Browse/search for people

Publication - Professor Mark Lowenberg

    Uncertainty and sensitivity analysis of bifurcation loci characterizing nonlinear landing-gear dynamics

    Citation

    Tartaruga, I, Cooper, JE, Lowenberg, MH, Sartor, P & Lemmens, Y, 2018, ‘Uncertainty and sensitivity analysis of bifurcation loci characterizing nonlinear landing-gear dynamics’. Journal of Aircraft, vol 55., pp. 162-172

    Abstract

    A methodology is developed to efficiently, yet accurately, determine the uncertainty bounds of the bifurcation loci of nonlinear dynamic systems subjected to parametric variations. The chosen approach makes use of numerical continuation, higher-order singular-value decomposition, and surrogate modeling. The technique is demonstrated on a representative model of an aircraft undercarriage, where the effect of uncertainty in the structural parameters is propagated onto the prediction of the conditions for the onset of shimmy. Comparison with numerical integration results demonstrates the accuracy of the methodology.

    Full details in the University publications repository