Efficient PGD-based dynamic calculation of non-linear soil behavior Claudia Germoso José Vicente Aguado Alberto Fraile Enrique Alarcón Francisco Chinesta Parametric statistics Discretization Response analysis Finite element method Hysteresis Applied mathematics Mathematics Modal analysis Basis (linear algebra) Mathematical analysis Structural engineering Engineering Physics Geometry Statistics Non-linear behavior of soils during a seismic event has a predominant role in current site response analysis. Soil response analysis consistently indicates that the stress–strain relationship of soils is non-linear and shows hysteresis. When focusing on forced response simulations, time integrations based on modal analysis are widely considered; however, parametric analysis, non-linear behavior and complex damping functions make difficult the online use of standard discretization strategies, e.g., those based on the use of finite element. In this paper, we propose a new harmonic analysis formulation, able to address forced response simulation of soils exhibiting their characteristic non-linear behavior. The solution can be evaluated in real-time from the offline construction of a parametric solution to the associated linearized problem within the Proper Generalized Decomposition framework. 2016 fr info:eu-repo/semantics/article journal-article https://doi.org/10.1016/j.crme.2015.09.002 Comptes Rendus - Mecanique Comptes Rendus - Mecanique urn:issn:1873-7234 urn:issn:1631-0721 Comptes Rendus - Mecanique, 2016, vol. 344, n. 1, p. 24-41 info:eu-repo/semantics/openAccess openAccess cc-by-nc-nd https://doi.org/10.1016/j.crme.2015.09.002 Q2 doaj Life in Land Instituto Tecnológico de Santo Domingo https://www.intec.edu.do/portal From standard to fractional structural visco-elastodynamics: Application to seismic site response Claudia Germoso A. Fraile Enrique Alarcón José Vicente Aguado Francisco Chinesta Viscoelasticity Flexibility (engineering) Fractional calculus Frequency response Amplitude Phase angle (astronomy) Viscous damping Mathematics Mechanics Mathematical analysis Computer science Physics Engineering Vibration Acoustics 2017 en info:eu-repo/semantics/article journal-article https://doi.org/10.1016/j.pce.2016.01.005 Physics and Chemistry of the Earth Physics and Chemistry of the Earth urn:issn:1474-7065 urn:issn:1873-5193 Physics and Chemistry of the Earth, 2017, vol. 98, p. 3-15 info:eu-repo/semantics/openAccess openAccess cc-by-nc-nd http://oa.upm.es/46113/ Q2 Life in Land Instituto Tecnológico de Santo Domingo https://www.intec.edu.do/portal Seismic vulnerability assessment of buried pipelines: A 3D parametric study Claudia Germoso Omar Rodríguez González Francisco Chinesta Pipeline transport Parametric statistics Pipeline (software) Computer science Representation (politics) Vulnerability (computing) Parametric model Civil engineering Engineering Petroleum engineering Structural engineering Mathematics Mechanical engineering Computer security Pipeline structural analysis is a well-developed topic in engineering and research practice. Since water, oil or gas pipeline systems are a key part of modern development, therefore, it is important to ensure an appropriate behavior under seismic action. In this paper, the seismic response of buried pipelines is numerically simulated using a three-dimensional (3D) parametric model of soil-pipeline interaction. The role of several parameters on both soil and pipeline are incorporated into a 2D-1D space separated representation based on the Proper Generalized Decomposition (PGD) framework, which allows addressing 3D parametric problems while reducing the computational complexity of 1D and 2D characteristic problems. These results can be used for design, safety evaluation and protection of buried pipelines crossing seismic area and can be calculated in real time from the parametric solution of the associated problem within the PGD framework. 