Multi-scale model updating for the mechanical properties of cross-laminated timber

被引：18

作者：

Saavedra Flores, E. I. ^{[1
]}

Ajaj, R. M. ^{[2
]}

Dayyani, I. ^{[3
]}

Chandra, Y. ^{[4
]}

Das, R. ^{[5
]}

机构：

[1] Univ Santiago Chile, Dept Ingn Obras Civiles, Estn Cent, Av Ecuador 3659, Santiago, Chile

[2] Univ Southampton, Aeronaut & Astronaut, Southampton SO17 1BJ, Hants, England

[3] Cranfield Univ, Sch Aerosp Transport & Mfg, Ctr Struct Assembly & Intelligent Automat, Cranfield MK43 0AL, Beds, England

[4] Swansea Univ, Coll Engn, Singleton Pk, Swansea SA2 8PP, W Glam, Wales

[5] RMIT Univ, Sch Engn, Sir Lawrence Wackett Aerosp Res Ctr, GPO Box 2476, Melbourne, Vic 3001, Australia

来源：

COMPUTERS & STRUCTURES | 2016年 / 177卷

关键词：

Cross-laminated timber; Multi-scale modelling; Finite elements; Genetic Algorithm; COMPUTATIONAL HOMOGENIZATION; WOOD;

D O I：

10.1016/j.compstruc.2016.08.009

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

In this paper we propose a homogenisation-based four-scale model for the mechanical properties of cross-laminated timber. The spatial scales considered in this study are the wood cell-wall, the wood fibres, growth rings and the structural scale. The computational homogenisation scheme is solved sequently from the lowest to the highest level in order to determine the effective mechanical properties of each material scale. As we are interested in improving the predictions of our computational simulations, we propose an optimisation strategy to calibrate the micro-mechanical parameters. Our numerical predictions are compared with experimental results and are validated successfully. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：83 / 90

页数：8

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