Summary
The present essay contains a general structural stability theory for discretized structural systems. Instabilities are essential constituents of nonlinear structural responses, the computational assessment of which in a modern treatment is exclusively based on incremental-iterative (step-wise) numerical techniques, applied to the tangential equation of motion. The paper derives this fundamental equation as first variation of the nonlinear equation of motion in its standard form and its phase projection. Further, it transforms the principle of virtual work for arbitrary nonlinear (Kelvin-Voigt) continua into its incremental variant and finally into the consistent tangential equation of motion. Its various applications then are demonstrated to classes of time-independent and time-dependent, unstable structural responses, for which suitable numerical instruments are outlined. The derived algorithms are based on the concepts of Lyapunow exponents and Poincaré multipliers which are introduced as universal stability measures. Qualitative and quantitative convergence properties of perturbations in the phase space enable the proper establishment of stability definitions. The validity of the received concepts is illustrated by several examples.
Similar content being viewed by others
References
Ramm, E. (ed.) (1982), “Buckling of Shells”, Springer-Verlag, Berlin.
Bushnell, D. (1981), “Buckling of Shells-Pitfall for Designers”,JAIAA,9, pp. 1183–1226.
Willems, J.L. (1970), “Stability Theory of Dynamical Systems”, Th. Nelson & Sons Ltd., London.
Müller, P.C. (1977), “Stabilität und Matrizen”, Springer-Verlag, Berlin.
Bellman, R. (1969) (1st ed. 1953), “Stability Theory of Differential Equations”, Dover Publications Inc., New York.
Ljapunow, A.M. (1949), “Problème général de la stabilité du mouvement”, Translation of 2nd doctoral thesis from 1893,Ann. Math. Studies, Princeton.
Ramm, E. (1981), “Strategies for Tracing the Nonlinear Response Near Limit Points”, In: W. Wunderlichet al. (eds.), “Nonlinear Finite element Analysis in Structural Mechanics”, Springer-Verlag, Berlin, pp. 63–89.
Crisfield, M.A. (1981), “A Fast Incremental/Iterative Solution Procedure that Handles Snap-Through”,Comp. & Struct.,13, pp. 55–62.
Riks, E. (1979), “An Incremental Approach to the Solution of Snapping and Buckling Problems”,Int. J. Solids Struct.,15, pp. 529–551.
Nawrotzki, P., Krätzig, W.B. and Montag, U. (1994), “On Kinetic Instability Phenomena of Elasto-Plastic Shell Structures”,Proc. 2nd Int. Conf. Comp. Struct. Technologies, Adv. Comp. Mech., Civil-Comp. Ltd., Edinburgh, pp. 83–97.
Basar, Y. and Krätzig, W.B. (1989), “A Consistent Shell Theory for Finite Deformations”Acta Mechanica,76, pp. 73–87.
Zienkiewicz, O.C. (1989), “The Finite Element Method”, 3rd edition, McGraw-Hill Book Company Ltd., London.
Argyris, J.H. and Mlejnek, H.P. (1986), “Die Methode der Finiten Elemente”, Band 1. Friedw. Vieweg & Sohn, Braunschweig.
Krätzig, W.B. (1989), “Eine einheitliche statische und dynamische Stabilitätstheorie für Pfadverfolgungsalgorithmen in der numerischen Festkörpermechanik”,ZAMM,69, 7, pp. 203–213.
Krätzig, W.B. (1990), “Fundamentals of Numerical Algorithms for Static and Dynamic Instability Phenomena of Thin Shells” In: W.B. Krätzig, E. Oñate (eds.),Computational Mechanics of Nonlinear Response of Shells, Springer-Verlag Berlin, pp. 101–124.
Zurmühl, R. and Falk, S. (1984/1986, “Matrizen und ihre Anwendungen”, Vol. 1/2, Springer-Verlag, Berlin/Heidelberg/New York/Tokyo.
Eckstein, U. (1983), “Nichtlineare Stabilitätsberechnung elastischer Schalentragwerke”,Techn. Report,83, 3, Inst. for Struct. Engng., Ruhr-University, Bochum.
