Mechanical & Materials Engineering, Department of


Date of this Version

Fall 11-29-2010


A THESIS Presented to the Faculty of The Graduate College at the University of Nebraska In Partial Fulfillment of Requirements For the Degree of Master of Science, Major: Mechanical Engineering, Under the Supervision of Professor C. W. Solomon To. Lincoln, Nebraska: December, 2010
Copyright 2010 Nitin B. Ingale


This thesis is about the investigation of the geometrically nonlinear responses and bulging factors of cracked laminated composite cylindrical shell structures subjected to internal pressure. Hybrid strain based three-node flat triangular shell elements, developed by To and Wang were used.

Effects of dynamic responses of various numbers of layers and their angle arrangements of cracked cylindrical shell structures clamped at both ends are analyzed and studied. Bulging factors based on the concept of equivalent Young’s modulus of elasticity are found and compared with single and multiple layer composite cylindrical shell structures.

Finally, bulging factors for similar laminated composite cylindrical shells with free-free boundary conditions are also presented in this thesis.

Advisor: C. W. Solomon To