PROGRESS REPORT FOR EXTRUDED PRODUCTS DIVISION May 17, 2001 Yongwook Kim, PhD Student Teoman Peköz,...
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PROGRESS REPORT FOR EXTRUDED PRODUCTS DIVISION May 17, 2001 Yongwook Kim, PhD Student Teoman Peköz, Professor SCHOOL OF CIVIL AND ENVIRONMENTAL ENGINEERING Cornell University
PROGRESS REPORT FOR EXTRUDED PRODUCTS DIVISION May 17, 2001 Yongwook Kim, PhD Student Teoman Peköz, Professor
PROGRESS REPORT FOR EXTRUDED PRODUCTS DIVISION May 17, 2001
Yongwook Kim, PhD Student Teoman Pekz, Professor
Slide 2
Objective Develop reliable methods and Specifications for
efficient and optimum design of extruded and rolled aluminum
members Scope Extruded and rolled aluminum sections that are either
not covered or covered inadequately in the AA Specifications. Types
of Members Columns, beams and beam columns
Slide 3
Slide 4
AA Specification Actual Shape INACCURATE MODELING OF EXTRUSIONS
BY THE AA SPECIFICATION
Slide 5
hinge
Slide 6
SOME EXTRUSIONS CANNOT BE DESIGNED ACCORDING TO THE AA
SPECIFICATION
Slide 7
INTEGRATED NUMERICAL METHODS AND DESIGN PROVISIONS FOR ALUMINUM
STRUCTURES thin beams columns thick beams simplecomplicatedthick
& thinthin Year 1Year 2Year 3 Year 1 Year 2Year 3 additional 6
month lateral buckling modified plan original plan Spec
recommendations
Slide 8
DOE AA FUNDING: DOE $399,225 AA $120,000 (The AA contribution
enabled us to get the DOE funding) INTEGRATED NUMERICAL METHODS AND
DESIGN PROVISIONS FOR ALUMINUM STRUCTURES
Slide 9
What Have We Found So Far ? AA Specification Does Not Consider
Load Carrying Capacity Accurately Possible Design Approaches
Developed by FEM Simulations for Sections of Fig. 1 FEM Simulations
Are Proved by Physical Tests Fig. 1
Slide 10
What Have We Found So Far ? Current AA Specification Does Not
Provisions Sections with Tapered Flanges (Fig. 2) Actual Behavior
of Tapered Sections Are Simulated by FEM (Fig. 2) Fig. 2
Slide 11
Beam Capacity Comparison [ Fig.1 Section ] AA Standard
I-Beam:I-3x1.64 (6063-T6) EC9 : Eurocode 9 TESTS : 3 Bending Tests
FEM : Simulations Using Finite Element Method
Slide 12
Beam Capacity Comparison [ Fig.1 Section ] AA Standard
I-Beam:I-3x1.64 (6061-T6) EC9 : Eurocode 9 APP1 ~4 : Possible
Design Approaches 1~4 FEM : Simulations Using Finite Element
Method
Slide 13
Tests vs. Simulation [Fig.1 Section] Tests Simulation
Slide 14
FEM Simulation [Fig.2 Section]
Slide 15
Aluminum Design Workshops Objective Informal exchange of ideas
between the US and foreign researchers Held in 1998, 2000 and to be
held in 2001
Slide 16
WORKSHOP 2 PARTICIPANTS
Slide 17
Slide 18
Slide 19
CORNELL RESEARCHERS WHO HELPED WITH WORKSHOP 2
Slide 20
A graduate student has completed a Master of Science thesis on
the subject. He is now working on his PhD Thesis on the subject.
Several papers have been prepared. Eight progress reports have been
prepared and these reports are being reviewed by the AA Engineering
Task Group. OTHER ACTIVITIES
Slide 21
ACKNOWLEDGEMENT The sponsorship of the Extruded Products
Division, the Aluminum Association and the DOE is gratefully
acknowledged.