Identifying Critical Loads of Frame Structures with Equilibrium Equations in Rate Form

Table 2

The comparison of the first critical loads from the presented method and Meek and Xue [18].

	Meek and Xue [18]	The number of elements per member
		2	4	8	16
Critical load (N)	561.4	626.1	582.9	571.9	569.3
Relative error (%)	—	11.52	3.83	1.87	1.41