The approximate solution of linear differential equations by the use of functionals

dc.contributor.author Thorne, Charles
dc.contributor.department Mathematics
dc.date 2018-08-22T21:28:45.000
dc.date.accessioned 2020-06-30T07:29:28Z
dc.date.available 2020-06-30T07:29:28Z
dc.date.copyright Wed Jan 01 00:00:00 UTC 1941
dc.date.issued 1941
dc.description.abstract <p>The general functional method as it applies to solutions for differential equations is outlined;The equations arrived at by the use of the Ritz, Boussinesq, and Trefftz methods are obtained by the functional method;Other known applications of the functional method are listed;The functional method is used to obtain an approximate solution involving seventeen constants for the deflection of an infinite, corner loaded plate resting on an elastic foundation;The deflection is given for four values of Poisson's ratio and plotted for these values at x = 0, and x = y;Shearing stresses and moments along the lines x = 0, x = y are given and plotted for four values of Poisson's ratio;A discussion of the accuracy of the results is included. An error function is plotted for those original conditions of the problem which are not satisfied within the accuracy of the numerical calculations;An approximate solution of the system of differential equations with an undetermined convergence factor and containing the evaluation of sixteen constant coefficients is given for Poisson's ratio of .2, .25 and .3;An approximate solution of the system of differential equations involving thirty-one unknowns is obtained by means of the functional method and the corresponding set of linear equations is given but not solved. The solution for this set of equations would give a more accurate approximation to the problem.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/rtd/13528/
dc.identifier.articleid 14527
dc.identifier.contextkey 6936671
dc.identifier.doi https://doi.org/10.31274/rtd-180813-14889
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath rtd/13528
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/67016
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/rtd/13528/r_DP12484.pdf|||Fri Jan 14 19:54:59 UTC 2022
dc.subject.disciplines Mathematics
dc.subject.keywords Differential equations
dc.subject.keywords Linear
dc.subject.keywords Functional analysis
dc.subject.keywords Numerical analysis
dc.subject.keywords Applied mathematics
dc.title The approximate solution of linear differential equations by the use of functionals
dc.type article
dc.type.genre dissertation
dspace.entity.type Publication
relation.isOrgUnitOfPublication 82295b2b-0f85-4929-9659-075c93e82c48
thesis.degree.level dissertation
thesis.degree.name Doctor of Philosophy
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