rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Large static and dynamic deformation of beams
    sub title: the inverse problem
  name:
    name part: McVay, Matilda Wilson.
    role:
      role term: creator
  type of resource: text
  genre: bibliography
  origin info:
    place:
      place term: xx
    date issued: 1996
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: ix, 114 leaves : illustrations ; 28 cm.
  abstract: The primary objective of this study is to establish a methodology for validating a dynamical model of a flexible two beam system undergoing large deformations. This dissertation presents a systematic approach for using a series of experiments to estimate mathematical model parameters and correct them to match the measured response. The study of any dynamical system has a natural partition between the kinetic energy terms and the potential energy terms. By using this natural partition to design a sequence of experiments, it is shown that the number of unknown parameters affecting the system response for any given experiment is greatly reduced. First, a set of static deformations are used to determine beam parameters such as the stiffness coefficients and allow modeling of nonlinear effects. Then, free response experiments are used to determine some motion parameters such as the mass per unit length of each beam and the parameters associated with natural environmental forces such as friction effects. This separation of static and free response measurements allows the recovery of model parameters without being corrupted by other forced system model errors such as joint dynamics and motor modeling which are present in a full dynamic response. A set of dynamic forced response experiments are used to determine motor parameters which model the inputs to the structure. Appropriate statistical estimation methods are utilized to forward propagate a priori and measurement covariance estimates through the sequence of nonlinear estimation processes. Before the parameters can be updated, a novel mathematical model of the system is developed and verified based on an arc length approach to beam deflections. This model accounts for large deformation affects such as foreshortening and is used in the static analysis. A nonlinear finite element model is developed to allow modeling of the free vibration and forced vibration response. This model also allows large deformations of the beam…
  note: by Matilda Wilson McVay.
  note: Vita.
  note: "Major Subject: Aerospace Engineering".
  note: Issued also on microfiche from University Microfilms Inc.
  note: Includes bibliographical references: pages 112-113.
  note: Ph. D. Texas A&M University 1996.
  subject:
    topic: Major aerospace engineering
  identifier: 97-01686 UMI
  identifier: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  record info:
    record content source: TXA
    record creation date: 970508
    record change date: 20190325093258.0
    record identifier: in00001354316