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Filtering by: Creator Dale, A. C. Remove constraint Creator: Dale, A. C. Degree Field Mechanical Engineering Remove constraint Degree Field: Mechanical Engineering Resource Type Dissertation Remove constraint Resource Type: Dissertation

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  • Further Development of MPM and its Applications in Modeling Wood-Adhesive Bonds

    Creator:
    Hammerquist, Chad C.
    Abstract:
    This work is a culmination of a series of published works related to the use of the Material Point Method (MPM) in modeling wood adhesive bonds. The use of wood as construction material has the potential to play a small role in the solution to the current CO2 and climate...
    Resource Type:
    Dissertation
    Full Text:
    stacks, b) a slice showing the wood structure and experimental results for adhesive penetration, c

  • Vertical Axis Pendulum Wave Energy Converters : Investigating Control Strategies and the Deployment of a Scaled Generic Prototype

    Creator:
    Boren, Blake C.
    Abstract:
    Vertical Axis Pendulum Wave Energy Converters (VAPWECs) are thought to be both effective and robust at converting ocean wave energy into usable electricity. Seeking to build upon and investigate such potential, this work examines the merits of actively controlling a generic VAPWEC's pendulum for the purpose of increasing the converter's...
    Resource Type:
    Dissertation
    Full Text:
    Control Strategies and The Deployment of a Scaled Generic Prototype by Blake C. Boren A DISSERTATION

  • A model for the mechanical behavior of irradiated mixed carbide sphere pac fuel pins

    Creator:
    George, Thomas L.
    Abstract:
    A model is developed that allows the prediction of the stress-strain distribution in a mixed carbide sphere pac fuel pin during irradiation. The model is coupled with a previously developed model for the thermal behavior of the pin. The one-dimensional (radial at various axial locations) solution is for quasi-steady pin...
    Resource Type:
    Dissertation
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    .3 FIGURE A.4 Fracture and Flow Stress for (U,Pu)C 117 Swelling of (U,Pu)C at Constant Temperature

  • Dynamic finite element analysis of micropolar elastic materials

    Creator:
    Kim, Jong-bum, 1960-
    Abstract:
    In granular or fibrous materials, in which the dimensions of the internal structure can be of the same order of magnitude as major flaws or holes, classical elasticity theory does not consistently provide accurate models of the large stress gradients that may develop. With the incorporation of additional rotational degrees...
    Resource Type:
    Dissertation

  • A study of cavitation instabilities in solids

    Creator:
    Puttapitukporn, Tumrong
    Abstract:
    Cavitation instabilities in elastic-plastic solids under spherically-symmetric and axisymmetric loadings were investigated using the finite element method. Both quasi-static and dynamic analyses were used to solve these problems. In the quasi-static analyses, we investigated a cavitation instability in elastic/perfectly-plastic, linear hardening elastic-plastic, power hardening elasticplastic, and constrained silver materials. Here,...
    Resource Type:
    Dissertation
    Full Text:
    C EFFECTS OF MODEL SIZES ON A QUASI-STATIC ANALYSIS UNDER AXISYMMTRIC LOADING .............. 155

  • Numerical study of droplet formation with nozzle dynamics and multiple droplet impingement

    Creator:
    Sangplung, Saangrut
    Abstract:
    Droplet formation from a flexible nozzle plate driven by a prescribed-waveform excitation of a piezoelectric is numerically investigated using a computational fluid dynamics (CFD) model with the VOF method. The droplet generator with a flexible nozzle plate, which is free to vibrate due to the pressure acting on the plate,...
    Resource Type:
    Dissertation
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    ................................................................................43 5.12 Flow characteristics: (a) droplet volume, (b) velocity, and (c) break-off time versus σ

  • Three-dimensional, nonlinear viscoelastic analysis of laminated composites : a finite element approach

    Creator:
    Wang, Min
    Abstract:
    Polymeric composites exhibit time-dependent behavior, which raises a concern about their long term durability and leads to a viscoelastic study of these materials. Linear viscoelastic analysis has been found to be inadequate because many polymers exhibit nonlinear viscoelastic behavior. Classical laminate theory is commonly used in the study of laminated...
    Resource Type:
    Dissertation
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    : Timothy C. Kennedy Polymeric composites exhibit time-dependent behavior, which raises a concern about

  • A study of a diffusionally controlled reactive synthesis process using a multi-tube diffusion flame burner

    Creator:
    Snell, Douglas C.
    Abstract:
    A continuous process for the production of ceramic materials has been studied. This method reacted metal and oxidizer in a diffusionally controlled process, demonstrated by reacting a magnesium particle stream and hot water vapor. Many small rich hydrogen/air diffusion flames provide an atmosphere of hot water vapor, hydrogen, and nitrogen...
    Resource Type:
    Dissertation
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    a Multi-tube Diffusion Flame Burner by Douglas C. Snell A THESIS Submitted to Oregon State

  • A numerical study of solid fuel combustion in a moving bed

    Creator:
    Ko, Daekwun
    Abstract:
    Coal continues to be burned by direct combustion in packed or moving bed in small size domestic furnaces, medium size industrial furnaces, as well as small power stations. Recent stringent restrictions on exhaust emissions call for a better understanding of the process of combustion of coal in beds. The present...
    Resource Type:
    Dissertation
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    fraction of solid species j in solid, [kg of solid species j/kg of solid] Subscripts A Ash C Carbon

  • A study of laser generated Rayleigh and Lamb waves in graphite/epoxy composites

    Creator:
    Park, Heeyong
    Abstract:
    The application of laser generated ultrasonics was first demonstrated in the mid-seventies and has shown good potential when applied to isotropic materials. However, its use with composite materials is still in the early stages of development. This study explores the potential for application of laser generated Rayleigh and Lamb waves...
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    Dissertation
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    like to express my deepest gratitude to Professor C. A. Calder, for his academic guidance and