SVIBOR - Project code: 2-11-077

MINISTRY OF SCIENCE AND TECHNOLOGY

Strossmayerov trg 4, HR - 10000 ZAGREB
tel.: +385 1 459 44 44, fax: +385 1 459 44 69
E-mail: ured@znanost.hr

SVIBOR

SVIBOR - Collecting Data on Projects in Croatia

Project code: 2-11-077


FUNDAMENTAL INVESTIGATIONS IN MECHANICS OF SOLIDS


Main researcher: ŠIMIĆ, VICKO (46795)


Assistants
Type of research: applied
Duration from: 01/01/91. to 12/31/95.
Papers on project (total): 34
Institution name: Građevinski fakultet, Zagreb (82)
Department/Institute: Department of Tehnical Mechanics
Address: Kačićeva br. 26
City: 10000 - Zagreb, Croatia
Communication
Phone: 385 (0)1 456-1222/247
Fax: 385 (0)1 442-025
Phone: 385 (0)1 442-025
Phone: 385 (0)1 456-1247
Summary: Analysis of the degree of safety of carachteristic parts of reinforced concrete structures such as joints, hinges, anchoring connections or glued connections will be performed by the methods and principles of fracture mechanics. In doing so fundamental parameters of fracture mechanics will be determined theoretically as well as experimentally. Influence of the concrete inhomogenity on the fundamental parameters of fracture mechanics will be investigated. Since the application of functions of complex variable in fracture mechanics is of the special importance, the possibilities of extension of application of the functions of complex variable to anisotorpic structures will be investigated. Mechanical properties of composite anisotorpic materials in dependence of enviroments conditions will be studied. Particularly, the influence of fiber orientation on the strength of specimen will be investigated both theoretically and experimentally with possible application of the results in predicting strength of reinforced concrete. By the principle of electroacoustics and energy of elastic stress waves, physical and mechanical properties of materials as well as imperfections and cracks in material, including their genesis and geometry, will be studied. Dependence of dynamic parameters of structures and parts od structures on defects in material will be investigated. The methods of determination of initial stresses in structures will be studied. This is particuraly important for determination of loading capacity of the structures. Nonlinear behaviour of concrete walls with holes under seizmic loading will be investigated theoretically as well as experimentaly.

Keywords: theory of elasticity, theory of plasticity, fracture mechanics, stress intensity factor, strength, crack, function of a complex variable, anisotropic materials, composite materials, non-linear strain, finite element, modeling, concrete, reinforced concrete, non-destructive testing methods, ultrasonic, dynamic parameter, collapse mechanism, shear walls

Research goals: The main goal of the research will be extension of application of fracture mechanics to reinforced concrete structures. Regarding it, the degree of safety in carachteristic details of reinforced concrete structures such as joints, anchoring and glued connections, as well as supports will be investigated. The types of fracture as well as influence of inhomogenity of concrete on fundamental parameters of fracture mechanics will be investigated. The goal is to investigate the methods for detections of defects that influence safety of structures. Determination of mechanical properties of materials by application of the theory of stress waves propogation in isotropic and anisotropic continuum. Developement of methods for determination of stresses and strains in structures under dead loading. The influence of fiber orientation in composite materials on their strength will be studied. Special attention will be paid to the application of the results to reinforced concrete. Especially, it will be taken in to account the influence of the shape and the size of specimen on the strength. Theoretical and experimental investigation of nonlinear behaviour of reinforced concrete walls with holes under seizmic loading. Investigations of defects in materials (cracks, plastic zones, etc.) that influence nonlinear behaviour of reinforced concrete. These investigations will contribute to application of fracture mechanics to calculations and design of engineering structures especially of reinforced concrete structures. In that way it will be contributed to better understanding of the degree of safety and long lasting of structures and their parts.

COOPERATION - PROJECTS


  1. Name of project: 2-11-097 PARAMETRI STANJA I REALNOG PONAŠANJA POSEBNIH OBJEKATA
    Name of institution: Građevinski fakultet Sveučilišta u Zagrebu, Kačićeva br. 26
    City: 10000 - Zagreb, Croatia
Other information about the project.
MZT Croatian language SVIBOR Alphabetic list Sorted on project code Sorted on institutions Search help
Ministry of
Science and
Technology		 Croatian
language		 Svibor
homepage		 Alphabetic
list		 Sorted on
project code		 Sorted on
institutions		 Search Help
Last update: 09/29/95
Information: svibor@znanost.hr