Faculty Sponsor Name

Dr. M. Jonaidi

Abstract (300 words maximum)

Finite element analysis (FEA) uses differential equations to determine a computer-based solution that explains interactive behaviors within models of complex structural and mechanical systems, subjected to various loading and environmental conditions. Those systems are partitioned into finite elements consisting of a linear mesh with nodes at each end point, and FEA determines relationships, such as force-displacement, between each of the finite elements. This apportioned model allows systems to be evaluated under multiple loading scenarios. Computer-based FEA offers significant benefits that reduce cost and the time required to perform alternative analysis for complex structural systems. In this research project, a comprehensive FEA program called ABAQUS/CAE is utilized to model non-linear time dependent loading, and to validate strength and deformation of small-scale structural prototypes created in the laboratory. Understanding the FEA process from this research will allow larger-scale structural systems to be iteratively modeled and analyzed with ABAQUS, rather than building costly prototypes in a laboratory. This will reduce time and costs required to conduct additional research. A specific goal of this research is to use FEA to model the interaction of a permanent release connection between concrete walls and post-tensioned concrete slabs under various loading conditions. Modeling this interface of vertical dowels wrapped with compressible material is expected to show temporary or permanent release of the slab from the restraint of the walls, thereby mitigating cracking. This behavior is of particular interest to contractors involved with construction of large structures, such as bridges and high-rise buildings in metro Atlanta.

Project Type

Poster

Share

COinS
 

Using Comprehensive Finite Element Analysis to Simulate A Special Connection in Post-Tensioned Concrete

Finite element analysis (FEA) uses differential equations to determine a computer-based solution that explains interactive behaviors within models of complex structural and mechanical systems, subjected to various loading and environmental conditions. Those systems are partitioned into finite elements consisting of a linear mesh with nodes at each end point, and FEA determines relationships, such as force-displacement, between each of the finite elements. This apportioned model allows systems to be evaluated under multiple loading scenarios. Computer-based FEA offers significant benefits that reduce cost and the time required to perform alternative analysis for complex structural systems. In this research project, a comprehensive FEA program called ABAQUS/CAE is utilized to model non-linear time dependent loading, and to validate strength and deformation of small-scale structural prototypes created in the laboratory. Understanding the FEA process from this research will allow larger-scale structural systems to be iteratively modeled and analyzed with ABAQUS, rather than building costly prototypes in a laboratory. This will reduce time and costs required to conduct additional research. A specific goal of this research is to use FEA to model the interaction of a permanent release connection between concrete walls and post-tensioned concrete slabs under various loading conditions. Modeling this interface of vertical dowels wrapped with compressible material is expected to show temporary or permanent release of the slab from the restraint of the walls, thereby mitigating cracking. This behavior is of particular interest to contractors involved with construction of large structures, such as bridges and high-rise buildings in metro Atlanta.