Limiting Performance and Design by Reanalysis of Structures for Blast Resistanceby Walter D. Pilkey, Univ of Virginia, Charlottesville, VA, USA,
Levent Kitis, Univ of Virginia, Charlottesville, VA, USA,
Abstract: Limiting performance is the absolute optimal response of a structure under a specified transient load. Reanalysis methods are computational techniques for analyzing locally modified large-scale structures without solving the full set of equations of motion. This paper makes use of the recent advances in these two areas to establish a method for designing structural components of systems subjected to blast loading. First, the parts of the system to be designed are replaced by control forces. These forces are allowed arbitrary variation in time and are chosen to optimize a preselected performance index. Then, reanalysis methods are applied to design the actual structural components so that the system response approximates as closely as possible the limiting performance.
Subject Headings: Transient loads | Dynamic structural analysis | Load factors | Equations of motion | Structural members
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