Influence of Diameter and Shape Edges of Lightening Holes for Critical Force and Effort of Thin-Walled Girders

• Autorzy: Mańkowski J. , Szymański R. , Klukowski P.
• Języki publikacji: EN

Abstrakty

EN

The thin-walled structures, especially in the girders, holes are often used with a corresponding rib, which are called "lightening holes." This article concerns the impact of these holes on the critical forces and local effort of covering1 material. It presents the results of analyzes of typical two-belt thin-walled girders, with lightening holes. Tests were performed for girders with openings of different diameters and different ways of shaping the edges of the holes: includes three basic types of embossment, and no extrusion. The results were compared with the girders without openings. In the studies taken into account the existence of "spacers" - ribs, which are additional stiffening elements. The analyzes included the most common way of operating this type of construction - the case, where the load works in the plane of girder coverage. Analyzing the results, special attention was paid to the significant increase in the stress concentration caused by the presence of holes.

Słowa kluczowe

EN

tension field; thin walled girder; lightening hole; FEM

• Wydawca: Oficyna Wydawnicza Politechniki Warszawskiej
• Czasopismo: Machine Dynamics Research
• Rocznik: 2016
• Tom: Vol. 40, No. 4
• Strony: 59--70
• Opis fizyczny: Bibliogr. 12 poz., rys., tab., wykr.

Twórcy

autor

Mańkowski J.

• Warsaw University of Technology, Institute of Machine Design Fundamentals

autor

Szymański R.

• Warsaw University of Technology, Institute of Aviation

autor

Klukowski P.

• Warsaw University of Technology, Institute of Machine Design Fundamentals

Bibliografia

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