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

  • Langhaar, Henry Louis; Boresi, Arthur Peter (Dept. of Theoretical and Applied Mechanics (UIUC), 1956-04)
    In an earlier report (TAM Report No. 80), the authors considered the buckling and post-buckling behavior of an ideal elastic cylindrical shell loaded by uniform external pressure on its lateral surface, and by an axial ...

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  • Landgraf, R.W. (Department of Theoretical and Applied Mechanics (UIUC), 1968-11)
    Changes in deformation resistance are studied during completely reversed strain cycling of steels hardened to yield strengths in excess of 200 ksi by quenching and tempering, quenching and deforming at elevated temperature, ...

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  • Brown, Eric N. (Dept. of Theoretical and Applied Mechanics (UIUC), 1998)
    The thermoelastic properties of several common woven glass/epoxy substrate materials were characterized in both the warp and fill directions. Five common commercially pressed cores (1080, 2116, 2313, 3313, 7628) were ...

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  • Thoroddsen, Sigurdur T.; Shen, Amy Q. (Department of Theoretical and Applied Mechanics (UIUC), 2000-05)
    Worthington jets are a familiar sight in light rain upon puddles and ponds. These narrow vertical jets are formed by the radial collapse of the liquid "craters" produced by the impacting rain drops. Such jets can also be ...

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  • Chaïeb, Sahraoui; Sato-Matsuo, Eriko; Tanaka, Toyoichi (Department of Theoretical and Applied Mechanics (UIUC), 2000-07)
    Polymer gels can undergo a volume phase transition (either continuous or discontinuous) when an external condition such as temperature or solvent composition is altered. This phase transition is either a shrinking or a ...

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  • Kuznetsov, Igor R.; Stewart, D. Scott (Department of Theoretical and Applied Mechanics (UIUC), 2000-10)
    An approach is presented for modeling the thermal expansion boundary layer in energetic materials such as solid propellants and explosives during their combustion. A thermodynamically consistent system of conservation laws ...

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  • Dong, Fei; Hsui, Albert T.; Riahi, Daniel N. (Department of Theoretical and Applied Mechanics (UIUC), 2001-01)
    Linear and nonlinear analyses of thermal convection with a variable "buoyancy factor", which is defined as the product of thermal expansion coefficient and gravitational acceleration, are investigated for a fluid layer ...

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  • Stewart, D. Scott; Jackson, Thomas L. (Department of Theoretical and Applied Mechanics (UIUC), 2001-01)
    In the design of explosive systems the generic problem that one must consider is the propagation of a well-developed detonation wave sweeping through an explosive charge with a complex shape. At a given instant of time the ...

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  • Gioia, Gustavo; Cuitiño, Alberto M. (Department of Theoretical and Applied Mechanics (UIUC), 2001-05)
    When poured into a container, cohesive granular materials form low-density, open granular aggregates. If pressed upon with a ram, these aggregates densify by particle rearrangement. In this paper we introduce experimental ...

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  • Damljanovic, Vesna; Weaver, Richard L. (Department of Theoretical and Applied Mechanics (UIUC), 2001-05)
    We consider wave propagation in slender elastic waveguides. With aim at finding all vibration modes of such bodies, we develop a theoretical framework for application of energy principles and subsequent discretization of ...

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  • Sofronis, Petros; Robertson, Ian M. (Department of Theoretical and Applied Mechanics (UIUC), 2001-06)
    In-situ deformation studies in a transmission electron microscope equipped with an environmental cell have shown that solute hydrogen increases the velocity of dislocations, decreases the stacking-fault energy, and increases ...

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  • Pushkin, Dmitri O.; Aref, Hassan (Department of Theoretical and Applied Mechanics (UIUC), 2001-07)
    A theory of stationary particle size distributions in coagulating systems with particle injection at small sizes is constructed. The size distributions have the form of power laws. Under rather general assumptions, the ...

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  • Fried, Eliot; Korchagin, Vladimir A. (Department of Theoretical and Applied Mechanics (UIUC), 2001-08)
    We consider a recent experiment of Kundler and Finkelmann (1995), who subjected an aligned specimen of nematic elastomer to uniaxial extension and observed the formation of striped domains. Working with an energy density ...

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  • Fried, Eliot; Todres, Russell E. (Department of Theoretical and Applied Mechanics (UIUC), 2001-08)
    The isochoric extension of a cylindrical, nematic-elastomeric specimen is studied. Numerical solutions of the resulting boundary-value problem predict that, for sufficiently large extensions, there exists a region surrounding ...

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  • Fried, Eliot; Gurtin, Morton E.; Hutter, Kolumban (Department of Theoretical and Applied Mechanics (UIUC), 2001-09)
    Guided by the kinematical treatment of vacancies in theories for solid-state diffusion, we develop a theory for compaction and segregation in flowing granular materials. This theory leads to a partial differential equation ...

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  • Sofronis, Petros; Robertson, Ian M.; Liang, Yueming; Teter, David F.; Aravas, Nikolaos (Department of Theoretical and Applied Mechanics (UIUC)Los Alamos National Laboratory (LANL), Los Alamos, NM, 2001-09)
    This paper summarizes recent work at the University of Illinois on the fundamental mechanisms of hydrogen embrittlement. Our approach combines experimental and theoretical methods. We describe the theoretical work on hydride ...

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  • Adrian, Ronald J.; Balachandar, S.; Liu, Zi-Chao (Department of Theoretical and Applied Mechanics (UIUC), 2001-09)
    Recent studies of the structure of wall turbulence have lead to the development of a conceptual model that validates and integrates many elements of previous models into a relatively simple picture based on self-assembling ...

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  • Kasimov, Aslan R.; Stewart, D. Scott (Department of Theoretical and Applied Mechanics (UIUC), 2001-10)
    We investigate hydrodynamic instability of a steady planar detonation wave propagating in a circular tube to three-dimensional linear perturbations, using the normal mode approach. Spinning instability is identified and ...

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  • Fried, Eliot; Todres, Russell E. (Department of Theoretical and Applied Mechanics (UIUC), 2001-10)
    We present a theory for uniaxial nematic elastomers with variable asphericity. As an application of the theory, we consider the time-independent, isochoric extension of a right circular cylinder. Numerical solutions to the ...

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  • Stewart, D. Scott (Department of Theoretical and Applied Mechanics (UIUC), 2001-10)
    Condensed phase explosives used in conventional explosive systems have a charge size on the order of a meter or a sizable fraction of a meter. This paper addresses a range of issues required to scale down the size of ...

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