Stein, E., Wagner W. and Wriggers, P. (1989), “Grundlagen nichtlinearer Berechnungsverfahren in der Strukturmechanik”, In: E. Stein (ed.),Nichtlineare Berechnungen im Konstruktiven Ingenieurbau, Springer-Verlag, Berlin, pp. 1–53.
Thompson, J.M.T. and Hunt, G.W. (1973), “A General Theory of Elastic Stability”, John Wiley & Sons Ltd., London.
Leipholz, H. (1968), “Stabilitätstheorie”, Teubner, Stuttgart.
Ziegler, H. (1968), “Principles of Structural Stability”, Blaisdell, Massachusetts/Toronto/London.
Abbot, J.P. (1978), “An Efficient Algorithm for the Determination of Certain Bifurcation Points”,J. Comp. Appl. Math.,4, pp. 19–27.
Brendel, B. and Ramm, E. (1982), “Nichtlineare Stabilitätsuntersuchungen mit der Methode der finiten Elemente”,Ing. Archiv,51, pp. 337–362.
Werner, B. and Spence, A. (1984), “The Computation of Symmetry-Breaking Bifurcation Points”,SIAM J. Num. Anal.,21, pp. 388–399.
Weinitschke, H.J. (1985), “On the Calculation of Limit and Bifurcation Points in Stability Problems of Elastic Shells”,Int. J. Sol. Struct.,21, pp. 79–95.
Wriggers, P., Wagner, W. and Miehe, C. (1988), “A Quadradically Convergent Procedure for the Calculation of Stability Points in Finite Element Analysis”,Comp. Meth. Appl. Mech. Engng.,70, pp. 329–347.
Wriggers, P. (1993), “Fundamentals of Nonlinear Response Analysis of Discretized Systems”, Lecture Notes, CISM-Course on Nonlinear Stability of Structures, Udine.
Choong, K.K. and Hangai, Y. (1993), “Review on Methods of Bifucation Analysis for Geometrically Nonlinear Structures”,IASS-Bulletin,34, pp. 133–149.
Koiter, W.T. (1945), “On the Stability of Elastic Equilibrium” (in Dutch), H.J. Paris, Amsterdam.
Krätzig, W.B. and Li, L.Y. (1992), “On rigorous stability conditions for dynamic quasi- bifucations”,Int. J. Sol. Struct.,29, 1, pp. 97–104.
Kreuzer, E. (1987), “Numerische Untersuchung nichtlinearer dynamischer Systeme”, Springer-Verlag, Berlin.
Eller, C. (1988) “Lineare und nichtlineare Stabilitätsanalyse periodisch erregter, visko-elastischer Strukturen”,Mitt.,88, 2, Inst. für Konstruktiven Ingenieurbau, Ruhr-Universität, Bochum.
Müller, P.C., Schiehlen, W.O. (1976), “Lineare Schwingungen”, Akad. Verlagsges., Wiesbaden.
Thompson, J.M.T. and Stewart, H.B. (1986), “Nonlinear Dynamics and Chaos”, J. Wiley and Sons, Chichester.
Schuster, H.G. (1989), “Deterministic Chaos”, VCH Verlagsges., Weinheim.
Krätzig, W.B. and Eller, C. (1992), “Numerical Algorithms for Unstable Dynamic Shell Responses”,Computers & Structures,44, 1/2, pp. 263–271.
Kunick, A. and Steeb, W.H. (1986), “Chaos in dynamischen Systemen”, BI Wissenschaftsverlag, Mannheim/Wien/Zürich.
Nawrotzki, P. (1994), “Numerical Stability Analysis of Arbitrary Structural Responses”,Techn. Report,94, 2, Inst. for Struct. Engng., Ruhr-University, Bochum.
Moon, F.C. (1987), “Chaotic Vibrations”, J. Wiley & Sons, Inc., New York.
Argyris, J., Faust, G. and Haase, M. (1994), “Die Erforschung des Chaos”, Vieweg Verlag, Braunschweig/Wiesbaden.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Krätzig, W.B., Nawrotzki, P. Computational concepts in structural stability. ARCO 3, 81–119 (1996). https://doi.org/10.1007/BF02736131
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02736131