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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 491 to 500 of 9685 (0.062 seconds)| 491 |
A Finite Element Model for Ejection of Green Parts After PM CompactionHabib, FOUAD 02 October 2008 (has links)
The present study describes the development of an FE model of tooling during production of a transmission gear. Results of the simulation at the puck/die interface during ejection examine the behavior of friction. Machine component deflections under pressure and areas of wear/binding are also predicted. The tooling was developed and modeled in Abaqus, an FE pre- and post-processor. A metal PM (Powder Metallurgy) puck is simulated from the point at the end of compaction, and then at several positions during ejection. A test setup was designed and built. The apparatus will be used to create iron powder compacts, and experimental results will be used to evaluate future models. Experiments with the new design will enable future studies of friction at the puck/die interface. The current design is for a simple puck and an increase in part geometry complexity is proposed with preliminary design requirements. / Thesis (Master, Mechanical and Materials Engineering) -- Queen's University, 2008-10-02 13:53:50.789
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| 492 |
The jaw adductor muscles of Champsosaurus and their implications for feeding mechanicsJames, Michael Unknown Date
No description available.
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| 493 |
Application of a biomechanical finite element spine model to the vicious cycle scoliosis growth theory: evaluation of improved FEA geometry and material assignmentFok, Jonathan Unknown Date
No description available.
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| 494 |
Triangular finite elements for vector fields in electromagneticsKonrad, Adalbert. January 1974 (has links)
No description available.
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| 495 |
Study of force-displacement relationships for the finite-element analysis of reinforced concreteHoude, Jules January 1974 (has links)
No description available.
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| 496 |
Finite element analysis of reinforced concrete members.Spokowski, Robert William. January 1972 (has links)
No description available.
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| 497 |
A second order isoparametric finite element analysis of dielectric waveguides with curved boundaries /Welt, Daniel. January 1984 (has links)
No description available.
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| 498 |
Finite element analysis of telluric and magnetetelluric response over resitivity anomlies and topographic effectsKisak, Eugene. January 1976 (has links)
No description available.
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| 499 |
The effect of anticlastic curvature on stresses and deformations in a shell of revolution.Schütz, Reinhard. January 1972 (has links)
No description available.
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| 500 |
An investigation of the rheology and indentation response of vegetable shortening using finite element analysisGonzalez-Gutierrez, Joamin 21 January 2009 (has links)
Many soft food materials, including vegetable shortening, exhibit complex rheological behaviour with properties that resemble those of a solid and a liquid simultaneously. The fundamental parameters used to describe the rheological response of vegetable shortening were obtained from uniaxial compression tests, including monotonic and cyclic compression, as well as creep and stress relaxation tests. The fundamental parameters obtained from the various compression tests were then used in two mechanical models (viscoelastic and elasto-visco-plastic) to predict the compression and conical indentation response of vegetable shortening. The accuracy of the two models was studied with the help of the commercially available finite element analysis software package Abaqus. It was determined that the viscoelastic model was not suitable for the prediction of the rheological response of shortening. On the other hand, the proposed elasto-visco-plastic model predicted with reasonable accuracy the uniaxial compression and indentation experimental response of vegetable shortening.
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