Free flexural vibrations of standard wide-flange H-beams with consideration of the shear effect
			
	
 
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				Łukasiewicz Research Network - Poznan Institute of Technology, 6 Ewarysta Estkowskiego St., 61-755 Poznań, Poland
				 
			 
										
				
				
		
		 
			
			
			
			 
			Data nadesłania: 18-03-2024
			 
		 		
		
			
			 
			Data ostatniej rewizji: 20-05-2024
			 
		 		
		
		
			
			 
			Data akceptacji: 24-05-2024
			 
		 		
		
			
			 
			Data publikacji online: 25-05-2024
			 
		 		
		
			
			 
			Data publikacji: 16-11-2024
			 
		 			
		 
	
							
					    		
    			 
    			
    				    					Autor do korespondencji
    					    				    				
    					Krzysztof  Magnucki   
    					Łukasiewicz Research Network – Poznan Institute of Technology, Łukasiewicz Research Network – Poznan Institute of Technology, Polska
    				
 
    			
				 
    			 
    		 		
			
							 
		
	 
		
 
 
Rail Vehicles/Pojazdy Szynowe 2024,1-2,46-50
		
 
The subject of the paper is a simply supported standard wide-flange H-beam. Cross sections of this beam is analytically described as a three-layer structure. The shear effect in its succesive layers is taking into account with consideration of the classical shear stress formula called Zhuravsky shear stress. Based on Hamilton’s principle, two differential equations of motion are obtained. These equations are analytically solved and the fundamental natural frequency of flexural vibration for this beam is derived. Examplary calculations are carried out for selected five I-beams.