Thesis (Ph. D.)--University of Wisconsin--Madison, 1981. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 166-172).

Thesis (Ph. D.)--University of Wisconsin--Madison, 1983. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 153-160).

Thesis (M.S.)--University of Wisconsin--Madison, 1968. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Analysis and design of connections, such as beam-to-column connections, pose various complexities such as nonlinear behavior of material and geometric condition, irregularities in geometry and boundary condition. The main purpose of these types of connections is to provide adequate structural strength and a sufficiently stiff structure at working loads, and to possess sufficient ductility and strength at overloads such as may occur during a major earthquake. At present the design profession does not have established guidelines for estimating the ultimate moment and shear capacity of these connections. The assumption of linear elastic material behavior of the connections is no longer valid when the elements are stressed beyond the yield stress of the material. For such problems encountered in the design of typical structures, either the closed-form analytical solutions are extremely complex or cannot be obtained at all. Thus, numerical techniques such as finite difference, finite element and boundary integral methods are used. In this study, a finite element program is developed for plastic analysis of connections such as beam-to-column connection using a constitutive law of the material, a three parameter stress-strain relationship, which gives stress explicitly in terms of strain. One hundred and fifteen cases of beam-to-column connections subjected to moment are analysed with the finite element program developed in this study, and the results are compared with the existing approximate solution by yield line theory to propose a simple formula to correlate actual ultimate capacity to the approximate solution.

No description available.

Impact force and deformation behavior of adhesively bonded single lap composite joints for transverse impact are studied through a pilot project and validated using Finite Element Analysis (FEA). At present there is no standard which provides guidelines in testing adhesively bonded joints or structures at coupon level. An attempt is made here to formulate the testing procedure through an experiment. Adhesively bonded glass-epoxy lap joints are transversely impacted using three different hemispherical impactors at three different energy levels. The effect of impactor diameter on impact force, target deformation and energy absorption are of particular interest. An explicit non-linear contact analysis using LS-Dyna-3D is carried out. FEA results are observed to be in close agreement with the experimental results. The results show that for a same impact energy level larger impactor generates more force whereas smallest diameter produces highest deformation and most through thickness damage. The same finite element model is used to investigate the effect of lay-up schedules and number of plies on impact force and deformation in composite lap joint. The study of various lay-up schedules reveals that fibers in [0/90] direction have better control on target deformation than fibers in [45/-45] direction for the given boundary condition in transverse impact. Also as the numbers of plies are increased the system becomes stiffer resulting in high impact force. The target deformation is observed to become more localized with increase in laminate thickness. / Thesis (M.S.)--Wichita State University, College of Engineering, Dept. of Mechanical Engineering / "May 2006." / Includes bibliographic references (leaves 62-64).

Thesis (Ph. D.)--University of Washington, 2001. / Vita. Includes bibliographical references (leaves 162-169).

Thesis (M.S.)--West Virginia University, 2004. / Title from document title page. Document formatted into pages; contains x, 56 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 52-53).

published_or_final_version / Industrial and Manufacturing Systems Engineering / Master / Master of Philosophy

No description available.