Determination of Constitutive Equation Parameters for Orthogonal Cutting through Pressure Bar Tests and FEA Method

B. Lan; Ping Fa Feng; Z.J. Wu; D.W. Yu

doi:10.4028/www.scientific.net/KEM.499.56

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 499Determination of Constitutive Equation Parameters...

Determination of Constitutive Equation Parameters for Orthogonal Cutting through Pressure Bar Tests and FEA Method

Abstract:

This paper proposes a method of determining the constitutive equation parameters of a Japanese type of alloy steel (SCM440H) for Finite Element Analysis (FEA) of orthogonal cutting, involving pressure bar experiments, orthogonal metal cutting experiments and FEA inverse identification. First, Split Hopkinson Pressure Bar (SHPB) experiments combined with Quasi-Static pressure tests were conducted, and after analyzing and processing the experimental data, one set of original constitutive constants was obtained; in the mean time, orthogonal cutting experiments were also performed to collect the cutting force data. Then the original constants were put into FEA software to simulate the cutting process. But comparison between the orthogonal cutting experimental and the simulation results revealed the inadequacy for the constants to predict cutting forces. To address this problem, an inverse identification method was employed to optimize the constants iteratively. And after a certain number of iterations, the ideal parameters for FEA of the orthogonal cutting process were finally determined.

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Periodical:

Key Engineering Materials (Volume 499)

Pages:

56-61

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.499.56

Citation:

Cite this paper

Online since:

January 2012

Authors:

B. Lan, Ping Fa Feng, Z.J. Wu, D.W. Yu

Keywords:

Inverse Identification, Johnson-Cook Equation Parameters, Orthogonal Cutting, SHPB

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