Wyniki wyszukiwania - Biblioteka Nauki

1

FEM strength analysis of sandwich panels for ship structure applications

100%

Augustyniak M. , Porembski G.

Polish Maritime Research

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2006

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tom S 1

24-26

EN

This paper presents results of the numerical simulation modelling strength tests of laser-welded, foam-filled steel panels, performed by means of the Finite Element Method (FEM) within the frame of the ASPIS project. In this case application of the FEM makes it possible to significantly lower costs of determination of mechanical properties and optimization of the structure respective to its strength-weight ratio. The entire project as well as the presented calculations are aimed at implementing structures of the kind to shipbuilding industry. Results of the calculations modelling axial compression of panels comply with experiments qualitatively. The entire process of the structure’s compression till its collapse resulting from extensive plastic deformation within its middle zone, was step-by-step examined. Also, critical forces causing instability of the structure were determined. A partial quantitative discrepancy of the calculated reaction forces and those experimentally measured, requires further investigations.

2

Simulation of damage process of containership's side structure due to collision with a rock

100%

Porembski G. , Kozak J.

Polish Maritime Research

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2008

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nr Special Issue

EN

This paper presents methods and results of a simplified numerical simulation of collision process of containership’s side structure and a rock. Analysis of results of the modeling makes it possible to draw conclusions as to a character of the event as well as to estimate area and depth of damage caused by the penetrating rock, in order to select geometry of a filler and impermeable layer of 2nd protection barrier

3

FEM strength analysis of sandwich panels for ship structure applications

100%

Augustyniak M. , Porembski G.

Polish Maritime Research

|

2006

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nr Special Issue S1

EN

This paper presents results of the numerical simulation modelling strength tests of laser-welded, foam-filled steel panels, performed by means of the Finite Element Method (FEM) within the frame of the ASPIS project. In this case application of the FEM makes it possible to significantly lower costs of determination of mechanical properties and optimization of the structure respective to its strength-weight ratio. The entire project as well as the presented calculations are aimed at implementing structures of the kind to shipbuilding industry. Results of the calculations modelling axial compression of panels comply with experiments qualitatively. The entire process of the structure’s compression till its collapse resulting from extensive plastic deformation within its middle zone, was step-by-step examined. Also, critical forces causing instability of the structure were determined. A partial quantitative discrepancy of the calculated reaction forces and those experimentally measured, requires further investigation

4

Simulation of damage process of containership’s side structure due to collision with a rock

100%

Porembski G. , Kozak J.

Polish Maritime Research

|

2008

|

tom S 1

18-21

EN

This paper presents methods and results of a simplified numerical simulation of collision process of containership’s side structure and a rock. Analysis of results of the modeling makes it possible to draw conclusions as to a character of the event as well as to estimate area and depth of damage caused by the penetrating rock, in order to select geometry of a filler and impermeable layer of 2nd protection barrier.

5

FEM Simulation of the FSW Process of Heat Exchanger Components

80%

Pikula J. , Kwieciński K. , Porembski G. , Pietras A.

Biuletyn Instytutu Spawalnictwa w Gliwicach

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2016

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tom Vol. 60, No. 3

23--29

EN

The paper presents results of the FEM simulation of FSW process. The object of the research was a heat exchanger used for cooling of electrical components of propulsion systems. The tests enabled the obtainment of the field of temperature, stresses and displacements during the process and residual stresses and displacements of welded elements after cooling. Knowledge of the thermal conditions of the process, the stress and strain fields were used while designing clamps and pads of a welding stand for the welding of the heat exchanger components.

PL

Przedstawiono wyniki symulacji MES procesu zgrzewania metodą FSW. Obiektem badań był wymiennik ciepła stosowany do chłodzenia elektrycznych elementów układów napędowych. Uzyskano pola temperatury, naprężenia i przemieszczenia w trakcie procesu oraz naprężenia pozostające i odkształcenia po wychłodzeniu zgrzanych elementów. Wiedzę o warunkach cieplnych procesu, naprężeniach i odkształceniach wykorzystano przy opracowywaniu konstrukcji uchwytów i podkładek stanowiska przeznaczonego do zgrzewania elementów chłodnicy.

6

FEM Simulation of Check Valve Ball FSW Process

80%

Pikuła J. , Kwieciński K. , Porembski G. , Pietras A.

Biuletyn Instytutu Spawalnictwa w Gliwicach

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2014

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tom Vol. 58, No. 6

23--29

EN

The article presents results of the FEM simulation involving friction stir welding (FSW) of check valve ball elements. The tests involved the obtainment of temperature fields, information about stresses and displacements during the process and about residual stresses and strains following the cooling of elements welded. The knowledge obtained concerning process thermal conditions and that concerning the field of stresses and strains was used to design clamps of a station intended for welding check valve ball elements.

PL

Przedstawiono wyniki symulacji MES procesu zgrzewania metodą FSW elementów kuli zaworu zwrotnego. Uzyskano pola temperatury, naprężenia i przemieszczenia w trakcie procesu oraz naprężeń pozostających i odkształcenia po wychłodzeniu zgrzanych elementów. Wiedzę o warunkach cieplnych procesu, pola naprężeń i odkształcenia wykorzystano przy opracowywaniu konstrukcji uchwytów stanowiska przeznaczonego do zgrzewania elementów kuli zaworu zwrotnego.