Refined Beam Theory for Geometrically Nonlinear Pre-Twisted Structures

• Published in: Aerospace Vol. 9; no. 7; p. 360
• Main Authors: Hu, Yi, Zhao, Yong, Liang, Haopeng
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.07.2022
• Subjects: Beam theory (structures); Carrera unified formulation; Deformation; Deformation effects; Finite element method; finite untwist; Flexing; geometrical nonlinearity; large displacement; local mapping; Mathematical analysis; Mathematical models; Matrices (mathematics); Mechanical properties; Nonlinearity; Polynomials; refined beam theory; Stiffening; Tensors

This paper proposes a novel fully nonlinear refined beam element for pre-twisted structures undergoing large deformation and finite untwisting. The present model is constructed in the twisted basis to account for the effects of geometrical nonlinearity and initial twist. Cross-sectional deformation...