Year 2023

• W poszukiwaniu równowagi: aplikacja do nauki analizy statycznej układów prętowych

  Publication

  • K. Szepietowska
  • V. Konopińska-Zmysłowska
  • M. Oziębło
  • A. Pestka
  • M. Sondej
  • K. Winkelmann
  • Ł. Żmuda-Trzebiatowski
  • A. Tomaszewska

  - Year 2023

  Praca dotyczy interaktywnej aplikacji mającej wesprzeć naukę analizy statycznej układów prętowych. Aplikacja jest tworzona z myślą o studentach I roku budownictwa i kierunków pokrewnych. Wyznaczenie wykresów sił wewnętrznych jest podstawą procesu projektowania konstrukcji. Chociaż współcześnie stosuje się programy do komputerowej analizy konstrukcji, to projektant nadal musi potrafić zinterpretować wynik i ocenić jego poprawność....

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Year 2020

• Experimental and computational study on mechanical behaviour of carpentry corner log joints

  Publication

  • P. Kłosowski
  • A. Pestka
  • M. Krajewski
  • I. Lubowiecka

  - ENGINEERING STRUCTURES - Year 2020

  This work concerns experimental and numerical research on carpentry joints used in historic wooden buildings in southeastern Poland and western Ukraine. These structures are mainly sacred buildings, and the types of corner log joints characteristic of this region are primarily saddle-notch and dovetail joints; thus, these two types of joints were analysed in this study. The modelling of historic timber structures is a complex...

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Year 2018

• Historical carpentry corner log joints—Numerical analysis within stochastic framework

  Publication

  • P. Kłosowski
  • I. Lubowiecka
  • A. Pestka
  • K. Szepietowska

  - ENGINEERING STRUCTURES - Year 2018

  The paper presents the results of numerical analysis performed on historical, traditional carpentry corner logjoints of two basic topologies: the short-corner dovetail connection and the saddle notch connection. These types of carpentry joints are commonly used in currently preserved objects of wooden architecture. All connections have been modelled in pinewood, which has been defined in the Finite Element software MSC.Marc/Mentat...

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• Influence of Wood Moisture on Strength and Elastic Modulus for Pine and Fir Wood Subjected to 4-point Bending Tests

  Publication

  • A. Pestka
  • P. Kłosowski
  • I. Lubowiecka
  • M. Krajewski

  - IOP Conference Series: Materials Science and Engineering - Year 2018

  The main purpose of this research paper was to determine the influence of the wood moisture on the strength and elastic modulus of pine and fir wood specimens subjected to the 4-point bending tests. Six bending tests for each wood species and for two different moisture level have been performed. Then, the advanced statistical analysis of the results has been carried out. On the basis of the obtained results, it has been noted that...

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• NUMERICAL MODELLING AND EXPERIMENTATION OF HISTORICAL CARPENTRY CORNER LOG JOINTS

  Publication

  • A. Pestka
  • K. Szepietowska
  • P. Kłosowski
  • M. Krajewski
  • I. Lubowiecka

  - Year 2018

  The main purpose of this research is to determine the stress distributions on the contact surfaces between the logs of the historical carpentry corner joints. The additional purpose is to compare the stress distribution for four different boundary conditions in the case of dry and wet pine wood. The paper presents the results of numerical analysis of the shortcorner dovetail connection and the saddle notch corner joint, which are...

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Year 2017

• Identification of Bodner-Partom Viscoplastic Model Parameters for Some Aluminum Alloys at Elevated Temperature

  Publication

  • P. Kłosowski
  • A. Pestka

  - JOURNAL OF MATERIALS IN CIVIL ENGINEERING - Year 2017

  The paper presents the identification process of inelastic (viscoplastic) properties for two aluminum alloys at a temperature of 120°C. The material parameters are calculated on the basis of uniaxial tension tests. Twelve tests at elevated temperature for each alloy have been performed—three tests for four different strain rates. The main purpose of the paper is to identify the Bodner-Partom viscoplastic model parameters for two...

Year 2016

• Numerical analysis of the carpentry joints applied in the traditional wooden structures

  Publication

  • A. Pestka
  • P. Kłosowski

  - Year 2016

  The paper concerns the numerical analysis of the carpentry joints made from spruce wood. The material parameters of the wood have been calculated on the basis of nine independent material constants (an orthotropic material). The contact zone between the individual elements of the connection has been determined using Contact Tables in the MSC.Marc software. Five types of carpentry joints have been analyzed. The main aim of the research...

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Year 2015

• Numerical analysis of cylindrical shell subjected to explosive load

  Publication

  • A. Pestka

  - Year 2015

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Year 2014

• Parameters’ Identification of Perzyna and Chaboche Viscoplastic Models for Aluminum Alloy at Temperature of 120◦C

  Publication

  • P. Kłosowski
  • A. Pestka

  - Engineering Transactions - Year 2014

  The main purpose of this paper is the parameters identification of the Perzyna and the Chaboche models for the aluminum alloy at elevated temperature. The additional purpose is comparison of the results for these viscoplastic models. The results have been verified by the numerical simulation of the laboratory tests. The material parameters have been calculated on the basis of the uniaxial tension test. The determination of the...

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