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A study of plastic waves during dynamic buckling of ductile slabs

In English

Författare

Summary, in English

Plastic wave propagation is studied during progressive plastic buckling of elastic viscoplastic slabs. The numerical results of the buckling behaviour are studied using two recent approaches for monitoring the plastic wave propagation. One method is a direct geometrical monitoring of the waves using a sequence of smooth approximations (geo-plot). The other method is a contour plot method (q-plot) where contours of the normalized inelastic strain rate are used. The field quantities are obtained using a non-linear finite element method in the analysis of the dynamic viscoplastic buckling problem. The numerical results show that both methods are well suited for describing plastic wave motion and that the simpler q-plot method is fully adequate when addressing the overall qualitative plastic wave propagation in the slabs, whereas the geo-plot method has the ability to more precisely predict inelastic wave speeds.

Avdelning/ar

Publiceringsår

2002

Språk

Engelska

Sidor

569-580

Publikation/Tidskrift/Serie

Modelling and Simulation in Materials Science and Engineering

Volym

10

Issue

5

Dokumenttyp

Artikel i tidskrift

Förlag

IOP Publishing

Ämne

  • Applied Mechanics

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0965-0393