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UID:0-569@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20231030T153000

DTEND;TZID=Asia/Jerusalem:20231030T163000

DTSTAMP:20231023T143904Z

URL:https://aerospace.technion.ac.il/events/topology-optimization-of-thin-
 walled-structures/

SUMMARY:Topology optimization of thin-walled structures
DESCRIPTION:Lecturer:Ameer Marzok\n Faculty: Postdoctoral Researcher | The 
 Department of Civil Engineering and Engineering Mechanics\n Institute: Col
 umbia University\n Location:\n Zoom:  https://technion.zoom.us/j/983679316
 61 \n Abstract: Thin-walled structures find applications in various discip
 lines\, including aerospace\, civil\, and mechanical engineering\, thanks 
 to their high stiffness-to-mass ratio. Recent advancements in manufacturin
 g processes\, which enable the production of structural elements with comp
 lex geometries\, have made topology optimization an integral part of the d
 esign process.\n\nThe intricate cross-sections of thin-walled beams result
  in complex deformation modes that are not adequately captured by traditio
 nal beam theories\, especially when torsional behavior is expected. In add
 ition\, these elements are prone to buckling due to their slenderness.\n\n
 In this presentation\, we will discuss a recently developed efficient topo
 logy optimization method for designing these elements. The method relies o
 n a density-based approach that is solved iteratively using an efficient g
 radient-based optimization framework\, allowing for a large number of desi
 gn variables. The optimization problem is formulated considering linearize
 d buckling\, stiffness\, and stress constraints.\n\nThe solution procedure
  of the optimization problem involves a large number of analyses of differ
 ent designs\, making traditional 3D FEM formulations impractical for such 
 a problem. Therefore\, we have developed a novel method for the analysis o
 f these elements consisting of a 3D finite element mesh enhanced with glob
 al enrichment functions\, utilizing the XFEM method. These global enrichme
 nt functions incorporate physical knowledge about the expected behavior of
  the beam\, allowing for a substantial reduction in the computational burd
 en.\n\nThe results demonstrate that the proposed approach allows designing
  these elements while considering various performance constraints.\n Detai
 ls: \n 
CATEGORIES:Seminars

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