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KB 001615 | Options for considering accidental torsional effects according to standards
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Description
In order to consider inaccuracies regarding the position of masses in a response spectrum analysis, the standards for seismic design specify rules that have to be applied in both the simplified and the multimodal response spectrum analysis. These rules describe the following general procedure: The story mass must be shifted by a certain eccentricity, which results in a torsional moment.
Keywords
Dlubal Knowledge Base Dynamic analysis Earthquake Response spectrum Torsion Mass Story Dlubal KB Knowledge Base Technical Contribution
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Options for considering accidental torsional effects according to standards
In order to consider inaccuracies regarding the position of masses in a response spectrum analysis, the standards for seismic design specify rules that have to be applied in both the simplified and the multimodal response spectrum analysis.
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Considering the Stiffness of Gas Solids in Nonlinear Time History Analysis
The stiffness of gas given by the ideal gas law pV = nRT can be considered in the nonlinear dynamic analysis.
The calculation of gas is available for accelerograms and time diagrams for both the explicit analysis and the nonlinear implicit Newmark analysis. To determine the gas behaviour correctly, at least two FE layers for gas solids should be defined.
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