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An analysis of a containment building dome under various loading conditions, including gravity load, emergency pressure, and cracking. Detailed plots of deflections, stresses, and contour plots. The dome's behavior is studied with and without deterioration, and the effects of deterioration on von mises stress at different angles are examined.
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Introduction
Objectives achieved
Concrete element introduction
Analysis of dome at gravity load
Analysis of dome at emergency pressure
Analysis of dome at 10x emergency pressure
Analysis of dome at -10x emergency pressure
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Mesh independency
Analysis of dome at operating pressure
Crack analysis of dome by concrete damage Crack analysis of dome by concrete and reinforcement damage
Future recommendations
Summary
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Analysis of dome without cracking and crushing
Analysis of dome with cracking and crushing
Analysis of dome with reinforcement damage
Crack analysis of dome by concrete damage
Crack analysis of dome by concrete and reinforcement damage
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In ANSYS the concrete is modeled by SOLID SOLID65 is a 3D reinforced concrete solid SOLID65 is used for the 3-D modeling of solids with or without reinforcing bars also called the rebar In concrete applications the solid capability of the element may be used to model the concrete The rebar capability is available for modeling reinforcement behavior.
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A rebar material number of zero removes that rebar capability
A rebar material equal to the element material number also removes that rebar capability
Four real constants are required
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SOLID65 has 8 nodes
Six faces (1,2,3,4,5,6) SOLID65 is Hexahedral element Up to three types of reinforcements can be defined
10 Zero volume elements are not allowed. All elements must have eight nodes. A prism-shaped element may be formed by defining duplicate K and L and duplicate O and P node numbers. A tetrahedron shape is also available. Whenever the rebar capability of the element is used, the rebar are assumed to be “smeared” throughout the element. The sum of the volume ratios for all rebar must not be greater than 1.0.
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The element is nonlinear and requires an iterative solution.
The following options are not recommended if cracking or crushing nonlinearities are present: Large strain and large deflection. Large rotations.
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Deteriorated Dome Undeteriorated Dome