2021 en info:eu-repo/semantics/article journal-article https://doi.org/10.1016/j.soildyn.2021.106627 Soil Dynamics and Earthquake Engineering Soil Dynamics and Earthquake Engineering urn:issn:0267-7261 urn:issn:1879-341X Soil Dynamics and Earthquake Engineering, 2021, vol. 143, p. 106627 info:eu-repo/semantics/openAccess openAccess cc-by-nc-nd https://www.sciencedirect.com/science/article/pii/S026772612100049X/pdf Q1 Instituto Tecnológico de Santo Domingo https://www.intec.edu.do/portal Nonlinear Soil Response via Harmonic-Modal Hybrid Approach Claudia Germoso Francisco Chinesta Juan Aracena Nonlinear system Modal Harmonic Harmonic analysis Acoustics Computer science Materials science Physics Engineering Electronic engineering Composite material Non-linear behaviour of soils during a seismic event has a predominant role in current site response analysis.Soil response analysis consistently indicates that the stress-strain relationship of soils is non-linear and shows hysteresis.An equivalent linearization method, in which non-linear characteristics of shear modulus and damping factor of soils are modeled as equivalent linear relations of the shear strain is usually applied, but this assumption, however, may lead to a conservative approach of the seismic design.In this paper, we propose a new harmonic analysis formulation, able to address forced response simulation of soils exhibiting their characteristic nonlinear behavior.A possibility for represent this non-linear analysis consist in combining modal and harmonic analysis for defining an hybrid integration scheme. 2020 en info:eu-repo/semantics/conferenceObject proceedings-article https://doi.org/10.11159/icgre20.128 The World Congress on Civil, Structural, and Environmental Engineering The World Congress on Civil, Structural, and Environmental Engineering urn:issn:2371-5294 The World Congress on Civil, Structural, and Environmental Engineering, 2020 info:eu-repo/semantics/openAccess openAccess https://doi.org/10.11159/icgre20.128 Instituto Tecnológico de Santo Domingo https://www.intec.edu.do/portal A 2D Nonlinear Soil Response Based On the Influence of Vertical Component in Near-Fault Conditions Claudia Germoso Luis Placeres Armando Lucio Simonelli Augusto Penna Diletta Aliperti Component (thermodynamics) Nonlinear system Fault (geology) Geology Environmental science Computer science Geotechnical engineering Seismology Physics Thermodynamics 2023 en info:eu-repo/semantics/conferenceObject proceedings-article https://doi.org/10.11159/icgre23.112 The World Congress on Civil, Structural, and Environmental Engineering The World Congress on Civil, Structural, and Environmental Engineering urn:issn:2371-5294 The World Congress on Civil, Structural, and Environmental Engineering, 2023 info:eu-repo/semantics/openAccess openAccess https://doi.org/10.11159/icgre23.112 Instituto Tecnológico de Santo Domingo https://www.intec.edu.do/portal Seismic Vulnerability Assessment of the Municipality of Santo Domingo Este, Dominican Republic Claudia Germoso Omar González José Muñóz B. Benito Beknur Omarbekov Vulnerability (computing) Vulnerability assessment Geography Seismology Political science Computer science Geology Computer security Psychology 2023 en info:eu-repo/semantics/conferenceObject proceedings-article https://doi.org/10.11159/icgre23.129 The World Congress on Civil, Structural, and Environmental Engineering The World Congress on Civil, Structural, and Environmental Engineering urn:issn:2371-5294 The World Congress on Civil, Structural, and Environmental Engineering, 2023 info:eu-repo/semantics/openAccess openAccess https://doi.org/10.11159/icgre23.129 Climate action Instituto Tecnológico de Santo Domingo https://www.intec.edu.do/portal Local Seismic Response Analysis Based On the Non-Linear Soil Behavior. Application to 5 Essential Buildings in Santiago de los Caballeros Claudia Germoso Rafael Marmolejos Alnura Omarbekova Computer science Environmental science Architectural engineering Geology Engineering 2023 en info:eu-repo/semantics/conferenceObject proceedings-article https://doi.org/10.11159/icgre23.138 The World Congress on Civil, Structural, and Environmental Engineering The World Congress on Civil, Structural, and Environmental Engineering urn:issn:2371-5294 The World Congress on Civil, Structural, and Environmental Engineering, 2023 info:eu-repo/semantics/openAccess openAccess http://dx.doi.org/10.11159/icgre23.138 Instituto Tecnológico de Santo Domingo https://www.intec.edu.do/portal Respuesta sísmica local de la presa Las Dos Bocas utilizando un análisis no lineal Claudia Germoso Juan Aracena Humanities Physics Geomorphology Geology Philosophy Ingeniería sísmica Presas Uno de los problemas más importantes y comúnmente encontrados en la ingeniería sísmica es la evaluación de la respuesta del terreno donde se ubicala edificación. La