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Date : 2016-06-23 12:24:21

COPARISON OF RANKINE AND GORDAN FORMULAE:

A comparison of the Rankine-Gordon and Euler formulae, for geometrically perfect struts, is given in Fig 1. Some typical values for 1/a and , are given in Table 1. Where Lo is the effective length of the strut; see next Section.

Fig 1:Comparison of Euler and Rankine-Gordon formulae

 

 

Table 1 Rankine Constants

 

EFFECT OF GEOMETRICAL IMPERFACTIONS:


For intermediate struts with geometrical imperfections, the buckling load is further decreased, as shown in Fig 2.

Fig 2: Rankin gordon loads for perfect and imperfect struts

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