Naslov
Computer Simulation of Mechanical Properties, Stresses and Strains of Quenched Steel Specimen

Autori
Smoljan, Božo

Izvornik
Journal of Achievements in Materials and Manufacturing Engineering (1734-8412) 19 (2006), 2; 81-85

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Analysis and Modelling; Numerical Techniques; Computer Simulation; Quenching

Sažetak
Purpose: The research purpose is to upgrade the mathematical modelling and computer simulation of thermal processing of materials. Design/methodology/approach: Based on theoretical analyze of physical processes which exist in quenching systems the proper mathematical model is established and computer software is developed. Findings: On the basis of control volume method the algorithm for prediction of hardness distribution, residual stresses and strains in quenched steel specimens with complex geometries have been established. The mathematical model of steel hardening is consisted of numerical calculation of temperature field change in process of cooling, and of numerical simulation of hardness. The hardness has been predicted by the conversion of calculated time of cooling from 800º C to 500º C to hardness results, using the Jominy hardenability curve. Research limitations/implications: The algorithm is completed to solve 2-D situation problems such as the quenching of complex cylinders, cones, spheres, etc. Surface heat transfer coefficient was obtained by the calibration. Practical implications: The established model of steel quenching could be successfully in the practice of heat treatment. Originality/value: The established method in efficient approach combines the no expensive experimental Jominy-test and computer simulation in prediction of mechanical properties and behaviour of steel during the quenching.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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