Experimental and Theoretical analysis of Concrete beams behavior under Dynamic loading by introducing Finite Similitude approach

Document Type : Research Paper

Authors

1 Department of Mechanical Engineering, Bandar Anzali Branch, Islamic Azad University, Bandar Anzali, Iran.

2 Department of Mechanical Engineering, Bandar Anzali Branch, Islamic Azad University, Bandar Anzali, 43131-11111, Iran

3 Department of Mechanical Engineering, Rasht Branch, Islamic Azad University, Rasht, Iran.

10.22124/jcr.2024.27666.1661

Abstract

Dimensional analysis methods have shortcomings in predicting the behavior of full-scale samples using small-scale results due to non-linearity of behavior, loading, or changes in material type, the inability to simultaneously predict two parameters with the same unit, and a limited number of independent degrees of freedom are independent. Recently, a new theory called Finite Similitude has been proposed to solve these problems, and in this article, using this theory to analyze the prediction of the dynamic behavior of concrete beams using the results of concrete beams on a smaller scale and beams with similar behavior to concrete (plaster-stone) under dynamic impact loading has been discussed. The predicted results such as force, displacement, energy, and time show that the dimensional analysis of the results with different materials is not accurate enough and in some cases, the difference in the results is more than 50%. However, with the finite similitude method, the behavior of full-scale concrete beams can be predicted by using small-scale plaster-stone samples with less cost, reduced construction time, and high accuracy, so that the error percentage in dynamic analysis in all samples is almost less than 10% was achieved.

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References

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