Abstract
A thermo-elastic plastic element model, in conjunction with an experimental flow stress strain curve, is applied to a cutting process. The flow stress is considered as a function of strain, strain rate and temperature in order to simulate a more realistic situation. A coupled thermo-elastic—plastic finite-element model was applied to the orthogonal cutting process. A pre-honed land simulating tool flank wear was constructed. The cutting tool is advanced incrementally in a step-by-step process from the incipient stage of tool—workpiece engagement to the steady state of chip formation. A numerical technique of gradually reducing displacement was developed to deal with a new generative node to contact with the tool flank. An initial study for describing the friction phenomenon (such as ‘sticking’) and a numerical technique were developed also.
Published Version
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