This paper presents a novel interdependent interpolation finite element for a higher order beam model capable of capturing the shear-lag phenomenon and the overall shear deformability of composite beams. After a brief overview of the beam kinematics and of the differential solving equations, the stiffness matrix and the nodal forces to be used in a standard finite element procedure are derived in a consistent way by exploiting properties of exponential matrices ad their application in the solution of linear differential equation systems. Some comparisons with solutions obtained by using finite elements with polynomial interpolating functions demonstrate the capability of the new element.
A higher order finite element to analyse steel-concrete composite bridge decks / Carbonari, Sandro; Dezi, Luigino; Gara, Fabrizio; Leoni, Graziano. - ELETTRONICO. - (2016), pp. 40-47. (Intervento presentato al convegno 19th IABSE Congress tenutosi a Stockholm, Sweden nel 21-23 September 2016).
A higher order finite element to analyse steel-concrete composite bridge decks
CARBONARI, SANDRO;DEZI, LUIGINO;GARA, Fabrizio;
2016-01-01
Abstract
This paper presents a novel interdependent interpolation finite element for a higher order beam model capable of capturing the shear-lag phenomenon and the overall shear deformability of composite beams. After a brief overview of the beam kinematics and of the differential solving equations, the stiffness matrix and the nodal forces to be used in a standard finite element procedure are derived in a consistent way by exploiting properties of exponential matrices ad their application in the solution of linear differential equation systems. Some comparisons with solutions obtained by using finite elements with polynomial interpolating functions demonstrate the capability of the new element.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
