Ivan Arango
EAFIT University
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Publication
Featured researches published by Ivan Arango.
Archive | 2015
Giorgio Anfuso; Nelson Rangel-Buitrago; Ivan Arango
This work deals with the evolution of Bocas de Ceniza-Puerto Caiman, Galerazamba, Isla Cascajo and Punta Canoas coastal sectors, located along the 120 km-long coastline between the Magdalena River mouth and Cartagena de Indias, on the Caribbean coast of Colombia. Comparisons of coastline morphology from reliable ancient charts, modern bathymetric surveys and remote sensing data, show major changes (in some cases at kilometre-scale) related to the rapid erosion and formation of offshore sandy shoals, spits and beaches. These sediment bodies are linked to sediment supply from the Magdalena River. In 1935, after the emplacement of two jetties at the river mouth, sediment was channelled offshore and erosion ensued on the western part of the Magdalena delta. Spits and sandy shoals rapidly migrated down drift. As a result, a spit at Puerto Colombia – present on the 1935 and 1947 aerial photograms – progressively diminished and merged with the coastline between 1953 and 1959. South of this location, a new spit formed before 2000 and it presently shelters a marina at Puerto Velero.
International Journal of Bifurcation and Chaos | 2009
Ivan Arango; John Alexander Taborda
In this paper, we present a novel method to analyze the behavior of discontinuous piecewise-smooth autonomous systems (denominated Filippov systems) in the planar neighborhood of the discontinuity boundary (DB). The method uses the evaluation of the vector fields on DB to analyze the nonsmooth local dynamics of the Filippov system without the integration of the ODE sets. The method is useful in the detection of nonsmooth bifurcations in Filippov systems. We propose a classification of the points, events and events combinations on DB. This classification is more complete in comparison with the others previously reported. Additional characteristics as flow direction and sliding stability are included explicitly. The lines and the points are characterized with didactic symbols and the exclusive conditions for their existence are based on geometric criterions. Boolean-valued functions are used to formulate the conditions of existence. Different problems are analyzed with the proposed methodology.
Entropy | 2014
John Alexander Taborda; Ivan Arango
In this paper, we propose a novel strategy for the synthesis and the classification of nonsmooth limit cycles and its bifurcations (named Non-Standard Bifurcations or Discontinuity Induced Bifurcations or DIBs) in n-dimensional piecewise-smooth dynamical systems, particularly Continuous PWS and Discontinuous PWS (or Filippov-type PWS) systems. The proposed qualitative approach explicitly includes two main aspects: multiple discontinuity boundaries (DBs) in the phase space and multiple intersections between DBs (or corner manifolds—CMs). Previous classifications of DIBs of limit cycles have been restricted to generic cases with a single DB or a single CM. We use the definition of piecewise topological equivalence in order to synthesize all possibilities of nonsmooth limit cycles. Families, groups and subgroups of cycles are defined depending on smoothness zones and discontinuity boundaries (DB) involved. The synthesized cycles are used to define bifurcation patterns when the system is perturbed with parametric changes. Four families of DIBs of limit cycles are defined depending on the properties of the cycles involved. Well-known and novel bifurcations can be classified using this approach.
Archive | 2016
Ivan Arango; Juan Felipe Paniagua-Arroyave
The Arboletes -Punta Rey littoral is a 5.5-km-long stretch of coast located at the southern Caribbean coast of Colombia, 80 km by car (paved road) to Monteria . Geologically, it is located at terrains of the Sinu folded belt, a tectonically active sedimentary wedge evolving under the morphogenetic influence of numerous onshore and offshore manifestations of mud diapirism. It has a tropical climate. During the dry season (December–April), the zone is under the influences of the N–NE Trade winds that generate swells with wave periods between 6 and 9 s and significant wave heights up to 2 m. These waves are strongly modified by the serrated contours of the coastline and are rapidly eroding the beaches and littoral rocky formations of the area. During the wet season, the trade winds are replaced by lighter, 2–4 m/s, S to SW winds that generate seas with significant wave heights of up to 0.6 m. Net sand drift during the year in the area is toward the SW. The Arboletes -Punta Rey landscape is configured by an emerged marine terrace, a diapiric dome with active mud volcanoes, and by cliffs and their associated erosional features including caves, arches, stacks, and scarps of mass movements. These features are cut on sedimentary, highly weathered and densely fractured mudstones and shales, and in poorly consolidated diapiric muds. Besides its geomorphological interest, the Arboletes littoral is an interesting example of historical, kilometric-magnitude erosional coastline changes driven by the combination of natural- and man-induced causes including, in a short-term perspective, the poor geotechnical properties of rocks, bioerosion, absence of rainfall and waste waters management, strong wave action, beach sand mining, and inadequate coastal engineering practices.
Tecno Lógicas | 2010
Ivan Arango; Fabio Pineda
This paper presents the results of several investigations related with the development of technology to design and manufacture of CNC machines, to cut fabric layers for small workshops. The development responds to the need for industry to access to fractional production machines with low operating costs. From various points of view, the solution has introduced new design factors. The first, the reversal of the dynamics of fabric layers. Another involves the cutting actuator, which was not built to suit the machine, but was the result of a design to enable the integration of commercial actuators used in manual processes. The equipment received the CAD/CAM software from other investigations in the same group. The machine, for its innovations, received rights from the patent office of Colombia.
international conference on systems | 2008
Ivan Arango; John Alexander Taborda
international conference on modelling identification and control | 2008
Ivan Arango; John Alexander Taborda
MATH'08 Proceedings of the American Conference on Applied Mathematics | 2008
Ivan Arango; John Alexander Taborda
American Journal of Computational Mathematics | 2013
Ivan Arango; Fabio Pineda; Oscar E. Ruiz
Dyna | 2011
Ivan Arango; John Alexander Taborda; Gerard Olivar