advanced nonlinear - postbuckling behavior
TRANSCRIPT
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Advanced Non-Linear AnalysisPost Buckling Behavior
May 19, 20162:00 PM EST
Alex [email protected]
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Agenda
• Introduction
• About Us
• What is Advanced Nonlinear?
• Advanced Non-Linear Capabilities
• Demonstrations
– Thin Column
– Box Beam
• Conclusions / Questions
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What is Advanced Nonlinear?
• Advanced Nonlinear is an add-on solver to the basic FEMAP Suite of Tools
– ADINA Solver run through NASTRAN
• Found in FEMAP Analysis Manager
• Gives access to additional capabilities outside of basic nonlinear
– Includes the following solution types
• Implicit Static and Transient, 601,106/129
• Explicit Transient Solution, 701
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Advanced Non-Linear Capabilities
• Non-Linearities
– Geometric
– Material
– Contact Conditions
• Pre / Post Buckling Behavior
– Capture deformations occurring before buckles
– Capture and explore post buckling behavior
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Demonstrations
• Thin-Walled Cylinder
– 40’ long
– 1900 lb load applied 2’ below tip
– Fixed @ base (6’)
– Advanced Non-Linear captures deformation that leads to buckle (Not captured by linear buckling solution)
• Linear Buckling predicts buckling @ 7400 lb
• Adv. NL shows instability @4800 lb
6ft
2ft
32ft
View the Webinar
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Demonstrations
• Box Beam
– Wing-Like structure
– Thin upper / lower skin
– Ribs, Spars, Stringers
– Constrained @ 1 end, vertical tip force on the other
• Post skin buckling behavior
View the Webinar
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Demonstration
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About SDA (aka “Structures.Aero”)
• SDA was founded in 1997 and provides expert aerospace structural analysis
• We serve a variety of industries
• We specialize in composites, and developing strong, lightweight structures that are readily manufacturable
• Low level support up through developing test plans and advanced stress analysis
• Typical support programs include small to large UAVs, manned and unmanned spacecraft, naval structures
• Our team consists of over a dozen B.S., M.S., and PhD level engineers
• SDA is located in Sterling, VA, just north of Dulles Airport near Washington DC
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Typical Projects we support
• Some of our previous projects include:– Aircraft
• Aurora Excalibur
• MHADD ARES
• Vanilla VA1
• Lockheed Constellation restoration for Lufthansa
– Spacecraft
• NASA NESC Composite Crew Module (CCM)
• NASA NESC Max Launch Abort System (MLAS)
• NASA James Webb Space Telescope/IEC
• NASA Orion Heatshield mass reduction for NESC
• NASA Orion Crew Module (with Lockheed)
• NASA WFIRST Telescope for Goddard
Aerosonde
Heatshield
Shadow M2
CCM
Orion Crew Module
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Partnerships
Siemens Value Added Reseller Collier Research Corporation Reseller
FEMAP NX Nastran
Fibersim Solid Edge
HyperSizer Pro
HyperSizerExpress
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Additional Resource
What New book published Fall 2014
Why Learning with the help documentation can be like drinking from a fire hose. Learning Femap succinctly covers the bases on using Femap without being a “bible”.
Covers Introduction Femap Application Interface Modeling/ Pre-Processing Analysis Post-Processing Programming Femap
How Explanation of features Numerous illustrations Annotated examples Guided tutorials
Learning FemapISBN 978-1-4951-2963-6By Eric Gustafson ([email protected]), Senior Aerospace Stress Analyst, SDAAvailable online at www.learningfea.com
$49.99
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Contact Us:
Contact:
Marty Sivic
Email:[email protected]
Website:http://structures.aero/
Phone: (724) 382-5290
Try FEMAP For Free!
Download a free 45-day trial of FEMAP with NX Nastran
• Full FEMAP capabilities• All Nastran solution sequences included• (http://structures.aero/femap-trial/)
Questions?
Contact:
Alex Skavdahl
Email:
Phone: (703) 935-2824