Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Institution
Articles 1 - 2 of 2
Full-Text Articles in Mechanical Engineering
Mechanical Instability Of Thin Solid Film Structures, Masoud Noroozi
Mechanical Instability Of Thin Solid Film Structures, Masoud Noroozi
Electronic Thesis and Dissertation Repository
Instability of thin film structures as buckling and wrinkling are important issues in various fields such as skin aging, mechanics of scars, metrology of the material properties of thin layers, coating of the surfaces and etc. Similar to the buckling, highly ordered patterns of wrinkles may be developed on the film‒substrate due to compressive stresses. They may cause a failure of the system as structural damage or inappropriate operation, however once they are well understood, it is possible to control and even use them properly in various systems such as the gossamer structures in the space, stretchable electronics, eyelike digital …
Buckling Failure Boundary For Cylindrical Tubes In Pure Bending, Daniel Peter Miller
Buckling Failure Boundary For Cylindrical Tubes In Pure Bending, Daniel Peter Miller
Theses and Dissertations
Bending of thin-walled tubing to a prescribed bend radius is typically performed by bending it around a mandrel of the desired bend radius, corrected for spring back. By eliminating the mandrel, costly setup time would be reduced, permitting multiple change of radius during a production run, and even intermixing different products on the same line. The principal challenge is to avoid buckling, as the mandrel and shoe are generally shaped to enclose the tube while bending. Without the shaped mandrel, buckling will likely occur sooner, that is, at larger bend radii. A test apparatus has been built for arborless bending. …