Ramon, H.

doi:10.1016/S0022-460X(03)00579-0

Title

Determination of the dynamical behaviour of biological materials during impact using a pendulum device

Author

Van Zeebroeck, M.

Tijskens, E.

Van Liedekerke, P.

Deli, V.

De Baerdemaeker, J.

Ramon, H.

Abstract

A pendulum device has been developed to measure contact force, displacement and displacement rate of an impactor during its impact on the sample. Displacement, classically measured by double integration of an accelerometer, was determined in an alternative way using a more accurate incremental optical encoder. The parameters of the Kuwabara-Kono contact force model for impact of spheres have been estimated using an optimization method, taking the experimentally measured displacement, displacement rate and contact force into account. The accuracy of the method was verified using a rubber ball. Contact force parameters for the Kuwabara-Kono model have been estimated with success for three biological materials, i.e., apples, tomatoes and potatoes. The variability in the parameter estimations for the biological materials was quite high and can be explained by geometric differences (radius of curvature) and by biological variation of mechanical tissue properties. (C) 2003 Elsevier Ltd. All rights reserved.

Language

English

Source (journal)

Journal of sound and vibration / University of Southampton. Institute of Sound and Vibration Research. - London

Publication

London : 2003

ISSN

0022-460X

DOI

10.1016/S0022-460X(03)00579-0

Volume/pages

266 :3 (2003) , p. 465-480