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RISTime-Varying Tool-Chip Contact in the Cutting Mechanics of Shear Localization
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Shear localization is the dominant chip formation mechanism in machining of high-performance metallic components, such as those made of titanium and nickel-based alloys. This paper presents an analytical thermo-mechanical ...
Frictional Damage Mechanism for Matrix Failure in Cutting Unidirectional CFRP
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In machining carbon fiber–reinforced polymer (CFRP) materials of different fiber orientations, the uncut material fracture occurs at different chip formation angles owing to either the fiber-dominated failure or matrix ...
Chatter Stability Model of Micro Milling With Process Damping
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents the prediction of cutting forces and chatter stability of micromilling operations from the material's constitutive flow stress and structural dynamics of the microend mill. The cutting force coefficients ...
Effects of Failure Criteria on Quantitatively Determining the Machining Mechanics for CFRP With Different Tool Rake Angles
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The machining mechanics of carbon fiber reinforced polymer (CFRP) materials are influenced by the coupled effects of the workpiece anisotropy, tool edge geometry, and cutting parameters. Predicting the chip formation ...
Mechanism of Chip Segmentation in Orthogonal Cutting of Zr-Based Bulk Metallic Glass
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: Bulk metallic glasses (BMGs) are a series of metal alloys with an amorphous structure. The deformation of BMGs occurs in localized regions and is highly sensitive to the applied stress, strain rate, and temperature. This ...
A Real-Time C3 Continuous Tool Path Smoothing and Interpolation Algorithm for Five-Axis Machine Tools
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Local corner smoothing method is commonly adopted to smooth linear (G01) tool path segments in computer numerical control (CNC) machining to realize continuous motion at transition corners. However, because of the highly ...
Dynamic Modeling of Aerostatic Spindle With Shaft Tilt Deformation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents a new dynamic model of aerostatic spindle including the journal and thrust bearings. Reynolds equations are used to model the dynamics of a 4-degree-of-freedom (DOF) aerostatic journal bearing and a ...
Effect of Shear Localization on Surface Residual Stress Distribution in Machining of Waspaloy
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In the machining of high-strength materials, shear localization in serrated chip formation leads to time-varying thermo-mechanical loads exerted by the cutting tool on the machined surface. This results in periodic changes ...
A New Cutting Mechanics Model for Improved Shear Angle Prediction in Orthogonal Cutting Process
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In metal cutting processes, accurately determining the shear angle is essential, as it governs chip formation and cutting force generation. Despite extensive research conducted on this topic, the accurate prediction of the ...
A General Method for the Dynamic Modeling of Ball Bearing–Rotor Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A general dynamic modeling method of ball bearing–rotor systems is proposed. Gupta's bearing model is applied to predict the rigid body motion of the system considering the threedimensional motions of each part (i.e., ...