Direct methods for limits in plasticity

• Autorzy: Ponter A. R. S. , Chen H. F.
• Języki publikacji: EN

Abstrakty

EN

The paper discusses a methodology for the evaluation of shakedown and ratchet limits for an elastic perfectly plastic solid subjected to mechanical and thermal cycles of loading. The steady cyclic state is characterised by a minimum theorem that contains the classical shakedown theorems as a special case. For a prescribed class of kinematically admissible strain rate histories, the minimum of the functional is found by a programming method, the Linear Matching Method, which converges to the least upper bound. Three examples are given for a finite element implementation, rolling contact on a half-space, the behaviour of a complex heat exchanger and the behaviour of a regular particulate metal matrix composite subjected to variable temperature.

Słowa kluczowe

PL

metody bezpośrednie; metody bezpośrednie dla ograniczeń plastyczności; plastyczność; obciążenia mechaniczne; obciążenia termiczne

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Archives of Mechanics
• Rocznik: 2005
• Tom: Vol. 57, nr 2-3
• Strony: 171--187
• Opis fizyczny: Bibliogr. 20 poz., rys., wykr.

Twórcy

autor

Ponter A. R. S.

• Mathematical Modelling Centre, Department of Engineering, University of Leicester, Leicester, LE1 7RH, UK

autor

Chen H. F.

• Mathematical Modelling Centre, Department of Engineering, University of Leicester, Leicester, LE1 7RH, UK

Bibliografia

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