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Table 2 Input and variables according to different types of problem

From: An overview of the plastic-hinge analysis of 3D steel frames

Type of problem Input Unknowns
Elastic–plastic analysis B, D ep , f d
Limit analysis B, N, f, s 0 d, λ
Shakedown analysis B, N, s E , s 0 d, λ
Limit optimization B, N, f n p , s
Shakedown optimization B, N, s E n p , ρ