PAULECH, J., GOGA, V., VÁRY, M.: Various solutions to determine cooling of electric copper conductor with PVC insulation 1 TESAR, A.: Tuned vibration control in aeroelasticity of slender carbon fiber vs laminated wood bridges 17 GOGA, V.: Determination of plane stress using finite element method and by experimental measurement 38 CHMELKO, V., KRÁK, P.: The elasto-plastic state solution of a heavy-wall cylindrical pressure vessel using bilinear stress-strain model. Part 1: Derivation of analytical relations 51 CHMELKO, V., ULKO, M., GARAN, M.: The elasto-plastic state solution of a heavy-wall cylindrical pressure vessel using bilinear stress-strain model. Part 2: Application - calculation and verification of the burst pressure of the vessel 63
J. PAULECH, V. GOGA, M. VÁRY
This paper deals with calculation of cooling process of electric Cu conductor with PVC insulation. Various types of solutions were performed. Analytical solution considers free convection and radiation effects during heat transfer. Numerical solution was performed by Finite Element Method (FEM) using software ANSYS Workbench, and fluid flow solution was performed by Computational Fluid Dynamics (CFD) analysis with software ANSYS CFX. All obtained results were compared with results of the experimental measurement.
The paper presents the use of finite element method to assess the strength of the structure in the state of plane stress. Determination of plane stress was performed by static structural finite element analysis, by finite element simulation of strain gauge measurement, and by experimental measurement. Thin aluminium specimen with specific shape was tested. Results of finite element analyses and simulations were compared with experimental measurements results.
V. CHMELKO, P. KRÁK
This article presents the solution of an elastic-plastic state of a heavy-wall cylindrical pressure vessel. The solution is based on the constant volume theorem for a plastic strain process where as a material model a bilinear model for the stress-strain intensity is considered. In this paper, terms of stresses in the wall of a heavy-wall cylindrical pressure vessel with flat bottoms (without reducing the wall thickness) were derived using the bilinear material model without considering the influence of pipeline shell nearby the bottom of the vessel.
V. CHMELKO, M. ULKO, M. GARAN
This article presents the derivation of analytical solution of the burst pressure of cylindrical vessel with hardening material model. The material model is considered a bilinear model for stress-strain intensity. Solution is based on the constant volume theorem for plastic strain process. Derived analytical equations have been verified by experimental measurement on pipe models in laboratory and also by the numerical modelling using the Finite Element Method. The experimental results comply with analytical solution.