A multi-mechanism model for cutting simulations combining visco-plastic asymmetry and phase transformation

Mahnken, Rolf; Wolff, Michael W.; Cheng, Chun

doi:10.1016/j.ijsolstr.2013.05.008

Cited by 20 publications

(12 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on the concept of generalized stresses in Forest et al [4], we extended a multimechanism model developed in our previous work [9] with a gradient term. This general model has been specialized to the scenario of a cutting process in steel production.…”

Section: Discussionmentioning

confidence: 99%

“…a) and b) show that high stresses and temperatures appear at the cutting edge, and high residual stresses at the chip top. c) shows different stress zones indicated by the stress mode factor, which is introduced in [9], for consideration of the asymmetric effects. Furthermore, the influence of the gradient term for phase transformation is demonstrated.…”

Section: Simulation Of a Cutting Processmentioning

confidence: 99%

“…Based on this theory, we formulate a multi-mechanism model according to [2] as an extension of our previous work [9]. To this end, the previous model is extended by an additional degree oft freedom, the phase fraction.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A multi-mechanism model for cutting simulations based on the concept of generalized stresses

Cheng

Mahnken

2015

Computational Materials Science

Self Cite

View full text Add to dashboard Cite

Abstract. Based on the concept of generalized stresses as proposed by Gurtin [6] and Forest [4], we extend an existing model for strain rate-and temperature-dependent asymmetric plastic material behaviour accompanied by phase transformation with a gradient term of phase fraction. To this end a chemical variable, representing the austenite volume fraction, is treated as an extra degree of freedom, and the influence of its first gradient will be studied. A generalized principle of virtual power is postulated involving generalized stresses and used to derive the constitutive equations. The bulk model is formulated within a thermodynamic framework. For the scenario of a cutting process we have a martensite-austenite-martensite transformation. Finally, a cutting simulation is investigated to test our model and the different mechanisms are illustrated.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Simulation Of a Cutting Processmentioning

confidence: 99%

See 1 more Smart Citation

A multi-mechanism model for cutting simulations based on the concept of generalized stresses

Cheng

Mahnken

2015

Computational Materials Science

Self Cite

View full text Add to dashboard Cite

show abstract

“…2. In the second approach, a multi-mechanism model which considers the inelastic asymmetric effect, phase transformations and TRIP-effects, is formulated for hard turning simulations and parameterized for chrome bearing steel 100Cr6 (AISI 52100) [6,7]. With regard to the rapid thermal-mechanical loading, heating and cooling in cutting processes, two phase transformations are considered, namely, transformation of the martensitic initial state into austenite and reverse formation to martensite.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of different approaches for modeling phase transformations in machining simulation

Schulze

Uhlmann

Mahnken

et al. 2015

Prod. Eng. Res. Devel.

View full text Add to dashboard Cite

Presently, the main mechanism for phase transformations in machining of steels is not absolutely clear and is still subject to research. This paper presents, three different approaches for modeling phase transformations during heating in machining operations. However, the main focus lies on two methods which can be classified into a stress related method and a thermal activation related method for the description of austenitization temperature. Both approaches separately showed very good agreements in the simulations compared to the experimental validation but were never compared in a simulation. The third method is a precalculated phase landscape assigning the transformation results based on a micro-mechanically motivated constitutive model to the workpiece in dependence on the temperature and strain history. The paper describes all three models in detail, and the results are also presented and discussed.

show abstract

“…It further increases the ductility of the steel, due to plastic deformations induced in the ferritic and bainitic phases by a volumetric expansion of the transforming austenitic phase. These two microstructural mechanisms essentially characterize the TRIP-effect, and therefore have been taken into account in various macroscopic and microscopic continuum models developed during the last four decades [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Analysis of banded microstructures in multiphase steels assisted by transformation-induced plasticity

Yadegari

Turteltaub

Suiker

et al. 2014

Computational Materials Science

View full text Add to dashboard Cite

A multi-mechanism model for cutting simulations combining visco-plastic asymmetry and phase transformation

Cited by 20 publications

References 44 publications

A multi-mechanism model for cutting simulations based on the concept of generalized stresses

A multi-mechanism model for cutting simulations based on the concept of generalized stresses

Evaluation of different approaches for modeling phase transformations in machining simulation

Analysis of banded microstructures in multiphase steels assisted by transformation-induced plasticity

Contact Info

Product

Resources

About