Improved Displacement-Field Approximation for Geometrical Nonlinear Flexibility-Based Planar Curved Element in State Space^#

Flexibility-based stress-driven nonlocal frame element: formulation and applications

“…Furthermore, the element load can be added naturally within the framework of flexibility-based finite element formulation and this feature is not valid in the stiffness-based finite element formulation employed by Russillo et al [76]. To date, the flexibility-based finite element formulation has been extensively employed to develop a more computationally efficient numerical platform for nonlinear analysis of structures [80][81][82][83][84]. Several drawbacks inherent in the standard stiffness-based finite element formulation were shown to be eliminated in the flexibility-based finite element formulation [80].…”