Nonlinear Long-Term Analysis of Timber-Concrete Composite Structures with Finite Element-Finite Difference Scheme

Abstract:

Long-term analysis of timber-concrete composite (TCC) structures is a challenging task owing to the time-dependent behaviour of timber, concrete and connections which are highly nonlinear under variable environmental conditions (i.e. temperature, humidity). In this paper an efficient numerical method that takes advantage of a finite element-finite difference (FE-FD) scheme is presented. The differential equations governing the long-term behaviour of TCC section under variable humidity are solved using the FD scheme and the differential equations governing the mechanical behaviour of the composite beam are solved by a FE formulation recast in the framework of force-interpolation concept. The comparison between experimental data and numerical results shows the sufficient accuracy of the proposed FE-FD model for capturing long-term behaviour of TCC members.

• Periodical: Applied Mechanics and Materials (Volume 553)
• Pages: 618-624
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.553.618
• Online since: May 2014
• Authors: Nima Khorsandnia*, Hamid R. Valipour, Keith Crews
• Keywords: Finite Difference, Finite Element, Long Term, Timber-Concrete Composite

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