respuesta dinámica del suelo es un fenómeno sumamente complejo, que depende de un gran número de variables, tanto de las propiedades del mismo suelo como de la excitación a la que se encuentre sometida. El comportamiento no lineal del suelo durante un evento sísmico tiene un papel predominante en el análisis actual de la respuesta del sitio, lo que indica que su relación esfuerzo-deformación es no lineal e histerética, debido a esto, el enfoque lineal debe ser modificado para proporcionar estimaciones razonables de respuesta del terreno para los problemas prácticos de interés. En el presente artículo se muestra la influencia, en el análisis de la respuesta sísmica local de la presa de tierra "Las Dos Bocas", ejercida al considerar distintas excitaciones sísmicas, así como las propiedades dinámicas del suelo en función del nivel de deformación inducido. Demostramos cómo la no linealidad puede afectar la amplificación del suelo en función de diferentes fuentes de excitación. Aquí, el comportamiento no lineal con un enfoque en la respuesta del sitio 1-D se desarrolla aplicando un método iterativo para lograr la aproximación lineal equivalente del suelo, basada en las propiedades no lineales del material. 2019 es info:eu-repo/semantics/article journal-article https://doi.org/10.22206/cyap.2019.v2i1.pp7-32 Ciencia, Ingenierías Y Aplicaciones Ciencia, Ingenierías Y Aplicaciones urn:issn:2636-2171 urn:issn:2636-218X Ciencia, Ingenierías Y Aplicaciones, 2019, vol. 2, n. 1, p. 7-32 info:eu-repo/semantics/openAccess openAccess cc-by-nc-sa https://revistas.intec.edu.do/index.php/cite/article/download/1505/2100 Instituto Tecnológico de Santo Domingo https://www.intec.edu.do/portal Harmonic-Modal Hybrid Reduced Order Model for the Efficient Integration of Non-Linear Soil Dynamics Claudia Germoso Jean Louis Duval Francisco Chinesta Nonlinear system Parametric statistics Response analysis Modal Shear modulus Soil water Mathematics Applied mathematics Control theory (sociology) Mathematical analysis Structural engineering Computer science Engineering Geology Physics Materials science Soil science Nonlinear behavior of soils during a seismic event has a predominant role in current site response analysis. Soil response analysis, and more concretely laboratory data, indicate that the stress-strain relationship of soils is nonlinear and exhibits hysteresis. An equivalent linearization method, in which non-linear characteristics of shear modulus and damping factor of soils are modeled as equivalent linear relations of the shear strain is usually applied, but this assumption, however, may lead to a conservative approach of the seismic design. In this paper, we propose an alternative analysis formulation, able to address forced response simulation of soils exhibiting their characteristic nonlinear behavior. The proposed approach combines ingredients of modal and harmonic analyses enabling efficient time-integration of nonlinear soil behaviors based on the offline construction of a dynamic response parametric solution by using Proper Generalized Decomposition (PGD)-based model order reduction technique. 2020 en info:eu-repo/semantics/article journal-article https://doi.org/10.3390/app10196778 Applied Sciences Applied Sciences urn:issn:2076-3417 Applied Sciences, 2020, vol. 10, n. 19, p. 6778 info:eu-repo/semantics/openAccess openAccess cc-by https://www.mdpi.com/2076-3417/10/19/6778/pdf?version=1601203442 Q2 doaj Life in Land Instituto Tecnológico de Santo Domingo https://www.intec.edu.do/portal Data Completion, Model Correction and Enrichment Based on Sparse Identification and Data Assimilation Claudia Germoso Daniele Di Lorenzo Victor Champaney Elías Cueto Francisco Chinesta Minification Computer science Algorithm Displacement (psychology) Stiffness Identification (biology) Data assimilation Matrix (chemical analysis) Mathematical optimization Mathematics Structural engineering Engineering Many models assumed to be able to predict the response of structural systems fail to efficiently accomplish that purpose because of two main reasons. First, some structures in operation undergo localized damage that degrades their mechanical performances. To reflect this local loss of performance, the stiffness matrix associated with the structure should be locally corrected. Second, the nominal model is sometimes too coarse grained for reflecting all structural details, and