“…Analytical models with closed-form solution [19,23,24,27,31,34,42,[62][63][64][65][66][67][68] that are, simultaneously, simple, fast, and based on non-restrictive assumptions exist only for few types of structures, restraints, and loadings. Moreover, they are mainly devoted to the linear behavior only, while non-linearity usually entails more restrictive assumptions and mathematical complications.…”