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Locking-free two-layer Timoshenko beam element with interlayer slip
ID
Schnabl, Simon
(
Author
),
ID
Saje, Miran
(
Author
),
ID
Turk, Goran
(
Author
),
ID
Planinc, Igor
(
Author
)
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MD5: A922411E1DEF607EE30C682080AD2531
PID:
20.500.12556/rul/474cc297-acd4-4115-8653-973716d634c8
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Abstract
A new locking-free strain-based finite element formulation for the numerical treatment of linear static analysis of two-layer planar composite beams with interlayer slip is proposed. In this formulation, the modified principle of virtual work is introduced as a basis for the finite element discretization. The linear kinematic equations are included into the principle by the procedure, similar to that of Lagrangian multipliers. A strain field vector remains the only unknown function to be interpolated in the finite element implementation of the principle. In contrast with some of the displacement-based and mixed finite element formulations of the composite beams with interlayer slip, the present formulation is completely locking-free. Hence, there are no shear and slip locking, poor convergence and stress oscillations in these finite elements. The generalization of the composite beam theory with the consideration of the Timoshenko beam theory for the individual component of a composite beam represents a substantial contribution in the field of analysis of non-slender composite beams with an interlayer slip. An extension of the present formulation to the non-linear material problems is straightforward. As only a few finite elements are needed to describe a composite beam with great precision, the new finite element formulations is perfectly suited for practical calculations. (c) 2007 Elsevier B.V. All rights reserved.
Language:
English
Keywords:
composite beam
,
interlayer slip
,
Timoshenko beam theory
,
locking
,
finite element method
Typology:
1.01 - Original Scientific Article
Organization:
FGG - Faculty of Civil and Geodetic Engineering
Publisher:
Elsevier
Year:
2007
Number of pages:
Str. 705-714
Numbering:
Letn. 43, Št. 9
PID:
20.500.12556/RUL-32115
UDC:
519.63:624.072
ISSN on article:
0168-874X
DOI:
10.1016/j.finel.2007.03.002
COBISS.SI-ID:
3549025
Publication date in RUL:
10.07.2015
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4989
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Record is a part of a journal
Title:
Finite elements in analysis and design
Shortened title:
Finite elem. anal. des.
Publisher:
Elsevier
ISSN:
0168-874X
COBISS.SI-ID:
579602
Secondary language
Language:
English
Keywords:
kompozitni nosilec
,
zdrs
,
Timoshenkova teorija nosilcev
,
blokiranje
,
metoda končnih elementov
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