Temperature calculation in cutting zones

Möhring, Hans‐Christian; Kushner, Valerii; Storchak, Michael; Stehle, Thomas

doi:10.1016/j.cirp.2018.03.009

Cited by 37 publications

(14 citation statements)

References 9 publications

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“…The specific characteristic of the material deformation and the subsequent material breaking during the cutting in heterogeneous shearing processes is that areas with different states of stress-strain arise and thus with a considerably different deformation in corresponding cutting zones [35], [36], [38]. In the same way, the temperature of the material in the cutting zones and their areas differs considerably [22], [39], [43]. Under certain cutting conditions, this leads to a hardening of the material as well as to a softening of the material among other things.…”

Section: Methodology For Identifying Thermal Propertiesmentioning

confidence: 99%

“…Naturally, it made sense to choose that cutting zone or that area of the zone in which there is a constant temperature distribution, the measuring point is as accessible as possible and the measuring process itself is comfortable on the whole. A constant temperature distribution depends basically on a homogeneous stress-strain state of the material [38], [39], [40]. A homogeneous stress-strain state of the work material and a resulting constant temperature occurs in those cutting zones with predominantly adiabatic deformation conditions leading to material hardening or isothermal deformation conditions leading to material softening.…”

Section: Methodology For Identifying Thermal Propertiesmentioning

confidence: 99%

“…The temperature distribution within the primary zone, inside the area bounded by the indicated temperature isolines (see Fig. 1), is approximately constant compared with the temperature distribution in the secondary and tertiary cutting zones, in which there is a temperature gradient of up to 5 °C/µm [13], [39], [42], [43].…”

Section: Methodology For Identifying Thermal Propertiesmentioning

confidence: 99%

“…The temperature of the deformed material in the primary cutting zone was in proportion to the specific deformation work [38], [39]:…”

Section: Methodology For Identifying Thermal Propertiesmentioning

confidence: 99%

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Determination of thermal material properties for the numerical simulation of cutting processes

Storchak

Stehle

Möhring

2021

Int J Adv Manuf Technol

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Thermal properties of work materials, which depend significantly on the change in cutting temperature, have a considerable effect on thermal machining characteristics. Therefore, the thermal properties used for the numerical simulation of the cutting process should be determined depending on the cutting temperature. To determine the thermal properties of the work materials, a methodology and a software-implemented algorithm were developed for their calculation. This methodology is based on analytical models for the determination of tangential stress in the primary cutting zone. Based on this stress and experimentally or analytically determined cutting temperatures, thermal properties of the work material were calculated, namely the coefficient of the heat capacity as well as the coefficient of thermal conductivity. Three variants were provided for determining the tangential stress: based on the normal stress calculated using the Johnson-Cook constitutive equation, based on the experimentally determined cutting and thrust forces as well as by directly calculating the tangential stress. The thermal properties were determined using the example of three different materials: AISI 1045 and AISI 4140 steel as well as Ti10V2Fe3Al titanium alloy (Ti-1023). With the developed FE cutting model, the deviation between experimental and simulated temperature values ranged from approx. 7.5% to 14.4%.

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Section: Methodology For Identifying Thermal Propertiesmentioning

confidence: 99%

Section: Methodology For Identifying Thermal Propertiesmentioning

confidence: 99%

Section: Methodology For Identifying Thermal Propertiesmentioning

confidence: 99%

“…The temperature of the deformed material in the primary cutting zone was in proportion to the specific deformation work [38], [39]:…”

Section: Methodology For Identifying Thermal Propertiesmentioning

confidence: 99%

See 2 more Smart Citations

Determination of thermal material properties for the numerical simulation of cutting processes

Storchak

Stehle

Möhring

2021

Int J Adv Manuf Technol

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“…The temperature T AB which arises due to the plastic deformation in the primary shear zone and is used for establishing the coefficients of correction K T can be determined with the following equation [16,33,36,42]:…”

Section: Methodology For Identifying the Parameters Of Constitutive Ementioning

confidence: 99%

Determination of Johnson–Cook Constitutive Parameters for Cutting Simulations

Storchak

Rupp

Möhring

et al. 2019

Metals

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The Johnson–Cook constitutive equation is very widely used for simulating cutting processes. Different methods are applied for establishing parameters of the constitutive equation. Based on the methods analysed in this study, two algorithms were worked out to determine the constitutive parameters for the prevailing conditions during cutting processes. In the first algorithm, all constitutive parameters were established simultaneously with standardized test methods. In the second algorithm, the constitutive parameters were established separately in accordance with the cutting conditions prevailing in machining processes. The developed methodology was verified with AISI 1045 heat-treatable steel and Ti10V2Fe3Al (Ti-1023) titanium alloy. The two materials were examined in standardized tensile and compression tests with varying strain rates and temperatures. In addition, the kinetic characteristics of the orthogonal cutting process were established. Based on the results obtained by experiment and the algorithms developed, the constitutive parameters for the cutting conditions were calculated. The parameters were used to determine the material model for simulating the orthogonal cutting process. The algorithms developed were verified by comparing the simulated and experimentally determined kinetic cutting characteristics, which confirmed their good quality.

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Simulation of the Teeth Profile Shaping During the Finishing of Gears

Storchak

2020

New Approaches to Gear Design and Production

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Temperature calculation in cutting zones

Cited by 37 publications

References 9 publications

Determination of thermal material properties for the numerical simulation of cutting processes

Determination of thermal material properties for the numerical simulation of cutting processes

Determination of Johnson–Cook Constitutive Parameters for Cutting Simulations

Simulation of the Teeth Profile Shaping During the Finishing of Gears

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