Date of Award
Summer 8-2019
Degree Type
Thesis-Restricted
Degree Name
M.S.
Degree Program
Mechanical Engineering
Department
Mechanical Engineering
Major Professor
Paul Schilling
Second Advisor
Paul Herrington
Third Advisor
Uttam Chakravarty
Abstract
Abstract
An experimental method was developed that demonstrated the size effects in forming thin sheet metals, and a finite element model was developed to predict the effects demonstrated by the experiment. A universal testing machine (UTM) was used to form aluminum and copper of varying thicknesses (less than 1mm) into a hemispherical dome. A stereolithography additive manufacturing technology was used to fabricate the punch and die from a UV curing resin. There was agreement between the experimental and numerical models. The results showed that geometric size effects were significant for both materials, and these effects increased as the thickness of the sheets decreased. The demonstration presents an inexpensive method of testing small-scale size effects in forming processes, which can be altered easily to produce different shapes and clearances.
Creative Commons License
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Recommended Citation
Morris, Jeffrey D., "Development of Experimental and Finite Element Models to Show Size Effects in the Forming of Thin Sheet Metals" (2019). University of New Orleans Theses and Dissertations. 2676.
https://scholarworks.uno.edu/td/2676
Included in
Computer-Aided Engineering and Design Commons, Manufacturing Commons, Mechanics of Materials Commons, Other Materials Science and Engineering Commons, Polymer and Organic Materials Commons
Rights
The University of New Orleans and its agents retain the non-exclusive license to archive and make accessible this dissertation or thesis in whole or in part in all forms of media, now or hereafter known. The author retains all other ownership rights to the copyright of the thesis or dissertation.