Rok 2023

• Analysis of the Possibilities of Applying 3D Print Methods for the Needs of Ship-Building Industry

  Publikacja

  • K. Jasiński
  • M. Chodnicki
  • K. Bobrowski
  • K. Lipiński
  • M. Kluczyk
  • A. Szeleziński

  - Rok 2023

  Article presents the analysis of applying additive and hybrid manufacturing methods and its impact on dynamic stiffness of prepared samples. Dynamic analysis of the handle bracket specimens consisted in plotting the resonance curves and using these curves to estimate the dynamic stiffness of elements produced with additive manufacturing technology. Authors focused especially on 3D print in Fused Deposiotion Modeling/Fused Filament...

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Rok 2022

• Metody analizy wytrzymałości konstrukcji wykonanych za pomocą technologii przyrostowej FDM i ich zastosowanie do warunków pracy przekładek okien podwodnych

  Publikacja

  • K. Bobrowski

  - Rok 2022

  Drukowanie 3D to technologia wytwarzania fizycznego obiektu poprzez nanoszenie kolejnych warstw materiału. W pracy zaprezentowano szereg badań eksperymentalnych i numerycznych, mających na celu zbadanie wpływu ułożenia włókien wydruku na jego własności mechaniczne. Analiza otrzymanych wyników prowadzi do wniosku, że wytrzymałość wydruku uzależniona jest od wielu parametrów druku, takich jak wysokość warstwy, kąt ułożenia włókien,...

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• Multi-layered mineral glass units used as viewport elements of underwater ship structures

  Publikacja

  • K. Lipiński
  • K. Bobrowski
  • E. Wittbrodt
  • B. Szarejko
  • E. Ziółkowski

  - Rok 2022

  In the paper, Authors deals with viewport elements of underwater marine constructions. If a single-plate viewport constructions are considered, big thicknesses of the glass plate are required to resist the pressure. To build the viewports from the commercially accessible glass panes, multi-layered glass units are proposed in the paper. Numerical calculations are presented, summarized and compared with experimental tests. Focusing...

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Rok 2019

• Rigid finite elements and multibody modeling in analyses of a robot shaped elastic/plastic deformations of a beam

  Publikacja

  • K. Lipiński
  • K. Bobrowski
  • E. Wittbrodt

  - Rok 2019

  Dynamics analysis of a system composed of a parallel manipulator and of an elastic beam is presented in the paper. Classic 3RRR parallel manipulator is considered and used to deform the beam. Elasto-plastic deformations are investigated. Rigid-finite-elements technique is employed to deal with dynamics of the beam. A multibody structure is associated with the introduced hybrid system in order to model its dynamics. Idea of the...

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Rok 2018

• Numerical analysis of mechanical properties of an infill structure used in 3D printings

  Publikacja

  • K. Bobrowski
  • W. Wojnicz
  • K. Lipiński

  - Inżynieria Materiałowa - Rok 2018

  The paper presents results of a numerical analysis focused on an identification of mechanical properties of an element created by using Fused Deposition Modelling additive manufacturing technique (FDM). There is presented a description of technology of the 3D printing, numerical model created by using the finite element method (FEM), as well as some problems referred to estimation of the mechanical properties of the printout. The...

Rok 2017

• Numerical modelling of 3D printout using line (1D) elements

  Publikacja

  • K. Bobrowski
  • W. Wojnicz
  • K. Lipiński

  - Rok 2017

  A proposition of some numerical modelling of the 3D printout is presented in the paper. The proposed model is composed of some 1D elements. The resulting numerical model of the infill consist of beam, spring and rigid elements. Obtained results confirm correctness of the proposed modelling method. Two methods of estimation of the spring parameters are proposed in the paper. In the first method, mechanical properties of the connecting...