Numerical treatment of contact and friction in FE simulation of forming processes

“…Details of the finite element formulation are available elsewhere [40,32], only the main features are recalled here. The updated Lagrangian scheme is based on a mixed velocity-pressure formulation with an enhanced (P1+/P1) 4-node tetrahedral element.…”

Section: Time Integration Of the Constitutive Law In The Finite Elemementioning

confidence: 99%

“…While (16) and (17) The Newton-Raphson procedure used to solve the finite element problem relies on an algorithmic tangent operator as detailed in [37]. Once a converged velocity field v is obtained at time t, the geometry of the mesh is updated for the next time increment according to : [40].…”

Section: Time Integration Of the Constitutive Law In The Finite Elemementioning

confidence: 99%

Linking plastic deformation to recrystallization in metals using digital microstructures

Logé

Bernacki

Resk

et al. 2008

Philosophical Magazine

View full text Add to dashboard Cite

“…Numerical modelling applied to metal forming processes has given rise to many studies during these last ten years [21][22][23]. The use of coupled damage approaches within the framework of metal forming is more recent [1,2,[24][25][26].…”

Section: Introductionmentioning

confidence: 99%

An enhanced Lemaitre model formulation for materials processing damage computation

et al. 2010

View full text Add to dashboard Cite

ABSTRACT:The Lemaitre damage model is now widely used to deal with coupled damage analyses for various mechanical applications. In this article, different extensions of the model are presented and discussed to deal with complex multiaxial configurations -such as multi-stages bulk forming processes. A specific treatment is done to account for compressive damage growth, and a stress triaxiality cut-off value is considered to avoid any damage evolution below a critical negative triaxiality. The damage potential is also modified to deal with highly ductile materials, and the plastic strain is split into a negative part and a positive part to differentiate damage growth for compressive states of stress and for tensile states of stress. Finally, an anisotropic damage approach based on the comparison between grain flow orientation and principal loading directions is defined. A combination of these extensions is achieved within a single Lemaitre formulation. Application on different examples show the robustness and accuracy of the model defined in this paper.

show abstract

Numerical treatment of contact and friction in FE simulation of forming processes

Cited by 22 publications

References 17 publications

Analysis of quality of bimetallic rod after extrusion process

Analysis of quality of bimetallic rod after extrusion process

Linking plastic deformation to recrystallization in metals using digital microstructures

An enhanced Lemaitre model formulation for materials processing damage computation

Contact Info

Product

Resources

About