Identification of the through-thickness properties of thick laminated tubes using the virtual fields method

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作者
Pierron, Fabrice [1 ]
Zhavoronok, Sergei [2 ]
Grédiac, Michel [3 ]
机构
[1] SMS, Département Mécanique et Matériaux, Ecole Nationale Supérieure des Mines de Saint-Etienne, 158, cours Fauriel, 42023, Saint-Etienne, Cedex 2, France
[2] Moscow State Aviation Institute, Technical University, Department 603, 125871, Volokolamskoie shosse 4, Moscow, Russia
[3] LERMES, Université Blaise Pascal, 24, avenue des Landais, 63174, Aubière, Cedex, France
关键词
Computer simulation - Finite element method - Linear equations - Stiffness - Tubes (components);
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摘要
This paper presents a method to determine the four through-thickness stiffnesses of thick laminated composites. Only one specimen submitted to one test is required. The procedure is based on a suitable use of the principle of virtual work with four independent virtual fields. This leads to a system of four linear equations where the through-thickness stiffnesses are the unknowns. The system is finally inverted to determine the stiffnesses. Finite element simulations have been carried out to validate the approach and to show its stability.
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