Activities per year
Abstract
Based upon the kinematic theorem of Koiter, the Linear Matching Method (LMM) procedure has been proved to produce very accurate upper bound shakedown limits. This paper presents a recently developed LMM lower bound procedure for shakedown analysis of structures with temperaturedependent yield stress, which was implemented into ABAQUS in the sameprocedure of upper bounds. According to the Melan's theorem, a direct algorithm has been carried out to determine the lower bound of shakedown limit using the best residual stress field calculated during the LMM upper bound procedure with displacementbased finite elements. By checking the yield condition at every integration point, the lower bound is calculated by the obtained static fieldat each iteration, with the upper bound given by the obtained kinematic field. A number of numerical examples confirm the applicability of this procedure and ensure that the upper and lower bounds are expected to converge to the accurate solution after a number of iterations.
Original language  English 

Publication status  Published  26 Jul 2009 
Event  ASME Pressure Vessels and Piping Conference  Prague, Czech Republic Duration: 26 Jul 2009 → 30 Jul 2009 
Conference
Conference  ASME Pressure Vessels and Piping Conference 

City  Prague, Czech Republic 
Period  26/07/09 → 30/07/09 
Keywords
 lower and upper bound
 limit load
 shakedown
 linear matching method
Activities
 1 Participation in conference

2009 ASME Pressure Vessels & Piping Conference
Haofeng Chen (Invited speaker)
29 Jul 2009Activity: Participating in or organising an event types › Participation in conference