Wall structure finite-element by BEM coupling
by Vincenzo Minutolo; Eugenio Ruocco
International Journal of Masonry Research and Innovation (IJMRI), Vol. 4, No. 1/2, 2019

Abstract: The calculation of structures made of the assembly of several walls requires finite element modelling, henceforth, it gives raise to a large number of degrees of freedom. The actual work shows that the number of parameters is reduced by using boundary elements to derive the stiffness matrix of the element. The proposed technique gives origin to positive definite and symmetrical matrix due to the use of constant boundary elements. Moreover, the resulting matrix can be assembled together with finite element ones in order to obtain the description of complex three dimensional structures. Sub-structuring and multi region modelling are possible and continuity relaxation between elements as well as interface and nonlinear constitutive laws can be comprised. Some examples are reported in order to verify the accuracy and the feasibility of the procedure for the elastic case.

Online publication date: Tue, 13-Nov-2018

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