Investigation of the Effect of Using Different Material Models on Finiste Element Simulations of Machining

Published

April 1, 2005

Author(s)

A H. Adibi-Sedeh, M Vaziri, V Pednekar, V Madhavan, Robert W. Ivester

Abstract

Choosing the appropriate constitutive model is important in finite element analysis (FEA) of different metal forming processes.  Due to the presence of high values of strain, strain rate and temperature in machining, it is extremely important to evaluate the performance of different material models, typically developed at much lower strains, strain rates and temperature.  In this study we use coupled thermo-mechanical analysis of machining using ABAQUS/EXPLICIT to model orthogonal machining.  The workpiece material considered is AISI 1045, which is widely used in industry, and is well characterized in the form of different constitutive models.  We have used three different constitutive models proposed for AISI 1045 deforming under high strain rate and temperature, namely, Oxley''s material model, the Johnson-Cook material model, and Maekawa''s history dependent material model.  To have an unbiased comparison of the performance of these materials models, the friction coefficient for each simulation is set to the value that results in closest match of the predicted cutting force to the measured cutting force.  A detailed comparison of the other process outputs of interest, namely, thrust force, chip thickness, shape of the primary and secondary shear zones and temperature distribuitions is scarried out to study the performance of difference material models compared to each other and experimental results.

Proceedings Title

8th CIRP International Workshop on Modeling of Machining Operations

Conference Dates

May 10-11, 2005

Conference Location

Chemnitz, 1, GE

Pub Type

Conferences

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Keywords

Finite element modeling, machining, material mdoeling, orthogonal cutting, turning

Citation

Adibi-Sedeh, A. , Vaziri, M. , Pednekar, V. , Madhavan, V. and Ivester, R. (2005), Investigation of the Effect of Using Different Material Models on Finiste Element Simulations of Machining, 8th CIRP International Workshop on Modeling of Machining Operations, Chemnitz, 1, GE, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=822273 (Accessed April 26, 2024)