Eksperyment fizyczny i numeryczny w analizie dynamicznej belek żelbetowych

This paper presents a physical and numerical experiment in the dynamic analysis of reinforced concrete beams. The objects of research are 12 reinforced concrete beams. The beams were excited by hitting it at three independent points and the response to this applied impulse enforcement was recorded by eight accelerometers. On the basis of changes in the frequencies and mode shapes of vibration, the secant modulus of elasticity of concrete was determined. The used method was verified by numerical simulations.