A note on a ‘velocity sensitive’ energy-absorbing structure
- 1 January 1989
- journal article
- Published by Elsevier BV in International Journal of Impact Engineering
- Vol. 8 (1), 43-51
- https://doi.org/10.1016/0734-743x(89)90030-4
Abstract
Based on a rigid-viscoplastic constitutive relation and a four-hinge model, this paper analyses the large deformation process of a typical ‘velocity sensitive’ energy-absorbing structure proposed by Calladine and English [Int. J. Mech. Sci.26, 689–701 (1984)]. By neglecting elastic effects, our plastic impact model shows that the velocity sensitivity is closely related to the instantaneous energy loss at the moment of impact, and that the mass ratio plays a principal role in this dynamic process. To examine this model, computing results are given and compared with the experimental ones reported by Calladine and English, while the significant effect of the ‘initial geometrical imperfection’ on the ‘velocity sensitivity’ is emphasized.Keywords
This publication has 2 references indexed in Scilit:
- Strain-rate and inertia effects in the collapse of two types of energy-absorbing structureInternational Journal of Mechanical Sciences, 1984
- Experimental and Theoretical Investigation of the Plastic Deformation of Cantilever Beams Subjected to Impulsive LoadingJournal of Applied Mechanics, 1962