Finite Element Modeling of Reinforcement Concrete Cantilever Beam

Abstract

A cantilever beam is an important structural element that provide less support and efficient use of space in building design . the cantilever beam is rigidly fixed in one end and the other end is hanged in the air . It is essential design elements that provide functional and aesthetic architectural benefits , and require care and ingenuity in their design , erection , assessment , and rehabilitation by structural engineers . This research consists a finite element model to study structural analysis of a reinforced concrete cantilever (RCC) beam , and focuses on defining the special deflection properties , and using carbon fiber reinforced polymer (CFRP) as a strengthening technique for (RCC) beams and learn how to use ABAQUS program to modeling and analysis structural element. For this purpose, a cantilever beam with the only deflection in one direction and various length is used .To use Abaqus program , will compare experimental results which taken from previous study with the FE program (ABAQUS) results to sure the effectiveness and efficiency of the program (ABAQUS) in modeling , for this purpose B1and B2 , show modeling of (RCC) and (RC) beam respectively , the beams was used to sure the efficiency of the program (ABAQUS) in modeling , The comparison show that , Finite element program (ABAQUS) is in good agreement with experimental approach results (which taken from previous study) . After checked the performance of Abaqus program , cantilever beam (B4) at length 3.5m was model . (B4a) RCC beam without CFRP , while (B4b) RCC with externally bonded of CFRP. The beam was used to Comparison of behavior of RCC beam with and without using CFRP and try to reach to length 3.5m to cantilever beam without big deflection . The results of deflection to B4a was (2616mm) while to B4b is (0.05243mm) , and the stress value to B4a was (2.595e10N/mm2) , but B4b show )6.348e5 N/mm2( value of stress . The obtained results indicated that Strenegthing with externally bonded CFRP sheets increases the carrying load and decreases the deflection .