Search results for: LEUTNER SHEAR TEST

• Shear band evolution phenomena in direct shear test modelled with DEM.

  Publication

  • M. Nitka
  • A. Grabowski

  - POWDER TECHNOLOGY - Year 2021

  A direct shear test is widely used in the geotechnical engineering field. It is an easy and quick test to measure the shear properties of soil. This test often replaces more expensive and difficult tri-axial shear test. Despite that the direct shear test is known and used for a long time, it is still not well investigated at the grain scale. This paper deals with the micro behaviour of the cohesionless sand inside the direct shear...

  Full text available to download

• FE-simulations of a direct and a true simple shear test

  Publication

  • J. Tejchman

  - Powder Handling and Processing - Year 2002

  Porównano dwa aparaty ścinania: aparat bezpośredniego ścinania i aparat prostego ścinania. Analizy pola naprężeń i odkształceń dokonano stosując metodę elementów skończonych i mikropolarne prawo hypoplastyczne. Analiza ta pokazała, że pole naprężeń i odkształceń jest niejednorodne w obu aparatach, szczególnie w aparacie bezpośredniego ścinania.

• FE-simulations of a direct wall shear box test.

  Publication

  • J. Tejchman

  - Year 2004

  W artykule przedstawiono wyniki numerycznej anlizy lokalizacji odkształceń stycznych w materiałach granulowanych podczas bezposredniego ścinania przy ścianie. Obliczenia przeprowadzono z mikropolarnym modelem hipoplastycznym. Obliczenia wykonano w płaskim stanie odkształcenia stosując metodę elementów skończonych. Wyniki numeryczne porównano z wynikami doświadczalnymi.

• Design of poroelastic wearing course with the use of direct shear test

  Publication

  • D. Ryś
  • P. Jaskuła
  • M. Stienss
  • C. Szydłowski

  - Year 2020

  Poroelastic Road Surfaces (PERS) are characterized by porous structure with at least 20% of air void content and stiffness almost 10 times lower than typical asphalt course. Such properties enable noise reduction up to 12 dB in comparison to SMA 11 mixture. However, the main disadvantage of previously used poroelastic mixtures, based on resin type binders, was their low durability, which resulted in raveling and delamination from...

  Full text available to download

• Development and application of asphalt binder relaxation test in different dynamic shear rheometers

  Publication

  • J. Büchner
  • D. Ryś
  • S. Trifunović
  • M. P. Wistuba

  - CONSTRUCTION AND BUILDING MATERIALS - Year 2023

  In this study, a novel relaxation test is proposed to evaluate asphalt binder low temperature properties using a Dynamic Shear Rheometer (DSR) with parallel plates of 4 mm in diameter. Three rheometers from three different manufacturers are used to analyze seven asphalt binders. Different material parameters are derived which are useful to evaluate and discriminate different asphalt binders. Test results of all three instruments...

  Full text to download in external service

• The Use of Direct Shear Test for Optimization of Interlayer Bonding Under a Poroelastic Layer

  Publication

  • P. Jaskuła
  • D. Ryś
  • M. Stienss
  • C. Szydłowski

  - Year 2022

  Poroelastic Road Surfaces (PERS) are characterised by porous structure with air void content of 20% or higher and stiffness almost 10 times lower than that of a standard asphalt course. Such properties enable noise reduction by up to 12 dB in comparison to SMA 11 mixture. However, the disadvantage of a poroelastic pavement is its low durability, which partially results from delamination from the lower layer. The paper aims to investigate...

  Full text to download in external service

• Corrugated Sheeting as a Member of a Shear Panel Under Repeated Load—Experimental Test

  Publication

  • N. Korcz-Konkol
  • P. Iwicki

  - Materials - Year 2020

  In stressed-skin design, the cladding stiffening effect on structures is taken into account. However, the “traditional” design is more usual, wherein this effect is neglected. Even if the diaphragm actions are not regarded, in particular cases such as big sheds (and others), the parasitic (unwanted) stressed-skin action may occur with the result of leakage or even failure. The structures of this kind have already been built. Thus,...

  Full text available to download

• FE-simulations of a direct and a true simple shear test within a polar hypoplasticity

  Publication

  • J. Tejchman
  • E. Bauer

  - Year 2005

  W artykule przedstawiono wyniki numerycznej analizy testu bezpośredniego ścinania i testu prostego ścinania w materiałach granulowanych. Obliczenia wykonano stosując metodę elementów skończonych i mikropolarne hipoplastyczne prawo konstytutywne. W analizie uwzględniono lokalizację odkształceń stycznych.

• Discrete modelling results of a direct shear test for granular materials versus FE results

  Publication

  • J. Kozicki
  • M. Niedostatkiewicz
  • J. Tejchman
  • H. B. Muhlhaus

  - GRANULAR MATTER - Year 2013

  Artykuł porównuje wyniki DEM i MES dla testu bezpośredniego ścinania materiałów granulowanych. Obliczenia MES wykonano przy zastosowaniu mikropolarnego modelu hipoplastycznego. W obliczeniach DEM z kulami i momentami kontaktu zwrócono uwagę na zjawiska mikrostrukturalne w strefie ścinania na poziomie ziaren.

  Full text to download in external service

• Report no: WOiO /II/46/2015 - Construction node verification test, estimation of breaking load (shear force) and destruction form

  Publication

  • J. Kowalski
  • K. Niklas

  - Year 2015

  A new generation of tanks for LNG transportation has been designed. Mass reduction forced our customer to use three different materials: austenitic steel, aluminium alloy and LNG compressed wood between them. The expertise concerns structural node between tank foundation and suspension. Expertise contains: description of object of test, test principals, results and conclusions