Boussinesq-Papkovich potentials are used in conjunction with the bispherical co-ordinate system to analyze three problems in the classical theory of linear elasticity: (a) The extension of the Boussinesq point-load problem to that in which the half-space contains a spherical cavity; (b) the determination of the stress distribution in an eccentric spherical shell under uniform internal pressure; (c) the determination of the stress distribution in a half-space containing a uniformly pressurized spherical cavity. Numerical results are presented for representative configurations and load distributions in each case.
This paper traces the development of engineering technology from bifurcation to the present time. They assert that ET desires to be distinguished more than it seeks to be distinct. This analysis of the successes and failures of bifurcation lead to a differentiation between engineering technology's being distinct as a discipline and becoming distinguished in its own right. They offer some conjecture about the bright future of ET as a partner with science and engineering in an atmosphere of increased technological development but intense international competition.
Three-dimensional effects of symmetrically compressing an O-ring with rigid plates are investigated. The O-ring is assumed to be an incompressible elastic material and the mixed boundary value problem is formulated within the framework of classical the linear elasticity theory. Transversely compressing the O-ring between flat rigid plates increases the toroidal radius and induces a reduction in the O-ring cross-sectional radius. This reduction depends strongly on the conditions of contact between plate and O-ring, and the reduced contact pressure may threaten the integrity of the seal. For O-rings compressed radially inward compressed radially inward or outward, most of the radial displacement is accommodated by a change in the toroidal radius with very little actual compression of the ring material. If this effect is not accounted for in the design of the seal, the contact pressure may not be sufficient to secure the seal.
Institutions are assessing graduate programs as a means of strengthening graduate education. A facet of continual assessment programs, it is brought about, in part, by regional accreditation associations. Texas A&M University has had a process for the review of doctoral programs in place for several years. The University will have completed the review of the Mechanical Engineering doctoral program by the summer of 2003. This is the fourth doctoral program to have been reviewed in Texas A&M University's College of Engineering in as many years. The others are Chemical, Civil and Electrical Engineering. Civil and Electrical Engineering each have sizeable engineering doctoral programs of appro ximately 100 Ph.D. candidates. The review process involves external reviewers and the preparation of extensive documentation. This paper discusses the major features of the Mechanical Engineering doctoral program review. It outlines the review process and describes the required documentation. The procedures for identifying and choosing external reviewers are explained. The conduct of the on-site review is discussed and the procedures for documenting the review are described, as are the types of possible actions from the review. The similarities and differences between the doctoral review and an ABET review of an undergraduate engineering program are described. The review of the Mechanical Engineering doctoral program occurred in February 2003. Since this paper was completed before the visit, the presentation at the ASEE Annual Conference & Exposition will discuss the final phase of the review process. It will include the nature of the outcome and describe the feedback obtained by the Mechanical Engineering faculty as a result of the review.
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