On geometry and kinematics of abrasive processes: The theory of aggressiveness
Journal article, 2020

Due to the stochastic nature of the abrasive-tool topography, abrasive processes are difficult to model and quantify. In contrast, their macro geometry and kinematics are usually well defined and straightforwardly controlled on machine tools. To reconcile this seeming contradiction, a novel unifying modelling framework is defined through the theory of aggressiveness. It encompasses the arbitrary geometry and kinematics of a workpiece moving relative to an abrasive surface. The key parameter is the point-aggressiveness, which is a dimensionless scalar quantity based on the vector field of relative velocity and the vector field of abrasive-surface normals. This fundamental process parameter relates directly to typical process outputs such as specific energy, abrasive-tool wear and surface roughness. The theory of aggressiveness is experimentally validated by its application to a diverse array of abrasive processes, including grinding, diamond truing and dressing, where the aggressiveness number is correlated with the aforementioned measured process outputs.








Drazumeric Radovan

International Grinding Institute

Chalmers, Industrial and Materials Science, Materials and manufacture

University of Ljubljana

Jeffrey Badger

The Grinding Doc Consulting

International Grinding Institute

Roope Roininen

Scania CV AB

Peter Krajnik

Chalmers, Industrial and Materials Science, Materials and manufacture

International Journal of Machine Tools and Manufacture

0890-6955 (ISSN)

Vol. 154 103567

Subject Categories

Production Engineering, Human Work Science and Ergonomics

Applied Mechanics

Manufacturing, Surface and Joining Technology

Areas of Advance




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