Wood method
The Wood method, also known as the Merchant–Rankine–Wood method, is a structural analysis method which was developed to determine estimates for the effective buckling length of a compressed member included in a building frames, both in sway and a non-sway buckling modes.[1][2] It is named after R. H. Wood. According to this method, the ratio between the critical buckling length and the real length of a column is determined based on two redistribution coefficients, [math]\displaystyle{ \eta_1 }[/math] and [math]\displaystyle{ \eta_2 }[/math], which are mapped to a ratio between the effective buckling length of a compressed member and its real length.
The redistribution coefficients are obtained through the following expressions:
- [math]\displaystyle{ \eta_i = \frac{K_c + K_i}{K_c+K_i + K_i1 + K_i2},\quad i = 1,2 }[/math]
where [math]\displaystyle{ K_i }[/math] are the stiffness coefficients for the adjacent length of columns.
Although this method was included in ENV 1993-1-1:1992, it is absent from EN 1993-1-1.
See also
- EN 1993
- Merchant–Rankine method
- Horne method
References
- ↑ Wood, R. H. (1974). "Effective Lengths of Columns in Multi-Storey Buildings. The Struct. Eng., Vol. 52, 7". pp. 341–346.
- ↑ 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.
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