000004490 001__ 4490
000004490 005__ 20141118192700.0
000004490 0177_ $$2doi$$a10.3850/978-981-07-2219-7_P140

000004490 0247_ $$210.3850/978-981-07-2219-7_P140
$$adoi
000004490 04107 $$aeng
000004490 046__ $$k2012-05-23
000004490 100__ $$aGu, Quan
000004490 24500 $$aA New Framework for Response Sensitivity Analysis of Soil-Structure Interaction (SSI) Systems

000004490 24630 $$n5.$$pProceedings of the 5th Asian-Pacific Symposium on Structural Reliability and its Applications
000004490 260__ $$bResearch Publishing, No:83 Genting Lane, #08-01, Genting Building, 349568 SINGAPORE
000004490 506__ $$arestricted
000004490 520__ $$2eng$$aResponse sensitivities are crucial components for any gradient based optimization process, such as structural reliability, optimization, model updating, and system identification. In the context of finite element (FE) method, this paper presents a new computational framework for response sensitivity analysis based on the direct differentiation method (DDM). The framework can be used for structural, geotechnical or soil-structure interaction (SSI) systems. The DDM-based sensitivity analysis requires differentiating analytically the FE algorithm for the response computation with respect to material\geometry\loading parameters. It provides a semi-analytical solution to the response sensitivities (or gradients) in the sense that the response sensitivities are "exact" once the discretized form (in both space and time domain) of the equation of motion is obtained. The differentiation follows the response computation and involves all hierarchical layers of FE response analysis, namely: (1) structure level, (2) element level, (3) Gauss point level (or section level), and (4) material level. The framework is implemented in a general purpose FE software, OpenSees, an open system for earthquake engineering simulation, which is widely used for static/dynamic, linear/nonlinear FE analysis of structural/geotechnical systems. Base on the newly developed framework, a three dimensional nonlinear frame-soil system subjected to dynamic base excitation is used as benchmark example for studying the sensitivity of material parameters in both structure and soil. In this paper, the sensitivity results provide the relative importance of various material parameters on the responses of the SSI system. To quantify the uncertainty propagation, the sensitivities of both local responses at material/element/section level and global responses at the structural level are studied.

000004490 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004490 653__ $$aFinite element method, Reliability analysis, Response sensitivity analysis, Direct differentiation method, Soil-foundation-structure-interaction, Multi-yield-surface plasticity model.

000004490 7112_ $$a5th Asian-Pacific Symposium on Structural Reliability and its Applications$$cSingapore (SG)$$d2012-05-23 / 2012-05-25$$gAPSSRA2012
000004490 720__ $$aGu, Quan$$iPeng, Yi
000004490 8560_ $$ffischerc@itam.cas.cz
000004490 8564_ $$s386681$$uhttps://invenio.itam.cas.cz/record/4490/files/P140.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004490 962__ $$r4180
000004490 980__ $$aPAPER