Mechanical Strain Modeling by Simulation and Visualization

Utah State University
posted on 08/27/2008

A technological breakthrough developed by USU professors can be used to model and predict material and tool behavior during machining processes for optimized machining processes and improved tool life. The technology has been used to develop a preliminary computer program to provide visualizations of strain and wear on materials and tools.

Suggested Uses

• CNC machining / controllers (Drilling, Milling, Cutting, Lathes, etc.)
• CAD / CAM software
• Machining educational and training programs

Advantages

• Provides more accurate material properties at high strain-rates and temperatures, limiting tool wear and optimizing machining operations
• Provides near real-time modeling, saving time over existing FE methods
• Can be embedded into current CNC software systems, reducing capital expenditures

Innovation Details

Detailed Description

The methodology determines tool-chip friction and stagnation point position on a cutting tool. It includes measuring a cutting force to thrust force ratio and measuring chip thickness produced by applying a cutting tool to a material. Material strains, strain-rates, temperatures, and stresses are calculated from this information. The computer program based on this technology, called Vmachining, allows visualization and simulation of machining processes, and selection of correct machining parameters to produce high-quality products at reduced costs and high productivity.

File Number: W04002

Web site: http://tco.usu.edu/

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