Header

Shop : Details

Shop
Details
48,80 €
ISBN 978-3-8440-7721-6
Paperback
158 Seiten
113 Abbildungen
233 g
21 x 14,8 cm
Deutsch
Dissertation
Dezember 2020
Anton Evdokimov
Numerical laser welding simulation of dissimilar Steel-Aluminum overlap joints
The current dissertation aims to develop an efficient finite element (FE) model for the structural simulation of dissimilar St-Al overlap joints. In particular, a prediction of residual stresses and distortions after welding is of interest. In the thesis, the known computational methods were analyzed and expanded regarding their application for the deep laser welding of dissimilar St-Al joints in steel-on-aluminum overlap configuration. The influence of the mixing in the weld pool on the mechanical properties of the St-Al weld metal and the subsequent influence of the weld on the structural behavior of the joints are the central questions of the study.
The developed temperature FE model enables accurate computation of the temperature distribution in the overlap joint as well as a calculation of fractions of melted alloys in the St-Al weld.
The presented experimental investigation provides the first insight into the elastic-plastic behavior of St-Al weld metal. The mechanical properties were determined using the indentation technique and then correlated to aluminum concentration. Hardness and yield strength showed a nonlinear increase with an increasing aluminum concentration. Young’s modulus and strain hardening exponent were found to be nearly insensitive to changes in weld chemical composition. Based on the obtained relations, the weld material model was designed and coupled with the FE thermomechanical model.
The structural simulations of the St-Al overlap joints were validated on welding experiments through the comparison of measured and computed distortions. The performed sensitivity analyses indicated that the application of the developed weld material model is crucial for achieving reliable accuracy of structural simulations for St-Al joints.
Schlagwörter: Dissimilar steel-aluminum laser welding; Finite element analysis; Heat source model; Indentation, EDS; Thermomechanical simulation
Berichte des Lehrstuhls Füge- und Schweißtechnik der BTU Cottbus-Senftenberg
Herausgegeben von Univ.-Prof. Dr.-Ing. habil. Vesselin Michailov, Cottbus
Band 14
Verfügbare Online-Dokumente zu diesem Titel
Sie benötigen den Adobe Reader, um diese Dateien ansehen zu können. Hier erhalten Sie eine kleine Hilfe und Informationen, zum Download der PDF-Dateien.
Bitte beachten Sie, dass die Online-Dokumente nicht ausdruckbar und nicht editierbar sind.
Bitte beachten Sie auch weitere Informationen unter: Hilfe und Informationen.
 
 DokumentGesamtdokument 
 DateiartPDF 
 Kosten36,60 € 
 AktionZahlungspflichtig kaufen und download der Datei 
     
 
 DokumentInhaltsverzeichnis 
 DateiartPDF 
 Kostenfrei 
 AktionDownload der Datei 
     
Benutzereinstellungen für registrierte Online-Kunden (Online-Dokumente)
Sie können hier Ihre Adressdaten ändern sowie bereits georderte Dokumente erneut aufrufen.
Benutzer
Nicht angemeldet
Export bibliographischer Daten
Shaker Verlag GmbH
Am Langen Graben 15a
52353 Düren
  +49 2421 99011 9
Mo. - Do. 8:00 Uhr bis 16:00 Uhr
Fr. 8:00 Uhr bis 15:00 Uhr
Kontaktieren Sie uns. Wir helfen Ihnen gerne weiter.
Social Media