Fillet Weld Model for Component-Based Finite Element Method
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F22%3A00358307" target="_blank" >RIV/68407700:21110/22:00358307 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Fillet Weld Model for Component-Based Finite Element Method
Original language description
Component Based Finite Element Method (CBFEM) is used for design of joints. Plates are modelled as shell elements and components, bolts and welds, as nonlinear springs with de-fined initial stiffness, ultimate resistance and deformation capacity. Material model of plates is bilinear with design yield strength and insignificant strain-hardening. The advantage of CBFEM is that the forces in components are determined by finite element method which is closer to reality compared to assumptions taken by Component Method. The first option of weld model between plates is merge of meshes by multi point con-straint (MPC) which relates the finite element nodes of one plate edge to another plate. The advantage of this approach is the possibility to connect meshes with different densities. Stress peaks, which appear at the end of plate edges, in corners and rounding govern the re-sistance along the whole length of the weld. The second option of weld model between plates is adding equivalent elastoplastic solid element. The load distribution in weld is derived from the MPC, so the stresses are cal-culated in the throat section. The element respects the weld throat thickness, position and orientation. The stress peaks are redistributed along the weld length. The aim of design weld models is not to capture real but design behaviour. Residual stresses or weld shrinkage are not studied. Plastic design of welds is controversial but the paper proves that it is in alignment with the directional method in EN 1993-1-8 for regular welds, welding to unstiffened flanges and long welds and CSA S16 for multi-oriented weld groups. Experiments from Stuttgart for longitudinally loaded welds and from Alberta for transversal-ly loaded welds are used for the validation of the weld model. It is shown that the weld mod-el is safe for static loading in the terms of both resistance and ductility.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20101 - Civil engineering
Result continuities
Project
<a href="/en/project/FW01010392" target="_blank" >FW01010392: Advanced design of structural joints/members by machine learning</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
CONNECTIONS IX 9th International Workshop on Connections in Steel Structures
ISBN
978-92-9147-195-9
ISSN
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e-ISSN
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Number of pages
11
Pages from-to
39-49
Publisher name
ECCS/CECM/EKS General Secretariat
Place of publication
Brussel
Event location
Coimbra
Event date
Jun 6, 2022
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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