Shear and adiabatic shear failures in an impulsively loaded fully clamped beam

Authors
Citation
Qm. Li et N. Jones, Shear and adiabatic shear failures in an impulsively loaded fully clamped beam, INT J IMPAC, 22(6), 1999, pp. 589-607
Citations number
40
Categorie Soggetti
Mechanical Engineering
Journal title
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
ISSN journal
0734743X → ACNP
Volume
22
Issue
6
Year of publication
1999
Pages
589 - 607
Database
ISI
SICI code
0734-743X(199907)22:6<589:SAASFI>2.0.ZU;2-B
Abstract
An analytical model is proposed for studying the material failure in shear hinges which develop during the dynamic plastic response of beams under imp ulsive pressure loadings. The structural response outside a shear hinge is modelled using a rigid, perfectly plastic theory. However, within the shear hinge, strain hardening, strain rate and temperature effects are considere d in order to obtain the conditions for an adiabatic shearing failure. A cr itical impulsive: velocity is obtained for :Menkes and Opat's beam problem, which describes a transition from a transverse shear failure mode (Mode II I) to an adiabatic shear banding mode with increase of impulse. A similar p rocedure is used to examine circular plates and cylindrical shells, as well as mass impact problems. (C) 1999 Elsevier Science Ltd. All rights reserve d.