Description of the problem
To verify the mathematical model of ELPLA for analyzing unsymmetrical closed frames, moments in an unsymmetrical closed frame introduced by Wang (1983) (Example 15.10.1, page 574) are compared with those obtained by ELPLA.
An unsymmetrical closed frame ABCD is considered as shown in Figure 63. The frame is subjected to a point load of P = 24 [kN] at the center of the member BC and a distributed load of q = 2 [kN/m] on the member AD.