Civil Engineering Association

Giberson Beam: a classic lumped plasticity model for nonlinear analysis

Author: Giberson, M.F. | Size: 12 MB | Format: PDF | Publisher: Caltech | Year: 1967

This is a well-known classic thesis from Caltech entitled: the response of nonlinear multi-story structures subjected to earthquake excitation. The thesis has proposed the One-Component and Two-Component Beams model, a model to represent a nonlinear beam which has used the combination of spring - linear element - spring. This model was then enhanced and hence known as lumped plasticity model which is currently available in SAP2000/ETABS/Ruaumoko/OpenSees. In Ruaumoko, the author name is used as the name of a nonlinear elements in FRAME element (so-called Giberson beam).

The thesis is very useful in understanding the nonlinear model of beam especially for those who are interesting in analytical modelling.

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