Transcript gtstrudl

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Buckling and Nonlinear Analysis Examples
Dr. Kenneth M.(Mac) Will
GTSUG 2011
June 2011
Delray Beach, Florida
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Examples
• Linear Buckling Analysis of Girder
• Pushover Analysis of Girder with Nonlinear
Geometry Effects
• Flat Plate with Nonlinear Geometry Effects
• Vibration of Flat Plate with Initial Stress
Loading
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Linear Buckling Analysis of
Girder
Concentrated Loads at
1/3 points
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Linear Buckling Analysis
Command after Static Analysis
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Results of Linear Buckling
Analysis
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Buckled Mode Shape – Mode 1
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Buckled Mode Shape – Mode 2
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Pushover Analysis with
Geometric Nonlinear Effects
Perturbation Loading
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Pushover Analysis Nonlinear Effects and
Active Solver Commands
• Nonlinear Effects
Geometry Members Existing
Active Solver GTSES
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Pushover Analysis Dialog
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Pushover Analysis Output
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Plot Pushover Analysis Results
Dialog
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Pushover Results Plot
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Deformed Shape After Pushover
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Simply Supported Plate with
Nonlinear Geometry
SS Concrete Slab
6 inches thick
100 psf load
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Pushover Analysis Commands
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Pushover Results – Contour of
Displacements
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Pushover Analysis Results – Middle Surface
Principal Stress
Note that stress is non-zero on middle surface
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Pushover Analysis Plot
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Dynamic Analysis of Plate
Frequencies with
Plate Unstressed
Frequencies with Initial
Stress Loading
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Dynamic Analysis Commands
with Initial Stress Loading