Browse Technical Reports - Theoretical and Applied Mechanics (TAM) by Issue Date

  • Phillips, W.R.C. (Department of Theoretical and Applied Mechanics (UIUC), 2001-11)
    Langmuir circulations in the open ocean typically form in an environment of surface waves and a shear current, and a mechanism which exploits these features and leads to shear-aligned longitudinal vortices much like Langmuir ...

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  • Brown, Eric N.; Sottos, Nancy R.; White, Scott R. (Department of Theoretical and Applied Mechanics (UIUC), 2001-11)
    Inspired by biological systems in which damage triggers an autonomic healing response, we have developed a polymer composite materials that can heal itself when cracked. This paper summarizes the self-healing concept for ...

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  • Liu, Ming; Hsia, K. Jimmy (Department of Theoretical and Applied Mechanics (UIUC), 2001-12)
    Evaluation of crack tip driving force for interfacial cracks between piezoelectric actuators and elastic substrates is crucial to successful applications of smart materials and smart structures. Here the behavior of an ...

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  • Christensen, Kenneth T.; Adrian, Ronald J. (Department of Theoretical and Applied Mechanics (UIUC), 2001-12)
    Acceleration is a fundamental quantity in fluid mechanics because it reflects the sum of all forces (pressure and viscous) present within the flow. However, measurements of acceleration have been difficult to achieve ...

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  • Dolbow, John E.; Fried, Eliot; Shen, Amy Q. (Department of Theoretical and Applied Mechanics (UIUC), 2002-02)
    We consider the question of whether compressible nematic gels are capable of sustaining hedgehogs (radially symmetric point defects). As a basis for this work, we rely on a free-energy density that extends the conventional ...

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  • Kessler, Michael R.; White, Scott R. (Department of Theoretical and Applied Mechanics (UIUC), 2002-02)
    The cure kinetics of polydicyclopentadiene (pDCPD) prepared by ring-opening metathesis polymerization with three different concentrations of Grubbs' catalyst was examined using differential scanning calirimetry (DSC). The ...

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  • Carlson, Donald E.; Fried, Eliot; Sellers, Shaun (Department of Theoretical and Applied Mechanics (UIUC)Springer, 2002-03)
    The remarkable ability of nematic elastomers to exist in multiple stable equilibrium configurations in the absence of force and energy cost is known as soft elasticity. Here, we determine all of the soft states that are ...

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  • Fried, Eliot; Todres, Russell E. (Department of Theoretical and Applied Mechanics (UIUC), 2002-06)
    We use a continuum model to investigate the isochoric radial expansion of a right circular cylindrical specimen composed of a nematic elastomer that is cross-linked in a uniaxial state and then annealed. Numerical solutions ...

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  • Fried, Eliot; Roy, Bidhan C. (Department of Theoretical and Applied Mechanics (UIUC), 2002-07)
    Working with the context of a theory proposed recently by Fried et al. (2001), we consider a one-dimensional problem involving granular mixture of K > 2 discrete sizes bounded below by an impermeable base, above by an ...

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  • Tomkins, Christopher D.; Adrian, Ronald J. (Department of Theoretical and Applied Mechanics (UIUC), 2002-08)
    Spanwise structure and growth mechanisms in a turbulent boundary layer are investigated experimentally. PIV measurements are obtained in the streamwise–spanwise (x–z) plane from the buffer layer to the top of the logarithmic ...

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  • Riahi, Daniel N. (Department of Theoretical and Applied Mechanics (UIUC), 2002-09)
    This paper presents part 2 of the problem of nonlinear convection in horizontal mushy layers during the solidification of binary alloys. Part 1 of the problem dealt with only the oscillatory modes of convection, which were ...

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  • Boyland, Philip L.; Stremler, Mark A.; Aref, Hassan (Department of Theoretical and Applied Mechanics (UIUC), 2002-10)
    Topological techniques are used to study the motions of systems of point vortices in the infinite plane, in singly-periodic arrays, and in doubly-periodic lattices. Restricting to three vortices with zero net circulation, ...

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  • Zhang, Sulin; Panat, Rahul Padmakar; Hsia, K. Jimmy (Department of Theoretical and Applied Mechanics (UIUC), 2002-10)
    Adhesively bonded aluminum joints have been increasingly used in automotive industry because of their structural and functional advantages. Interfacial debonding in these joints has become a major concern limiting their ...

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  • Aref, Hassan; Newton, Paul K.; Stremler, Mark A.; Tokieda, Tadashi; Vainchtein, Dmitri L. (Department of Theoretical and Applied Mechanics (UIUC), 2002-10)
    Vortex crystals is one name in use for the subject of vortex patterns that move without change of shape or size. Most of what is known pertains to the case of arrays of parallel line vortices moving so as to produce an ...

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  • Bagchi, Prosenjit; Balachandar, S. (Department of Theoretical and Applied Mechanics (UIUC), 2002-10)
    A direct numerical simulation (DNS) is used to study the effect of a freestream isotropic turbulent flow on the drag and lift forces on a spherical particle. The particle diameter is about 1.5 to 10 times the Kolmogorov ...

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  • Carlson, Donald E.; Fried, Eliot; Tortorelli, Daniel A. (Department of Theoretical and Applied Mechanics (UIUC), 2002-10)
    When a body is subject to simple internal constraints, the deformation gradient must belong to a certain manifold. This is in contrast to the situation in the unconstrained case, where the deformation gradient is in an ...

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  • Bhattacharjee, Pratik; Riahi, Daniel N. (Department of Theoretical and Applied Mechanics (UIUC), 2003-02)
    Effect of rotation on nonlinear solutal convection during protein cystallization is modelled and studied computationally under both normal and microgravity conditions. The axis of the externally imposed rotation, which is ...

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  • Brown, Eric N.; Kessler, Michael R.; Sottos, Nancy R.; White, Scott R. (Department of Theoretical and Applied Mechanics (UIUC), 2003-02)
    Microencapsulated healing agents that possess adequate strength, long shelf-life, and excellent bonding to the host material are required for self-healing materials. Ureaformaldehyde microcapsules containing dicyclopentadiene ...

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  • Brown, Eric N.; White, Scott R.; Sottos, Nancy R. (Department of Theoretical and Applied Mechanics (UIUC), 2003-02)
    Microencapsulated dicyclopentadiene (DCPD) healing agent and Grubbs' Ru catalyst are incorporated into an epoxy matrix to produce a polymer composite capable of selfhealing. The fracture toughness and healing efficiency ...

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  • Costello, George A. (Department of Theoretical and Applied Mechanics (UIUC), 2003-03)
    This presentation on the mechanics of wire rope will be divided into two parts: a theory for the static and dynamic response of wire rope, and practical examples in the form of consulting problems with which I have been ...

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