TY  - JOUR
A1  - Staat, Manfred
T1  - Basis Reduction for the Shakedown Problem for Bounded Kinematic Hardening Material
N2  - Limit and shakedown analysis are effective methods for assessing the load carrying capacity of a given structure. The elasto–plastic behavior of the structure subjected to loads varying in a given load domain is characterized by the shakedown load factor, defined as the maximum factor which satisfies the sufficient conditions stated in the corresponding static shakedown theorem. The finite element dicretization of the problem may lead to very large convex optimization. For the effective solution a basis reduction method has been developed that makes use of the special problem structure for perfectly plastic material. The paper proposes a modified basis reduction method for direct application to the two-surface plasticity model of bounded kinematic hardening material. The considered numerical examples show an enlargement of the load carrying capacity due to bounded hardening.
KW  - Finite-Elemente-Methode
KW  - Einspielen <Werkstoff>
KW  - Basis Reduktion
KW  - konvexe Optimierung
KW  - FEM
KW  - Druckgeräte
KW  - Basis reduction
KW  - Convex optimization
KW  - FEM
KW  - Shakedown analysis
Y1  - 2000
ER  - 
TY  - JOUR
A1  - Staat, Manfred
T1  - LISA - a European project for FEM-based limit and shakedown analysis
N2  - The load-carrying capacity or the safety against plastic limit states are the central questions in the design of structures and passive components in the apparatus engineering. A precise answer is most simply given by limit and shakedown analysis. These methods can be based on static and kinematic theorems for lower and upper bound analysis. Both may be formulated as optimization problems for finite element discretizations of structures. The problems of large-scale analysis and the extension towards realistic material modelling will be solved in a European research project. Limit and shakedown analyses are briefly demonstrated with illustrative examples.
KW  - Einspielen <Werkstoff>
KW  - Traglast
KW  - Finite-Elemente-Methode
KW  - Traglastanalyse
KW  - Einspielanalyse
KW  - FEM
KW  - limit analysis
KW  - shakedown analysis
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Staat, Manfred
T1  - Limit and shakedown analysis under uncertainty
JF  - International journal of computational methods : IJCM
Y1  - 2013
SN  - 0219-8762
SP  - Publ. online
PB  - World Scientific Publishing
CY  - Singapore
ER  - 
TY  - JOUR
A1  - Staat, Manfred
T1  - Limit and shakedown analysis under uncertainty
JF  - Tap chi Khoa hoc & ung dung - Dai hoc Ton Duc Thang
Y1  - 2012
N1  - = Journal of Applied Sciences - Ton Duc Thang University
VL  - 19
SP  - 45
EP  - 47
ER  - 
TY  - JOUR
A1  - Staat, Manfred
T1  - Sensitivity of and Influences on the Reliability of an HTR-Module Primary Circuit Pressure Boundary
JF  - Transactions of the 12th International Conference on Structural Mechanics in Reactor Technology (SMiRT-12) / Kussmaul, K. [ed]
Y1  - 1993
SN  - 0-444-81515-5
N1  - Vol. M, Paper MG10/2
SP  - 147
EP  - 152
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Staat, Manfred
T1  - Problems and Chances for Probabilistic Fracture Mechanics in the Analysis of Steel Pressure Boundary Reliability
JF  - Technical feasibility and reliability of passive safety systems for nuclear power plants. Proceedings of an Advisory Group Meeting held in Jülich, 21-24 November 1994
Y1  - 1996
N1  - IAEA-TECDOC-920 ; Onlinezugriff erfolgt auf die überarb. Ausg. 2006
SP  - 43
EP  - 55
CY  - Vienna
ER  - 
TY  - JOUR
A1  - Staat, Manfred
T1  - Reliability of an HTR-module primary circuit pressure boundary Influences, sensitivity, and comparison with a PWR
JF  - Nuclear Engineering and Design. 158 (1995), H. 2-3
Y1  - 1995
SN  - 0029-5493
SP  - 333
EP  - 340
ER  - 
TY  - JOUR
A1  - Staat, Manfred
T1  - Probabilistic assessment of the fracture mechanics behaviour of an HTR-module primary circuit pressure boundary
JF  - Nuclear Engineering and Design. 160 (1996), H. 1-2
Y1  - 1996
SN  - 0029-5493
SP  - 221
EP  - 236
ER  - 
TY  - JOUR
A1  - Staat, Manfred
A1  - Ballmann, J.
T1  - Wave Propagation and Focussing in Plates
JF  - Impact loading and dynamic behaviour of materials : Papers presented at the International Conference on Impact Loading and Dynamic Behaviour of Materials, Vol. 2 /  Chiem, C. Y.; Kunze, L. (u.a.) [eds]
Y1  - 1988
PB  - DGM Informationsges.
CY  - Oberursel
ER  - 
TY  - JOUR
A1  - Staat, Manfred
A1  - Ballmann, J.
T1  - Computation of impacts on elastic solids by methods of bicharacteristics
JF  - Computational Mechanics '88 : theory and applications ; proceedings of the International Conference on Computational Engineering Science April 10-14, 1988, Atlanta, GA, USA ; vol. 2
N2  - Shock waves, explosions, impacts or cavitation bubble collapses may generate stress waves in solids causing cracks or unexpected dammage due to focussing, physical nonlinearity or interaction with existing cracks. There is a growing interest in wave propagation, which poses many novel problems to experimentalists and theorists.
KW  - Bicharakteristikenverfahren
KW  - Elastizität
KW  - elastic solids
KW  - bicharacteristics
Y1  - 1988
SP  - 1719
EP  - 1722
ER  -