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A unified reanalysis approach for structural analysis, design, and optimization

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Abstract

This study presents a unified reanalysis approach for structural analysis, design, and optimization that is based on the Combined Approximations (CA) method. The method is suitable for various analysis models (linear, nonlinear, elastic, plastic, static, dynamic), different types of structures (trusses, frames, grillages, continuum structures), and all types of design variables (cross-sectional, material, geometrical, topological). The calculations are based on results of a single exact analysis. The computational effort is usually much smaller than that needed to carry out a complete analysis of modified designs. Accurate results are achieved by low-order approximations for significant changes in the design. It is possible to improve the accuracy by considering higher-order terms, and exact solutions can be achieved in certain cases. The solution steps are straightforward, and the computational procedures presented can readily be used with general finite element systems. Typical results are demonstrated by numerical examples.

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  1. Department of Civil Engineering, Technion-Israel Institute of Technology, 32000, Haifa, Israel

    U. Kirsch

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  1. U. Kirsch
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Kirsch, U. A unified reanalysis approach for structural analysis, design, and optimization. Struct Multidisc Optim 25, 67–85 (2003). https://doi.org/10.1007/s00158-002-0269-0

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