Engineering Asked by Mohammed Rahman on July 19, 2021
This parameter defines the structural behavior, defining shear or flexure behavior of the structure.
How do I use this parameter to define the stiffness matrix of the structure to perform dynamic analyses? I am performing RSA manually on a stick model, coding in Matlab. This parameter has no units.(dimensionless, its a ratio). RCC model. This is referred to as ALPHA in “APPROXIMATE SEISMIC LATERAL DEFORMATION DEMANDS IN MULTISTORY BUILDINGS By Eduardo Miranda”
Since you only have the ratio, and you are programming it, you have to assume an $E times l$ for your column or beam and then apply the ratio for the other one (using 1 will do).
However, to define your stiffness matrix you will also need a ratio for your section areas. This is why I would suggest picking 2 realistic sections and approximately find that ratio for each stiffness ratio.
Answered by Apostolos Grammatopoulos on July 19, 2021
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