IMPROVEMENT OF MODEL OF ALUMINIUM ALLOYS BEHAVIOUR FOR APPLICATION IN NUMERICAL SIMULATIONS OF WELDING

Abstract

This article describes how to modify numerical solutions to enable more accurate prediction of the size of heat affected zones (HAZ) during welding of heat treatable aluminium alloys. The size of HAZ affects properties of a weld joint, such as e.g. hardness and strength, and it is also a factor on residual stress and deformation after welding depends. Welding experiments were performed using material EN AW-6082 to obtain input data for numerical simulations. Calibration thermo-metallurgical numerical analyses were performed using simulation software Sysweld, where data from the standard Sysweld material database were used. Subsequently, based on information from literature and data obtained during welding experiments, some changes of parameters in Leblonds formula (which describes metallurgical transformation in HAZ) were done. The results obtained with modified material database show that it is possible to perform numerical simulations of aluminium welding with significantly more accurate prediction of the size of the HAZ.

Recommended articles

DESIGN OF MECHANICAL FORGING PRESS WITH MAXIMAL FORCE IN SIDE CAVITY

ZDENEK CHVAL, MILAN CECHURA
Keywords: forming machine | mechanical forging press | structural FEM analysis | frame

DESIGN OF PRODUCT SEGMENTATION IN ASSEMBLYLINE

BRANISLAV MICIETA, RADOVAN LIESKOVSKY, VLADIMIRA BINASOVA
Keywords: adaptive assembly processes | segmentation of products | development trends | advanced industrial engineering | production strategy

INFLUENCE OF HYDRAULIC PRESS COLUMNS CONNECTION ON DYNAMIC PROPERTIES

KAREL RAZ, MILAN CECHURA
Keywords: hydraulic press | forging | modal analysis | columns | frequency | finite element method

RISK ANALYSIS OF THE DRINKING WATER SUPPLY SYSTEM OF THE SMALL VILLAGE

JAN RUCKA, TOMAS SUCHACEK
Keywords: drinking water | risk analysis | software | water supply system | case study