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TITLE AND SUBTITLE:
Application of Composite Mechanics to Composites Enhanced Concrete Structures
AUTHOR(S):
Chamis, Christos, C.; Gotsis, Pascal, K.
REPORT DATE:
2006-01-XX
FUNDING NUMBERS:
WBS 561581.02.08.03
PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES):
National Aeronautics and Space Administration John H. Glenn Research Center at Lewis Field Cleveland, Ohio 44135-3191
PERFORMING ORGANIZATION REPORT NUMBER:
E-15395
SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES):
National Aeronautics and Space Administration Washington, DC 20546-0001
REPORT TYPE AND DATES COVERED:
Technical Memorandum
SPONSORING/MONITORING AGENCY REPORT NUMBER:
NASA/TM-2006-214038
SUPPLEMENTARY NOTES:
Prepared for the 16th European Conference of Fracture cosponsored by ESIS, ASTM, SMS, AIAS, JSEM, BSSM, SEM, and EURASEM, Alexandroupolis, Greece, July 3-7, 2006. Christos C. Chamis, e-mail: Christos.C.Chamis@nasa.gov, NASA Glenn Research Center; and Pascal K. Gotsis, e-mail: pkgotsis@email.teiser.gr, Technical Education Institute, Terma Magnisias Str, TK62124, Serres, Greece. Responsible person, Christos C. Chamis, organization code R, 216-433-3252.
ABSTRACT:
A new and effective method is described to design composites to repair damage or enhance the overload strength of concrete infrastructures. The method is based on composite mechanics which is available in computer codes. It is used to simulate structural sections made from reinforced concrete which are typical in infrastructure as well as select reinforced concrete structures. The structural sections are represented by a number of layers through the thickness where different layers are used in concrete, and for the composite. The reinforced concrete structures are represented with finite elements where the element stiffness parameters are from the structural sections which are represented by composite mechanics. The load carrying capability of the structure is determined by progressive structural fractural. Results show up to 40 percent improvements for damage and for overload enhancement with relatively small laminate thickness for the structural sections and up to three times for the composite enhanced select structures (arches and domes).
SUBJECT TERMS:
Displacement; Energy; Finite elements; Stresses
NUMBER OF PAGES:
20
PDF AVAILABLE FROM URL:
2006/TM-2006-214038.pdf ( 2455 KB )
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