Extended Finite Element Method

Jafar Rouzegar

ISBN 10: 3659697303 / ISBN 13: 9783659697302

Published by LAP LAMBERT Academic Publishing Apr 2015, 2015

About this Item

This item is printed on demand - it takes 3-4 days longer - Neuware -In the extended finite element method (XFEM), a standard displacement based finite element approximation is enriched by additional (special) functions using the framework of partition of unity. In the XFEM, the finite element mesh need not conform to the internal boundaries (cracks, material interfaces, voids, etc.), and hence a single mesh suffices for modeling as well as capturing the evolution of material interfaces and cracks. This book mainly focuses on the application of XFEM in modeling dynamic fracture in thin plates and shells. New crack tip enrichment functions are extracted from analytical solutions and several enrichment schemes are introduced for various elements. As an application, the problem of cracked thin tubes under gaseous detonation loading is simulated by the introduced Dynamic-XFEM formulation and the obtained response of the tube to moving detonation loading is compared with ANSYS-LS DYNA results. 88 pp. Englisch.

Seller Inventory # 9783659697302

Bibliographic Details

• Title: Extended Finite Element Method
• Publisher: LAP LAMBERT Academic Publishing Apr 2015
• Publication Date: 2015
• Language: English
• ISBN 10: 3659697303
• ISBN 13: 9783659697302
• Binding: Taschenbuch
• Condition: Neu

About this title

Synopsis

In the extended finite element method (XFEM), a standard displacement based finite element approximation is enriched by additional (special) functions using the framework of partition of unity. In the XFEM, the finite element mesh need not conform to the internal boundaries (cracks, material interfaces, voids, etc.), and hence a single mesh suffices for modeling as well as capturing the evolution of material interfaces and cracks. This book mainly focuses on the application of XFEM in modeling dynamic fracture in thin plates and shells. New crack tip enrichment functions are extracted from analytical solutions and several enrichment schemes are introduced for various elements. As an application, the problem of cracked thin tubes under gaseous detonation loading is simulated by the introduced Dynamic-XFEM formulation and the obtained response of the tube to moving detonation loading is compared with ANSYS-LS DYNA results.