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- W2520210062 abstract "It is very important to acknowledge the dynamic characteristic sensitivity of derrick steel structures during the processes of design, model modification, damage identification, test sensor arrangement and safety assessment. The sensitivities of the eigen values and eigenvectors with design parameters are derived. The numerical method of sensitivity analysis of derrick steel structures is introduced. The sensitivities of frequency and modal displacement to cross-sectional area, Young's modulus and anti-bending moment of inertia of the column, cross-bar, and diagonal brace of derrick steel structure are analyzed. The features and law of the frequency and modal displacement to main design parameters are obtained. The results show that both frequency and mode shift have a greater sensitivity to design parameters of column and a smaller sensitivity to design parameters of cross-bar and diagonal brace, that the sensitivities of frequency to cross-sectional area and Young's modulus are relatively large while the sensitivity impact trend is on the opposite, and that modal shapes have a greater sensitivity only to Young's modulus. The results provide a valuable reference for engineering applications." @default.
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- W2520210062 date "2012-05-18" @default.
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- W2520210062 title "Sensitivity Analysis of Dynamic Characteristics of Derrick Steel Structures" @default.
- W2520210062 doi "https://doi.org/10.1109/icetce.2012.616" @default.
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