A VISION SYSTEM TO SUPPORT DETERMINATION OF MECHANICAL PROPERTIES OF TUBES REQUIRED FOR COMPUTER MODELLING OF TUBE HYDROFORMING
Journal Title: Computer Methods in Materials Science - Year 2016, Vol 16, Issue 1
Abstract
Reliability of computer modelling of tube hydroforming depends strongly on mechanical properties of tubes, which are difficult to determine and sensitive to tube production methods. Some developments in experimental set-up and the vision system for tensile tests of specimens cut from the tube in the axial and circumferential directions are presented. The high accuracy of results obtained by this system has been crucial for determining strains in the tested tubes as well as flow curves for tube material and its planar anisotropy
USING NEURAL NETWORKS TO PREDICT THE FLOW CURVES AND PROCESSING MAPS OF TNM-B1
The ability to predict the behavior of a material is vital in both science and engineering. Traditionally, this task has been carried out using physics-based mathematical modeling. However, material behavior is dependent...
SIMULATION OF MICROSTRUCTURE EVOLUTION DURING FORGING AND HEAT TREATMENT OF Ti-6Al-3.5Mo-1.5Zr-0.3Si TITANIUM ALLOY
The model of dynamic recrystallization of Ti-6Al-3.5Mo-1.5Zr-0.3Si has been developed based on experimental data and implemented in FEM code QForm. Kinetics of dynamic recrystallization was simulated by Johnson-Mehl-Avra...
THE HIGHEST ENTROPY PRODUCTION DURING DIFFUSION
In the present paper, the theory of the highest entropy production is discussed. It allows to predict, which phases will grow during the multiphase ternary interdiffusion process. Moreover, the theory says, that phase wi...
EXPERIMENTAL AND NUMERICAL INVESTIGATIONS FOR THE CHARACTERISATION OF FLOW BEHAVIOUR OF HYBRID STRUCTURES PRODUCED BY NON-KINEMATICAL CONSTRAINT MANUFACTURING PROCESSES
With regard to the challenges in the automotive production sector, caused by political regulations of CO2 emissions, lightweight concepts are focussed by industrial development. Fibre reinforced plastics (FRP) represent...
USING THE HYPERGRAPH GRAMMAR FOR GENERATION OF QUASI OPTIMAL ELEMENT PARTITION TREES IN TWO DIMENSIONS
The paper presents the graph grammar model of Finite Element Method allowing for speeding up performed numerical simulations. In the presented approach, the finite element mesh operations are performed together with oper...