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dc.date.accessioned2013-03-12T08:18:07Z
dc.date.available2013-03-12T08:18:07Z
dc.date.issued2001en_US
dc.date.submitted2011-05-31en_US
dc.identifier.urihttp://hdl.handle.net/10852/10205
dc.description.abstractIn the present report we describe the geometrically nonlinear method for orthotropic (composite) materials that is implemented using the commercial C++ library Diffpack. The implementation is based on a module dealing with linear elasticity for isotropic materials, and the modifications performed to extend the functionality to handle orthotropic materials are explained. Analysis of composite joints is one of the main aims of the module. Such joints typically fail for laminate strains in the order of 1-2%, which indicates that sufficient accuracy may be obtained by a geometrically linear procedure. However, for non-symmetric geometries, e.g. single lap joints, geometrically nonlinear effects become crucial for loads far below ultimate strength limits. Thus, in order to be able to analyse such joints accurately, the code is extended with functionality capturing geometrically nonlinear effects. In addition to the description of the extended functionality, the report covers some verification of the code. It is tested on a couple of examples, showing reasonable results in all cases. It should also be mentioned that in a previous study solutions obtained by the present module were in excellent agreement with ANSYS results.eng
dc.language.isoengen_US
dc.publisherMatematisk Institutt, Universitetet i Oslo
dc.relation.ispartofPreprint series. Mechanics and Applied Mathematics http://urn.nb.no/URN:NBN:no-23418en_US
dc.relation.urihttp://urn.nb.no/URN:NBN:no-23418
dc.rights© The Author(s) (2001). This material is protected by copyright law. Without explicit authorisation, reproduction is only allowed in so far as it is permitted by law or by agreement with a collecting society.
dc.titleImplementation of a Geometrically Nonlinear Module for Composite Materials in Diffpacken_US
dc.typeResearch reporten_US
dc.date.updated2012-01-19en_US
dc.rights.holderCopyright 2001 The Author(s)
dc.creator.authorOsnes, Haralden_US
dc.subject.nsiVDP::410en_US
dc.identifier.urnURN:NBN:no-27815en_US
dc.type.documentForskningsrapporten_US
dc.identifier.duo126789en_US
dc.identifier.fulltextFulltext https://www.duo.uio.no/bitstream/handle/10852/10205/1/mech-05-01.pdf


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