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UID:0-207@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20220525T133000

DTEND;TZID=Asia/Jerusalem:20220525T143000

DTSTAMP:20230403T121602Z

URL:https://aerospace.technion.ac.il/events/modal-rotations-a-modal-based-
 method-for-large-structural-deformations/

SUMMARY:Modal Rotations: A Modal-based Method for Large Structural  Deforma
 tions
DESCRIPTION:Lecturer:Ariel Drachinsky\n Faculty:Department of Aerospace Eng
 ineering\n Institute:Technion – Israel Institute of Technology\n Locatio
 n:Classroom 165\, ground floor\, Library\, Aerospace Eng. & https://techni
 on.zoom.us/j/92330966203\n Zoom: \n Abstract: \n Details: \n Modern flight
  configurations are trending towards slender wings of larger wingspans and
  lower structural weight. New designs are driven by performance requiremen
 ts (reduction of fuel consumption\, or flight at the boundary of the atmos
 phere\, for example) as well as by innovations in softer materials (such a
 s polymers used in rapid prototyping). These result in configurations that
  are lighter but more flexible than before. For very flexible configuratio
 ns\, the industry-standard computational formulations based on linear stru
 ctural models are no longer adequate. Consequently\, novel\, nonlinear str
 uctural models are being developed for the aeroelastic analysis of structu
 res that experience large deformations. Due to their complexity\, nonlinea
 r structural models tend to be either limited to simple geometries (beams\
 , for example) or highly detailed and computationally expensive (nonlinear
  finite-element models). The study presents the derivation and applicatio
 n of the Modal Rotation Method (MRM)\, a nonlinear framework for the
  static and flutter analysis of highly flexible\, slender wing-like stric
 tures accounting for large deformations. It uses a linear modal database
  which makes it easy to use\, and computationally efficient. The framewo
 rk is used both for the analysis of slender structures under prescribed fl
 ight conditions and as a part of a nonlinear strain-based shape sensing al
 gorithm. The talk will focus on the MRM formulation and its validation\, b
 oth numerically and experimentally\, with several test cases including th
 e Pazy wing aeroelastic benchmark for large deformations\, and will then b
 riefly present the MRM strain-based a shape sensing application.
CATEGORIES:Seminars
LOCATION:Classroom 165\, ground floor\, Library\, Aerospace Eng. & https://
 technion.zoom.us/j/92330966203

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