Deformation-assisted joining of tubes to sheets made from dissimilar materials

2020 ◽  
pp. 146442072095910
Author(s):  
Luis M Alves ◽  
Rafael M Afonso ◽  
Paulo AF Martins
Keyword(s):  
Plastic Deformation ◽  
Finite Element ◽  
Dissimilar Materials ◽  
Finite Element Simulations ◽  
Applicability Domain ◽  
Tube Sheet ◽  
Metal Tube ◽  
Lightweight Structures ◽  
Deformation Modes

Following previous developments of the authors on deformation-assisted joining of metal tube-sheet connections by annular sheet squeezing, it is the aim and objective of this paper to extend the process applicability domain to polymers and composites. The presentation includes an overview of the main operative parameters, typical plastic deformation modes and process workability limits. Experiments and finite element simulations allowed comparing the results obtained with dissimilar materials against those earlier obtained with metal tubes and sheets. Results confirm the possibility of combining dissimilar materials in form-fit and force-fit tube-sheet connections for applications in flexible lightweight structures.

scholarly journals Characterizing material liberation of multi-material lightweight structures from shredding experiments and finite element simulations

2021 ◽  
Vol 172 ◽  
pp. 107142
Author(s):  
Magdalena Heibeck ◽  
Martin Rudolph ◽  
Niels Modler ◽  
Markus Reuter ◽  
Angelos Filippatos
Keyword(s):  
Finite Element ◽  
Finite Element Simulations ◽  
Lightweight Structures

Some Plastic Deformation Modes for Indentation of Half Space by a Rigid Body With Serrated Surface as a Model of Roughness Transfer in Metal Forming

2002 ◽  
Vol 124 (2) ◽  
pp. 146-151 ◽  
Author(s):  
Jingyu Shi ◽  
D. L. S. McElwain ◽  
S. A. Domanti
Keyword(s):  
Plastic Deformation ◽  
Finite Element ◽  
Free Surface ◽  
Rigid Body ◽  
Half Space ◽  
Metal Forming ◽  
Forming Process ◽  
Perfectly Plastic ◽  
Metal Forming Process ◽  
Deformation Modes

This paper is concerned with the plastic deformation modes of the free surface of the half space between the teeth on the serrated surface of a rigid body. The rigid body indents the half space perpendicularly and the material of the half space is assumed to be elastic/rigid perfectly plastic. Plane-strain conditions are assumed. The emphasis in this paper is on the profile left on the surfaces of the material when the indentation proceeds to some depth and then the indenter is removed. Based on the observations from finite element results, slip line fields for the plastic deformation regions at various stages of indentation are proposed and the corresponding hodographs for the velocity field are presented. This has application in roughness transfer of final metal forming process.

Finite Element Modeling of Clinching Process for Joining Dissimilar Materials

2015 ◽  
Vol 1115 ◽  
pp. 109-112 ◽  
Author(s):  
M. Eshteyah ◽  
Meftah Hrairi ◽  
M.S. Dawood ◽  
A.K.M. Mohiuddin
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Process Parameters ◽  
Dissimilar Materials ◽  
Finite Element Simulations ◽  
Geometric Parameters ◽  
Blank Holder ◽  
Mechanical Joining ◽  
Metal Parts

Clinching is one of the important new joining techniques, in which two plate metal parts are locally plastically deformed by mechanical interlock. Clinching is a mechanical joining method by using simple tools that consist of a punch, a die, and a blank-holder. The shapes of these tools are the most important parameters that control the final geometry of the clinch joints which in turn strongly affect the strength and quality of the final joint. In this study, finite element simulations are carried out to investigate some of the difficulties regarding the optimization of the process parameters, and major expected geometric parameters that will influence the strength, joinability, and the quality of the joint.

Fracture Response of Girth-Welded Pipeline With Canoe Shape Embedded Crack Subjected to Large Plastic Deformation

2017 ◽  
Vol 139 (2) ◽  
Author(s):  
Lie Seng Tjhen ◽  
Zhang Yao ◽  
Zhao Hai Sheng
Keyword(s):  
Plastic Deformation ◽  
Finite Element ◽  
Internal Pressure ◽  
Structural Integrity ◽  
Biaxial Loading ◽  
Finite Element Simulations ◽  
Critical Parameters ◽  
Large Plastic Deformation ◽  
Long Distance ◽  
Fracture Assessment

Long-distance offshore pipelines always suffer large plastic deformation during installation and operation. Accompanied by high internal pressure, potential flaws are found to initiate from the girth welds, and this brings a significant challenge to the structural integrity of the pipelines. The currently used procedures for fracture assessment of pipelines are usually stress based, which are unsuitable for application to cracked pipeline subjected to large plastic deformation. Therefore, the aim of this paper is to investigate the fracture assessment of pipeline subjected to large plastic deformation and identify and understand the critical parameters influencing the fracture responses under actual loading conditions. The evolution of crack tip opening displacement (CTOD) of a pipeline segment with an embedded canoe shape crack located in the middle of the girth weld is investigated under pure bending and biaxial loading through 3D elastic–plastic finite-element simulations. The effects of crack width, crack length, pipeline thickness, material hardening, and internal pressure on fracture response are discussed. Finally, a strain-based failure assessment diagram (FAD) is developed, and comparison between fracture assessment by BS7910:2013 and finite-element simulations concludes that the former produces conservative predictions for deep crack.

Plastic deformation behaviour of Fe–Cu composites predicted by 3D finite element simulations

2010 ◽  
Vol 48 (3) ◽  
pp. 456-465 ◽  
Author(s):  
Yanling Schneider ◽  
Albrecht Bertram ◽  
Thomas Böhlke ◽  
Christian Hartig
Keyword(s):  
Plastic Deformation ◽  
Finite Element ◽  
Deformation Behaviour ◽  
Finite Element Simulations ◽  
3D Finite Element

Thermomechanical finite element simulations of ultrasonically assisted turning

2005 ◽  
Vol 32 (3-4) ◽  
pp. 463-471 ◽  
Author(s):  
A.V. Mitrofanov ◽  
V.I. Babitsky ◽  
V.V. Silberschmidt
Keyword(s):  
Finite Element ◽  
Finite Element Simulations

scholarly journals Finite element modelling of microstructural changes during equal channel angular drawing of pure aluminium

2021 ◽  
Author(s):  
Serafino Caruso ◽  
Stano Imbrogno
Keyword(s):  
Plastic Deformation ◽  
Grain Size ◽  
Finite Element ◽  
Size Variation ◽  
Fe Model ◽  
Pure Aluminium ◽  
Continuous Dynamic Recrystallization ◽  
Research Activities ◽  
Hardness Change ◽  
Continuous Dynamic

AbstractGrain refinement by severe plastic deformation (SPD) techniques, as a mechanism to control microstructure (recrystallization, grain size changes,…) and mechanical properties (yield strength, ultimate tensile strength, strain, hardness variation…) of pure aluminium conductor wires, is a topic of great interest for both academic and industrial research activities. This paper presents an innovative finite element (FE) model able to describe the microstructural evolution and the continuous dynamic recrystallization (CDRX) that occur during equal channel angular drawing (ECAD) of commercial 1370 pure aluminium (99.7% Al). A user subroutine has been developed based on the continuum mechanical model and the Hall-Petch (H-P) equations to predict grain size variation and hardness change. The model is validated by comparison with the experimental results and a predictive analysis is conducted varying the channel die angles. The study provides an accurate prediction of both the thermo-mechanical and the microstructural phenomena that occur during the process characterized by large plastic deformation.

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