Open AccessMechanical Properties and Their Quantification Particularly When Transiting from Elastic to Plastic State on Materials Cut by AWJ
Author(s) -
Marek Šafář,
Marta Harničárová,
Milena Kušnerová,
Ján Valíček
Publication year - 2018
Publication title -
technologické inžinierstvo/technological engineering
Language(s) - English
Resource type - Journals
eISSN - 2451-3156
pISSN - 1336-5967
DOI - 10.1515/teen-2018-0019
Subject(s) - materials science , surface roughness , stress (linguistics) , deformation (meteorology) , abrasive , stress–strain curve , plane stress , ultimate tensile strength , surface finish , composite material , mechanical engineering , structural engineering , finite element method , engineering , philosophy , linguistics
Mechanical behaviour of materials during and after cutting process is depended on various factors. Surface topography is set of factors including mechanical and geometrical properties. From the surface topography, it is possible to resolve the transition from ideally elastic to quasi-elastic and plastic stress-strain states, particularly by finding a neutral plane of cut, where the compressive and tensile components are still in equilibrium. The paper solves the problem of the nonexistence of a new method for calculation of dynamics of stress-deformation states of deformation tool-material systems including the construction of stress-strain diagrams. The presented solution focuses on explaining the mechanical behavior of materials after cutting by abrasive waterjet technology (AWJ) which is a flexible tool accurately responding to the mechanical resistance of the material according to the accurately determined shape and roughness of machined surfaces. Theoretical results were compared by a certified laboratory VUHZ.