Title:
Analysis of Concrete Slabs Using Shell Element with Assumed Strain
Author(s):
Susanto Teng, Yu Liu, and Chee-Kiong Soh
Publication:
Structural Journal
Volume:
102
Issue:
4
Appears on pages(s):
515-524
Keywords:
flexure; slab; strain
DOI:
10.14359/14555
Date:
7/1/2005
Abstract:
In this paper, a layered degenerated shell element was adopted for finite element analysis of reinforced concrete slabs in combination with a three-dimensional continuum model based on a space truss concept for concrete. The space truss based model combined the uniaxial stress-strain relationships of concrete to model concrete triaxial behavior. The layered degenerated shell element with assumed shear strain and membrane strain fields is capable of removing locking mechanism and presenting no spurious zero energy mode. Hence, it is suitable for both thin and thick slabs. The reinforcements are built into the concrete layers and perfect bond is assumed. The numerical examples illustrated that the combination of the three-dimensional continuum model and the degenerated shell elements with assumed strain is able to perform the flexure analysis of reinforced concrete slabs with good accuracy.