Browsing Vitenskapelige publikasjoner (TN-IMBM) by Author "Trzepiecinski, Thomasz"
Now showing items 1-9 of 9
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Effect of Lubrication on Friction in Bending under Tension Test-Experimental and Numerical Approach
Trzepiecinski, Thomasz; Lemu, Hirpa G. (Peer reviewed; Journal article, 2020)This paper is aimed to determine the value of coefficient of friction (COF) at the rounded edge of the die in the sheet metal forming operations using the bending under tension (BUT) test. The experimental part of the ... -
Effect of Pressing Parameters on the Quality of Joint Formation of Heat Exchanger Fins with the Base Plate
Marek, Kowalik; Trzepiecinski, Thomasz; Lemu, Hirpa G. (Peer reviewed; Journal article, 2019)In this paper, the results of experimental and numerical studies on joining the thin fins to the thick base plate of a heat exchanger are presented. The elements of the heat exchanger were joined by using developed method ... -
FEM-based assessment of wear of stamping die
Trzepiecinski, Thomasz; Lemu, Hirpa G. (Peer reviewed; Journal article, 2019)In sheet metal forming industry, surface damage and wear such as adhesion and ploughing of metallic sheet, is a well-known problem which reduces the tool life and quality of drawn elements. Surface defects are the consequences ... -
Finite element method-based modeling of bending under tension friction test of deep drawing quality steel sheets
Trzepiecinski, Thomasz; Lemu, Hirpa G. (Peer reviewed; Journal article, 2019)Understanding of the effect of the friction on the sheet deformation is a key factor in design and realization of stamping process. Among others, bending under tension friction test simulates the frictional phenomena on ... -
Improving Prediction of Springback in Sheet Metal Forming Using Multilayer Perceptron-Based Genetic Algorithm
Trzepiecinski, Thomasz; Lemu, Hirpa G. (Peer reviewed; Journal article, 2020)This paper presents the results of predictions of springback of cold-rolled anisotropic steel sheets using an approach based on a multilayer perceptron-based artificial neural network (ANN) coupled with a genetic algorithm ... -
Numerical analysis of the influence of friction conditions on the pile-up effect in Vickers hardness measurements
Trzepiecinski, Thomasz; Lemu, Hirpa G. (Peer reviewed; Journal article, 2019)Vickers indentation load-depth curve may be used to determine basic mechanical properties of metallic materials such as hardness, yield stress, modulus of elasticity, and elastic and plastic work. The pile-up phenomenon ... -
Prediction of springback in the air V-bending of metallic sheets
Trzepiecinski, Thomasz; Lemu, Hirpa G. (Peer reviewed; Journal article, 2019)Springback is a critical phenomenon in design and analysis of sheet metal forming process of metallic sheets. An accurate prediction of elastic recovery of material allows to design forming tools which take into account ... -
Recent developments and trends in the friction testing for conventional sheet metal forming and incremental sheet forming
Trzepiecinski, Thomasz; Lemu, Hirpa G. (Peer reviewed; Journal article, 2020)Friction is the main phenomenon that has a huge influence on the flow behavior of deformed material in sheet metal forming operations. Sheet metal forming methods are one of the most popular processes of obtaining finished ... -
A Three-Dimensional Elastic-Plastic Contact Analysis of Vickers Indenter on a Deep Drawing Quality Steel Sheet
Trzepiecinski, Thomasz; Lemu, Hirpa G. (Peer reviewed; Journal article, 2019)Three-dimensional finite element-based numerical analysis of Vickers indenter hardness test was conducted to investigate the effect of frictional conditions and material anisotropy on indentation results of deep drawing ...