Nonlinear finite element analysis of timber beams and joints using the layered approach and hypoelastic constitutive law

被引:44
作者
Khorsandnia, Nima [1 ]
Valipour, Hamid R. [2 ]
Crews, Keith [1 ]
机构
[1] Univ Technol Sydney, Sch Civil & Environm Engn, CBIR, Sydney, NSW 2007, Australia
[2] Univ New S Wales, Sch Civil & Environm Engn, CIES, Sydney, NSW, Australia
关键词
Failure envelope; Hashin damage; Hypoelastic; Timber-concrete composite; COMPOSITE BEAMS; MODEL; STRENGTH; BEHAVIOR; FRACTURE; WOOD;
D O I
10.1016/j.engstruct.2012.08.017
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
This paper focuses on development and application of finite element models for nonlinear analysis of timber, timber-concrete composite (TCC) beams and joints. A new piecewise continuous orthotropic failure envelope in the bi-axial stress space is proposed for modelling timber behaviour. The proposed orthotropic surface is simplified based on isotropic behaviour of timber along the grains and the model is formulated within the framework of hypoelastic constitutive law. The developed constitutive law and finite element (FE) models are verified by examples taken from the literature including timber beams with and without notches and holes subject to three- and four-point bending as well as push-out test results of TCC connections. Further, the accuracy and performance of the proposed constitutive law for capturing nonlinear behaviour and failure load of timber beams and connections is compared with orthotropic Hashin damage model. The FE results show good agreement with experimental results in terms of load-displacement response and ultimate loading capacity of members and it is concluded that the developed timber model can adequately capture the global as well as the local behaviour of timber beams and TCC connections. (c) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:606 / 614
页数:9
相关论文
共 34 条
  • [1] [Anonymous], 2010, Characterisation of Structural Timber Test Methods
  • [2] [Anonymous], 2000, VER 6 2 HIBB
  • [3] Bazan I.M. M., 1980, Ultimate Bending Strength Of Timber Beams
  • [4] Bazant PZ, 1983, Mater Et Constr, V16, P155, DOI DOI 10.1007/BF02486267
  • [5] Strengthening timber bridge beams using carbon fiber
    Buell, TW
    Saadatmanesh, H
    [J]. JOURNAL OF STRUCTURAL ENGINEERING, 2005, 131 (01) : 173 - 187
  • [6] SEGMENTED MODELS FOR STRESS-STRAIN DIAGRAMS
    CONNERS, TE
    [J]. WOOD SCIENCE AND TECHNOLOGY, 1989, 23 (01) : 65 - 73
  • [7] ANALYSIS OF R/C PANELS USING DIFFERENT CONCRETE MODELS
    CRISFIELD, MA
    WILLS, J
    [J]. JOURNAL OF ENGINEERING MECHANICS-ASCE, 1989, 115 (03): : 578 - 597
  • [8] DARWIN D, 1977, J ENG MECH DIV-ASCE, V103, P229
  • [9] Darwin D, 1974, INELASTIC MODEL CYCL, P169
  • [10] A non-linear 3D FEM model to simulate timber-concrete joints
    Dias, A. M. P. G.
    Van de Kullen, J. W.
    Lopes, S.
    Cruz, H.
    [J]. ADVANCES IN ENGINEERING SOFTWARE, 2007, 38 (8-9) : 522 - 530