LOGIN TO VIZCORE

***ATTENTION***

JAVA PLATFORM 2 v5.0 DOES NOT RENDER 3-D IMAGES PROPERLY IN VIZCORE

If you are uncertain as to what version of Java Platform 2 you are running, you can start the Java console by selecting Tools > Java Console.  The version will be displayed in the first line of the console.  

If you are using v5.0 or v1.5.0, you will need to uninstall it so that VizCoRe may run properly.  You will then need to install Java Platform 2 v1.4.2, which you may download here, and you will need to re-install Java3D, which you may download here.

• VizCoRe 2.1 is now available!  Improvements include material stiffness visualization, save workspace function, automatic Java3D installation for Windows, and improved finite element data set visualization.

VizCoRe is a novel interactive visualization learning and development software tool for material constitutive relations used in a wide range of engineering applications. VizCoRe:

• contains 2-D and 3-D graphical renderings that define the constitutive relations geometric shapes superimposed on the computed or measured material (stress-strain) response.
• introduces the use of an advanced representation technique of complex 3-D states of stress and strain using glyphs and hyperstreamline techniques.
• is internet-based and computer platform-independent.

We welcome your feedback. If you are interested in contributing to VizCoRe development please contact Prof. Hashash at hashash@uiuc.edu.

Constitutive relations have been developed to mathematically describe the stress-strain-strength behavior of engineering materials such as metals, plastics, concrete, and soils. 

Finite element and finite difference methods in conjunction with constitutive relations are used in the simulation of problems such as metal forming, gear meshing, circuit board drop tests, and deep open cut excavations in a wide range of fields, from aerospace to civil and mechanical engineering. 

The availability of fast, inexpensive desktop computers has made it possible for engineers and researchers to use these techniques in their day-to-day work.  

The main challenge now faced by users of numerical methods and constitutive relations is the lack of a tool to quickly and systematically evaluate constitutive relations. 

The VizCoRe software is a tool introduced to address these difficulties.  It combines several capabilities that were up until recently disparate to develop new systematic ways to view, study, verify, and develop constitutive relations.

Wotring, D. VISUALIZATION IN GEOMECHANICS WITH AN APPLICATION TO DEEP EXCAVATIONS, Ph.D. Thesis, 2004, UIUC.

Hashash, Y.M., Q. Fu, and J. Butkovich, Generalized Strain Probing of Constitutive Models. International Journal of Numerical and Analytical Methods in Geomechanics, 2004. 28: p. 1503-1519.

Hashash, Y.M.A., J.I.-C. Yao, and D. Wotring, Glyph and hypersteamline representation of stress and strain tensors and material constitutive response. International Journal for Numerical and Analytical Methods in Geomechanics, 2003. 27: pp.603-626.

Hashash, Y.M.A., D. Wotring, J.I.-C. Yao, J.-S. Lee, and Q. Fu, Visual Framework for Development and use of Constitutive Models. International Journal for Numerical and Analytical Methods in Geomechanics, 2002. 26: 1493-1513.

VizCoRe is under development at the University of Illinois at Urbana-Champaign.

Dr. Youssef M. A. Hashash
Associate Professor of Civil and Environmental Engineering
hashash@uiuc.edu

David Groholski
Graduate Student in Civil and Environmental Engineering
groholsk@uiuc.edu

Qingwei Fu
Graduate Student in Civil and Environmental Engineering
qfu@uiuc.edu

This work is supported by the following grants

• 2000 Presidential Early Career Award for Scientists and Engineers, through U.S. National Science Foundation, Division of Civil and Mechanical Systems,Grant No: NSF CMS 99-84125

• 1999 National Center for Supercomputing Applications Faculty Fellow (NCSA) at the University of Illinois at Urbana-Champaign

The support is gratefully acknowledged