An improved measure of structural vulnerability

Wenjuan Zhuang, Jitendra Agarwal

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The conventional design provides a structural system with a degree of strength and ductility but it is not easy to quantify the level of robustness. A measure
of vulnerability provides a direction to increase the robustness of a structure. The structural vulnerability theory examines the form of a structure to quantify the consequences in relation to initial damage and thus identifies vulnerable failure scenarios. A significant aspect of the theory is the concept of well-formedness which helps to evaluate the structural consequences after damage.

The purpose of this paper is present an improved measure of structural wellformedness and vulnerability. Its novelty lies in taking a better account of the structural supports thus producing more representative vulnerability indices for the identified failure scenarios. First, the structural vulnerability theory, including the original well-formedness measure is briefly introduced to set the context. Second, the modifications to the well-formedness measure are presented. These make use of the largest eigenvalues of the support joints to differentiate the quality of individual support joints to vulnerability. Third, the efficacy of the new measure is demonstrated through numerical examples.
Original languageEnglish
Publication statusPublished - 6 Oct 2017
Event12th International Conference on Structural Safety & Reliability - Vienna, Austria
Duration: 6 Aug 201710 Aug 2017
Conference number: 17


Conference12th International Conference on Structural Safety & Reliability
Abbreviated titleICOSSAR


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