Baza Publikacji Pracowników Politechniki Lubelskiej

Status:
Autorzy:	Rzeszut Katarzyna, Dybizbański Maciej A., Szewczak Ilona, Różyło Patryk
Rok wydania:	2022
URL do źródła	LINK
Język:	angielski
Źródło:	24th International Conference on Computer Methods in Mechanics (CMM) and the 42nd Solid Mechanics Conference (SolMech)
Miasto wystąpienia:	Świnoujście
Państwo wystąpienia:	POLSKA
Efekt badań statutowych	NIE
Abstrakty:	angielski
	The article presents selected issues related to the reinforcement of a cold-formed steel element with CFRP wraps and tapes. The first part of the article deals with the basics of cold-formed thin-walled steel elements and CFRP composite materials with special focus on steel market and its future prospects. Economic analysis was carried out based on literature, professional media and market trends review. In the second part, the authors present original research on the strengthening of thin-walled sigma steel beams with the use of several numerical models prepared to represent the failure mechanism. The main aim of the study is verification and validation of FEM numerical model of steel beams made of thin-walled cold-rolled Blachy Pruszyński sigma profile retrofitted by CFRP wraps and tapes Sika CarboDur S. Very important part of this study is focused on investigation of influence of boundary conditions in FEM model developed in program Abaqus, included two ways of modeling so-called fork support using displacement constraints or non-deformable shell elements of the R3D4 type. The beams were modeled by means S4R shell or C3D8R solid finite element with linear or square shape function, and composite tape by S8R shell finite element. In the paper special attention was paid to the evaluation of the possibility to increase the load capacity with simultaneous limitation of displacements of the beams by appropriate localization of CFRP wrap or tape.

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Numerical analysis of cold-formed sigma-type steel beams reinforced with CFRP wraps and tapes

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