000021621 001__ 21621
000021621 005__ 20170622131256.0
000021621 04107 $$aeng
000021621 046__ $$k2017-06-15
000021621 100__ $$aScott, Michael
000021621 24500 $$aMITIGATION OF NON-CONVERGENCE ISSUES IN NONLINEAR TIME HISTORY ANALYSIS OF HIGHWAY BRIDGES

000021621 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021621 260__ $$bNational Technical University of Athens, 2017
000021621 506__ $$arestricted
000021621 520__ $$2eng$$aNonlinear time history analysis (NLTHA) is an essential component to quantifying the probability of failure for a structural system subjected to seismic loading. This is particularly important for bridge structures that must remain operational immediately following strong ground motions in order to facilitate emergency response. With complex constitutive models and high seismic demands, non-convergence in the NLTHA of bridges is frequently encountered. The non-convergence is generally thought to represent a physical failure of a bridge component, e.g., core concrete crushing, shear key failure, etc.; however, in some cases, nonconvergence can arise from numerical issues. These issues include the choice of damping model, time step size, constraint handling method, or other modeling decisions over which an analyst has control. The root causes of non-convergence due to numerical issues are outlined followed by recommendations for NLTHA "best practices" to mitigate such non-convergence issues. Results are presented for four reinforced concrete highway bridges in California; however, the results are generally applicable for a wide range of computational simulations in nonlinear structural dynamics.

000021621 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021621 653__ $$a

000021621 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021621 720__ $$aScott, Michael$$iMackie, Kevin
000021621 8560_ $$ffischerc@itam.cas.cz
000021621 8564_ $$s116567$$uhttps://invenio.itam.cas.cz/record/21621/files/17264.pdf$$yOriginal version of the author's contribution as presented on CD, section: [MS18] Modeling the Nonlinear Behavior of Structures
.
000021621 962__ $$r21500
000021621 980__ $$aPAPER