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

  • Bhattacharjee, Pratik; Riahi, Daniel N. (Department of Theoretical and Applied Mechanics (UIUC), 2005-12)
    Microgravity conditions pose unique challenges for fluid handling and heat transfer applications. By controlling (curtailing or augmenting) the buoyant and thermocapillary convection, the latter being the dominant convective ...

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  • Yoo, Sunhee; Stewart, D. Scott (Department of Theoretical and Applied Mechanics (UIUC), 2004-02)
    We present an accurate and fast wave tracking method that uses parametric representations of tracked fronts, combined with modifications of level-set methods that use narrow bands. Our strategy generages accurate computation ...

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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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  • Liu, Ming; Hsia, K. Jimmy; Sardela, Mauro, Jr. (Department of Theoretical and Applied Mechanics (UIUC), 2003-05)
    In-situ x-ray experiments were conducted to examine the electric-field-induced phase changes in PZT-5H materials. The x-ray diffraction profiles at different electric field levels were analyzed by peak fitting and used to ...

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  • Fried, Eliot; Sellers, Shaun (Department of Theoretical and Applied Mechanics (UIUC), 2005-08)
    In a nematic elastomer the deformation of the polymer network chains is coupled to the orientational order of the mesogenic groups. Here we use the neo-classical model for this coupling supplemented by the usual Frank ...

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  • Riahi, Daniel N. (2006-01)
    Flow instability due to oscillatory modes of disturbances in a horizontal dendrite layer during alloy solidification is investigated under an external constraint of rotation. The flow in the dendrite layer, which is ...

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  • Riahi, Daniel N. (Department of Theoretical and Applied Mechanics (UIUC), 2006-02)
    Inertial effects on flow instabilities in a horizontal reactive porous layer with deformed upper boundary are studied using a linear stability analysis and under the condition that the porous layer, which is also referred ...

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  • Zhang, Sulin; Panat, Rahul P.; 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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  • 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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  • Ji, Huidi; Mourad, Hashem; Fried, Eliot; Dolbow, John E. (Department of Theoretical and Applied Mechanics (UIUC), 2004-12)
    We present a continuum model for thermally-induced volume transitions in stimulus-responsive hydrogels (SRHs). The framework considers the transition as driven through the motion of a sharp interface separating swollen and ...

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  • 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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  • Gioia, Gustavo; Bombardelli, Fabian A. (Department of Theoretical and Applied Mechanics (UIUC), 2005-05)
    In many applications a sustained, localized turbulent flow scours a cohesionless granular bed to form a pothole. Here we use similarity methods to derive a theoretical formula for the equilibrium depth of the pothole. ...

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  • Liu, Ming; Hsia, K. Jimmy (Department of Theoretical and Applied Mechanics (UIUC), 2003-05)
    In-situ x-ray diffraction measurements are conducted on a polycrystalline ferroelectric material PZT-5H at different levels of static electric field. The locking of the electric field induced non-180° domain switching and ...

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  • Bhattacharjee, Pratik; Riahi, Daniel N. (Department of Theoretical and Applied Mechanics (UIUC), 2005-12)
    In this paper some previous studies related to those for the flow control aspects of the hydrodynamics of magnetic fluid and field are reviewed first and recent mathematical approaches for the corresponding systems of the ...

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  • Riahi, Daniel N. (Department of Theoretical and Applied Mechanics (UIUC), 2005-10)
    This paper is divided into two parts. In the first part physical meanings and some other aspects of wind and the driving forces are reviewed. These includes types of driving forces, sources for wind production, boundary ...

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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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  • Keller, Michael W.; Sottos, Nancy R. (Department of Theoretical and Applied Mechanics (UIUC), 2005-09)
    The elastic modulus and failure behavior of poly(urea-formaldehyde) shelled microcapsules were determined through single-capsule compression tests. Capsules were tested both dry and immersed in a fluid isotonic with the ...

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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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  • 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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  • Fried, Eliot; Todres, Russell E. (Department of Theoretical and Applied Mechanics (UIUC), 2005-10)
    Extending Andreussi and Gurtin’s (1977) pioneering work on the wrinkling of a free surface, we investigate the wrinkling stability of an incompressible elastic-like half-space whose surface is proximate to a contactor. ...

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