consequently, the predictions are expected to deviate from the measurements. In that case, there is no small region of the model that needs to be repaired, but the entire domain needs to be repaired; therefore, the entire structure-stiffness matrix should be corrected. In the present work, we propose a methodology for locally correcting or globally enriching the models from collected data, which is, upon its turn, completed beyond the sensor’s location. The proposed techniques consist in the first case of an L1-minimization procedure that, with the support of data, aims at the same time period to detect the damaged zone in the structure and to predict the correct solution. For the global enrichment, instead, the methodology consists of an L2-minimization procedure with the support of measurements. The results obtained showed, for the local problem, a correction up to 90% with respect to the initially incorrectly predicted displacement of the structure, and for the global one, a correction up to 60% was observed (this results concern the problems considered in the present study, but they depend on different factors, such as the number of data used, the geometry or the intensity of the damage). The benefits and potential of such techniques are illustrated on four different problems, showing the large generality and adaptability of the methodology. 2022 en info:eu-repo/semantics/article journal-article https://doi.org/10.3390/app12157458 Applied Sciences Applied Sciences urn:issn:2076-3417 Applied Sciences, 2022, vol. 12, n. 15, p. 7458 info:eu-repo/semantics/openAccess openAccess cc-by https://www.mdpi.com/2076-3417/12/15/7458/pdf?version=1658910992 Q2 doaj Instituto Tecnológico de Santo Domingo https://www.intec.edu.do/portal Non-Intrusive In-Plane-Out-of-Plane Separated Representation in 3D Parametric Elastodynamics Claudia Germoso Giacomo Quaranta Jean Louis Duval Francisco Chinesta Discretization Parametric statistics Polygon mesh Simple (philosophy) Degrees of freedom (physics and chemistry) Representation (politics) Computer science Plane (geometry) Algorithm Software Parametric model Intrusiveness Theoretical computer science Applied mathematics Mathematical optimization Mathematics Geometry Mathematical analysis Computer graphics (images) Physics Mesh-based solution of 3D models defined in plate or shell domains remains a challenging issue nowadays due to the fact that the needed meshes generally involve too many degrees of freedom. When the considered problem involves some parameters aiming at computing its parametric solution the difficulty is twofold. The authors proposed, in some of their former works, strategies for solving both, however they suffer from a deep intrusiveness. This paper proposes a totally novel approach that from any existing discretization is able to reduce the 3D parametric complexity to the one characteristic of a simple 2D calculation. Thus, the 3D complexity is reduced to 2D, the parameters included naturally into the solution, and the procedure applied on a discretization performed with a standard software, which taken together enable real-time engineering. 2020 en info:eu-repo/semantics/article journal-article https://doi.org/10.3390/computation8030078 Computation Computation urn:issn:2079-3197 Computation, 2020, vol. 8, n. 3, p. 78 info:eu-repo/semantics/openAccess openAccess cc-by https://doi.org/10.3390/computation8030078 Q2 doaj Peace, Justice and strong institutions Instituto Tecnológico de Santo Domingo https://www.intec.edu.do/portal Analysis of liquid impact phenomena affecting rain erosion failure in wind turbine blades. A viscoelastic parametric study 2019 info:eu-repo/semantics/conferenceObject proceedings-article cris:cris-8b1e10cb ECCM 2018 - 18th European Conference on Composite Materials ECCM 2018 - 18th European Conference on Composite Materials ECCM 2018 - 18th European Conference on Composite Materials, 2019 Instituto Tecnológico de Santo Domingo https://www.intec.edu.do/portal Advances in real-time dynamic PGD calculation of non-linear soil behavior. A fractional parametric study 2019 info:eu-repo/semantics/article journal-article cris:cris-a08d3c43 Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions Earthquake Geotechnical Engineering for Protection and Development of Environment and Constructions, 2019 Instituto Tecnológico de Santo Domingo https://www.intec.edu.do/portal