Wood method

The Wood method is a structural analysis method which was developed to evaluate the buckling length of columns in building frames, including continuous columns, in a sway and a non-sway buckling mode.

According to this method, the ratio between the buckling length and the real length of a column is evaluated based on two distribution coefficients, $\eta_1$ and $\eta_2$ and abacus applicable to structures susceptible to sway and non-sway buckling modes.

The distribution factors are obtained through the following expressions:

$\eta_i = \frac{K_c %2B K_i}{K_c%2BK_i %2B K_i1 %2B K_i2}\quad; i = \{1,2\}$

where $K_i$ are the stiffness coefficients for the adjacent length of columns.

Although this method, along with the abacuses which are used to determine the buckling lengths, was included in ENV 1993-1-1:1992, it is absent from EN 1993-1-1.

References

Simões, Rui (2007). Manual de Dimensionamento de Estruturas Metálicas. CMM – Associação Portuguesa de Construção Metálica e Mista. p. 119. ISBN 978-972-98376-9-2.

Wood method

See also

References