Abstract Summary
MultiFEBE is an open-source solver that implements different Boundary-Element and Finite-Element models and strategies to tackle static and time-harmonic problems within the field of computational mechanics. Even though the code is able to address single-domain problems through both the Boundary Element Method or the Finite Element Method, its main strength lies in the possibility of addressing multi-domain coupled problems in which the response of some domains is better represented through some Boundary Element Model, while the response of other domains is best represented through some Finite Element Model, as can be the case in crack propagation problems or in mixed-dimensional problems involving beam or shell structural elements that are embedded in bounded or unbounded two-dimensional or three-dimensional continuous domains. The study of Soil-Foundation problems (such as the computation of impedance and kinematic interaction functions in problems involving pile or suction caisson foundations in viscoelastic or poroelastic stratified soils) or of Soil-Structure Interaction problems such as the computation of the dynamic response of structures founded on flexible soils, are some examples of applications of the latter type. The three types of continuum 2D and 3D regions implement are: inviscid fluids, viscoelastic solids and poroelastic solids, which can interact with discrete translational and translational-rotational springs and dashpots, bars, Euler-Bernoulli and Timoshenko beams, and Reissner-Mindlin structural shells (see [1] and [2] for more details). The code is written in Fortran 2003 and includes parallelization capabilities. User documentation and different tutorials are available together with the source code at a github repository [3]. All the material is released under a GPL 2.0 license, so the community is invited to explore the code, make use of it and take part in its development. This work has been developed with the support of research projects: PID2020-120102RB-I00, funded by the Agencial Estatal de Investigación of Spain, MCIN/AEI/10.13039/ 501100011033; ProID2020010025, funded by Consejerı́a de Economı́a, Conocimiento y Empleo (Agencia Canaria de la Investigación, Innovación y Sociedad de la Información) of the Gobierno de Canarias and FEDER; and BIA2017-88770-R, funded by Subdirección General de Proyectos de Investigación of the Ministerio de Economı́a y Competitividad (MINECO) of Spain and FEDER. REFERENCES [1] J.D.R. Bordón. Coupled model of finite elements and boundary elements for the dynamic analysis of buried shell structures. Doctor Thesis. Universidad de Las Palmas de Gran Canaria. 2018. [2] J.D.R Bordón, J.J. Aznárez, O. Maeso. Dynamic model of open shell structures buried in poroelastic soils. Computational Mechanics 60, 269-288, 2017 [3] J.D.R. Bordón, Á.G. Vega-Artiles, G.M. Álamo, L.A. Padrón, J.J. Aznárez, O. Maeso. MultiFEBE. https://github.com/mmc-siani-es/MultiFEBE (2022).
