Ultrahigh-pressure abrasive-waterjets (AWJs) are being developed as net shape and near-net-shape machining tools for hard-to-machine materials. These tools offer significant advantages over existing techniques, including technical, economical, environmental, and safety concerns. Predicting the cutting results, however, is a difficult task and a major effort in this development process. This paper presents a model for predicting the depth of cut of abrasive-waterjets in different metals. This new model is based on an improved model of erosion by solid particle impact, which is also presented. The erosion model accounts for the physical and geometrical characteristics of the eroding particle and results in a velocity exponent of 2.5, which is in agreement with erosion data in the literature. The erosion model is used with a kinematic jet-solid penetration model to yield expressions for depths of cut according to different modes of erosion along the cutting kerf. This kinematic model was developed previously through visualization of the cutting process. The depth of cut consists of two parts: one due to a cutting wear mode at shallow angles of impact, and the other due to a deformation wear mode at large angles of impact. The predictions of the AWJ cutting model are checked against a large database of cutting results for a wide range of parameters and metal types. Materials are characterized by two properties: the dynamic flow stress, and the threshold particle velocity. The dynamic flow stress used in the erosion model was found to correlate with a typical modulus of elasticity for metals. The threshold particle velocity was determined by best fitting the model to the experimental results. Model predictions agree well with experimental results, with correlation coefficients of over 0.9 for many of the metals considered in this study.
Skip Nav Destination
Article navigation
April 1989
Research Papers
A Model for Abrasive-Waterjet (AWJ) Machining
Mohamed Hashish
Mohamed Hashish
Flow Research, Inc., Kent, Wash. 98032
Search for other works by this author on:
Mohamed Hashish
Flow Research, Inc., Kent, Wash. 98032
J. Eng. Mater. Technol. Apr 1989, 111(2): 154-162 (9 pages)
Published Online: April 1, 1989
Article history
Received:
September 9, 1987
Online:
September 15, 2009
Citation
Hashish, M. (April 1, 1989). "A Model for Abrasive-Waterjet (AWJ) Machining." ASME. J. Eng. Mater. Technol. April 1989; 111(2): 154–162. https://doi.org/10.1115/1.3226448
Download citation file:
Get Email Alerts
Study on the Bending Behaviors of a Novel Flexible Re-entrant Honeycomb
J. Eng. Mater. Technol
The Fiftieth Anniversary of the Founding of the ASME Journal of Engineering Materials and Technology
J. Eng. Mater. Technol (July 2023)
Fatigue Damage Study of Steel–Aluminum Friction Stir Welding Joints Based on Equivalent Damage Model
J. Eng. Mater. Technol (October 2023)
Related Articles
A Modeling Study of Metal Cutting With Abrasive Waterjets
J. Eng. Mater. Technol (January,1984)
Stiffness Computation and Identification of Parallel Kinematic Machine Tools
J. Manuf. Sci. Eng (August,2009)
Mechanics of Machining With Chamfered Tools
J. Manuf. Sci. Eng (November,2000)
Experimental Investigation of the Location of Maximum Erosive Wear Damage in Elbows
J. Pressure Vessel Technol (February,2008)
Related Proceedings Papers
Related Chapters
Introduction and Definitions
Handbook on Stiffness & Damping in Mechanical Design
Understanding the Problem
Design and Application of the Worm Gear
Supporting Systems/Foundations
Handbook on Stiffness & Damping in Mechanical Design