Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Finite element analysis of thin-walled structures subjected to impact loading
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Material- och solidmekanik.ORCID-id: 0000-0001-7074-8960
1988 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

This thesis is devoted to the numerical solution of dynamic problems involving thin-walled structures. Special consideration is paid to the effects of contact-impacts. Thus, the main effort is concentrated on studies, development and computer program implementations of efficient algorithms for analysis of dynamically loaded shell structures, including contact-impacts and severe structural deformation. Recent developments in the formulation of efficient finite elements for dynamically loaded shell structures are studied. A program implementation of a low-order four-node shell element with uniformly reduced integration is performed. The efficiency and the behaviour of this element type are compared with existing shell and solid elements implemented in the same program system. Hourglass resisting algorithms are reviewed and formulated, and parameter studies are carried out. A new contact interface algorithm for dynamic analysis with explicit integration is presented. The development of the defence node algorithm permits contact constraints based on the Lagrange multiplier method to be introduced in dynamic analysis with explicit integration. Numerical tests show the good performance of the developed algorithms. A new global search method for general contacting systems is developed and implemented in a computer program together with the abovementioned contact interface algorithm. The concept of position codes for efficient global contact searching and the local search procedure used are presented. Numerical experiments are performed in order to examine the behaviour of the algorithms in different aspects.

Ort, förlag, år, upplaga, sidor
Luleå: Luleå tekniska universitet, 1988. , s. 10
Serie
Doktorsavhandling / Högskolan i Luleå, ISSN 0348-8373 ; 69
Nationell ämneskategori
Teknisk mekanik
Forskningsämne
Hållfasthetslära
Identifikatorer
URN: urn:nbn:se:ltu:diva-18666Lokalt ID: 9b3308a0-f29a-11db-bb1b-000ea68e967bOAI: oai:DiVA.org:ltu-18666DiVA, id: diva2:991676
Anmärkning
Godkänd; 1988; 20070424 (ysko)Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2017-11-24Bibliografiskt granskad

Open Access i DiVA

fulltext(31327 kB)88 nedladdningar
Filinformation
Filnamn FULLTEXT01.pdfFilstorlek 31327 kBChecksumma SHA-512
af6bda3fa1961646da68d6543c99df93cbe2f962c9324fd89e41ac5691a972ffcb46614eff36c75d53d8113108cd0c53c875549e3738d3aa44e23c8ea44cbcd6
Typ fulltextMimetyp application/pdf

Personposter BETA

Oldenburg, Mats

Sök vidare i DiVA

Av författaren/redaktören
Oldenburg, Mats
Av organisationen
Material- och solidmekanik
Teknisk mekanik

Sök vidare utanför DiVA

GoogleGoogle Scholar
Totalt: 88 nedladdningar
Antalet nedladdningar är summan av nedladdningar för alla fulltexter. Det kan inkludera t.ex tidigare versioner som nu inte längre är tillgängliga.

urn-nbn

Altmetricpoäng

urn-nbn
Totalt: 68 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf