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Filtering by: Subject Nails and spikes -- Testing -- Mathematical models Remove constraint Subject: Nails and spikes -- Testing -- Mathematical models Non-Academic Affiliation Oregon State University. Graduate School Remove constraint Non-Academic Affiliation: Oregon State University. Graduate School

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  • Model for the prediction of nail withdrawal stiffness

    Creator:
    Atherton, Jon C.
    Abstract:
    An important factor affecting the strength and ultimate load of wood structures is the strength, stiffness and durability of its joints. Therefore, the behavior of nailed joints must be given proper consideration when designing and analyzing wood structures. Presently,formulas for determining the strength of nailed joints under withdrawal loads, as...
    Resource Type:
    Masters Thesis
    Full Text:
    Testing Procedure 4.3.1 Nail-push and nail withdrawal test 4.3.2 Friction tests 4.3.3 Foundation

  • On the design, modeling, and testing of ocean wave energy converters

    Creator:
    Bosma, Bret
    Abstract:
    Ocean wave energy converter technology continues to advance and new developers continue to emerge, leading to the need for a general design, modeling, and testing methodology. This work presents a development of the process of taking a wave energy converter from a concept to the prototype stage. A two body...
    Resource Type:
    Dissertation
    Full Text:
    ....................................................................................................43 4 Wave Tank Testing and Model Validation

  • High cycle fatigue modeling and analysis for deck floor truss connection details

    Creator:
    DePiero, Anthony H.
    Abstract:
    The Oregon Department of Transportation is responsible for many steel deck truss bridges containing connection details that are fatigue prone. A typical bridge, the Winchester Bridge in Roseburg, Oregon, was analyzed to assess the loading conditions, stress levels, and fatigue life of the connection details. The analysis included linear-elastic beam...
    Resource Type:
    Masters Thesis
    Full Text:
    FEA MODEL 24 4.3 RESULTS 29 5.0 DEFLECTION AND STRESS ANALYSIS 33 5.1 CLIP ANGLE DEFLECTION

  • Nonlinear finite-element modeling of intercomponent connections in light-frame wood structures

    Creator:
    Groom, Kevin
    Abstract:
    Nailed connections have nonlinear load-displacement relations. Modeling these connections in an assembled structure would require a great amount of computational time because of the large number of degrees of freedom. Replacing these connections with energetically-equivalent nonlinear springs reduces the number of degrees of freedom, and leads to computational efficiency in...
    Resource Type:
    Masters Thesis

  • Design, analysis and evaluation of bridge superstructures for live loads

    Creator:
    Turan, O. Tugrul
    Abstract:
    Due to age, original design that is deficient by modern standards, inadequate maintenance, environmental conditions, and increasing loads, large numbers of bridges in United States and elsewhere are classified as deficient and in need of rehabilitation or replacement. According to a national bridge inventory established by the Federal Highway Administration,...
    Resource Type:
    Dissertation
    Full Text:
    model resistance uncertainty. The model produced bias factor and coefficient of variation for

  • Optimal soaring by a small autonomous glider

    Creator:
    Kyle, Jason A.
    Abstract:
    Extending the flight time of an autonomous unmanned air vehicle by soaring is considered. A suboptimal controller is developed and successful static soaring is demonstrated with a 6 degree of freedom glider model. Altitude gain rates of between ¼ and ½ m/s are achieved with this simple implementation. A hybrid...
    Resource Type:
    Dissertation
    Full Text:
    micro air glider. 8 GLIDER MATHEMATICAL MODEL The glider is modeled as a rigid body, and