Structures, Mechanics & Materials Curriculum at ASEN / … · Structures, Mechanics & Materials...
Transcript of Structures, Mechanics & Materials Curriculum at ASEN / … · Structures, Mechanics & Materials...
Structures, Mechanics & Materials Curriculum at ASEN / CU Boulder
Carlos Felippa & Kurt MauteCenter for Aerospace StructuresDept of Aerospace Engineering [email protected]@colorado.edu
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ASEN Faculty and Students
• Tenured Track Faculty (30)• Instructors (5)• Professional Research Staff (10)• Undergraduates (~400)
Bachelor of Science (4 years)
• Graduate Students (~200)
Master of Science (2 yrs)Doctor of Philosophy (4-6 yrs)
6 faculty in Structures & Materials →
3 Full, 1 Associated, & 2 Assistant Professors
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AES Curriculum 2000
• Designed 1994-1996 by faculty, with significant industry input• Development supported by CCHE grant and Lockheed-Martin
endowments• Implemented: Sophomore 1997-98, Junior 1998-99, Senior 1999-00• First graduates: May 2000• Incorporated innovative elements
Broad exposure to Aerospace at Sophomore levelMore theoretical fundamentals at Junior levelWide spectrum of capstone Senior ProjectsStrong hands-on content Sophomore through Senior
• Guiding Principles on next slide
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AES Curriculum 2000: Guiding Principles
• Hands-on laboratories and design exercises combined with fundamentals
• Adoption of Active Learning Method
• Knowledge integrative Senior Projects
• AES 2000 Chart on next slide
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AES Curriculum 2000 Chart
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Structures, Mechanics & Materials Curriculum
• Freshmen• Physics, Calculus, Programming (common year)
• Sophomore• ASEN 2001* Statics, Structures & Materials• ASEN 2003* Dynamics and Systems• ASEN 2004* Aerospace Vehicle Design and Performance
• Junior• ASEN 3112* Aerospace Structures
• Senior• ASEN 4012* Aerospace Materials• ASEN 4018/28 Senior Design
• Electives• Vibrations, Composites, FEM, Comp. Methods, Design Optimization
* Courses in red are taught yearly by AES-SMM Faculty
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ASEN 2001: Statics, Structures & Materials
• Format• 5 credit hours, 2 instructors• 2 x 75’ lectures /week - 13 weeks• 2 x 120’ labs/week - 12 weeks
• Content• Statics• Stress – Strains, Failure• Trusses, Beams (statically determinate)
• Assessment• 4 Midterms, 1 Final, Homework, • Lab reports, presentations, peer evaluation
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Statics, Structures & Materials (cont’d)
• Truss Lab
• Design 3-D Truss Structure for given Performance Metricsand Failure Criterion (joint strength)
• Develop MATLAB code for 3-D Truss
• Design and Analyze Truss Structure
• Analyze Sensitivity to Uncertainty (geometry, joint strength, …)
• Build and Test Truss Structure
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Statics, Structures & Materials
• Stress Lab
• Observe and model the failure of samples accounting for material
properties (ductile/brittle) and geometry (dog-bone, punched plate)
• Perform tensile test for different specimen
• Analyze statistics of test results
• Use FEM toolbox to compute and visualize stress in samples
• Develop MATLAB routine to compute failure criteria
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Statics, Structures & Materials (Cont’d)
• Composite Wing Lab
• Design and Test Composite Wing under simplified Aerodynamic Loading
• Evaluate Strength of Balsa-Foam-Core Beam via 4-point Bending Test
• Find Optimum Plan-form of Wing for given Pressure Distribution
• Design and Perform Wiffle Tree Test to Failure
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ASEN 3112: Structures• Format
• 4 credit hours, 1 or 2 instructors• 2 x 75’ lectures /week - 13 weeks• 1 x 120’ labs/week - 12 weeks
• Content• Stresses, strains, material properties • Torsion, beams (statically indeterminate)• Intro to FEM• Column buckling• Intro to dynamics and vibrations
• Assessment• 4 Midterms, 1 Final, Homework, Lab reports
• No textbooks, all course material now online ->
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Structures (cont’d)
• 16-Bay Truss Lab (2 weeks)• Combined experimental & computer simulation• Measure deflections, internal forces & reactions• Compare against results from ANSYS finite element code• Students learn ANSYS hands-on in ~1 hour with tutorial
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Senior Projects
• Two semester Senior Projects course concludes the BS program
• Synthesis and application of the basic science, mathematics, engineering theory, and design taught in the sophomore, junior, and senior years.
• Design, fabrication & testing of a complex component or system
• Introduction to project management.
• Example: MACH-SR1
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Ten Years After ...
• Highly positive feedback from students & employers• Rated #1 UG program on the Boulder campus in 2008 by administration• Very demanding for instructors (especially contact time) and students,
as well as of departmental resources
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Where Do They Go?
• 5-year retention: 60 to 65%• Paths taken by our AES-BS graduates
about 20% continue for BS/MS (1 extra year)about 10% go to graduate school (at CU or elsewhere)about 70% go to industry
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AES Graduate Program Snapshot
• Recently rated #4 nationwide by NRC in 2010; was #13 in 1995• 180 enrolled students (AY 10-11)• Four Focus Areas (current->projected student population % in red)
Aerospace Systems (Structures, Fluids, Control) 40->44%Astrodynamics & Satellite Navigation 30->32%Bioastronautics 10->12%Remote Sensing (includes GPS) 20->12 %