This paper presents refined one-dimensional models with node-dependent kinematics. The three-dimensional displacement field is discretized into two domains, namely cross-section domain and axis domain. The mechanical behaviors of the beam can be firstly captured by the cross-section functions then interpolated by the nodal shape functions of the beam element. Such a feature makes it possible to adopt different types of cross-section functions on each element node, obtaining node-dependent kinematic finite element models. Such models can integrate Taylor-based and Lagrange-type nodal kinematics on element level, bridging a less-refined model to a more refined model without using special coupling methods. FE governing equations of node-dependent models are derived by applying the Carrera Unified Formulation. Some numerical cases on metallic and composite beam-like structures are studied to demonstrate the effectiveness of node-dependent models in bridging a locally refined model to a global model when local effects should be accounted for.
Finite element models with node-dependent kinematics for the analysis of composite beam structures / Carrera, E.; Zappino, E.; Li, G.. - In: COMPOSITES. PART B, ENGINEERING. - ISSN 1359-8368. - 132(2018), pp. 35-48. [10.1016/j.compositesb.2017.08.008]
|Titolo:||Finite element models with node-dependent kinematics for the analysis of composite beam structures|
|Data di pubblicazione:||2018|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1016/j.compositesb.2017.08.008|
|Appare nelle tipologie:||1.1 Articolo in rivista|