Graduation Semester and Year
2019
Language
English
Document Type
Thesis
Degree Name
Master of Science in Mechanical Engineering
Department
Mechanical and Aerospace Engineering
First Advisor
Robert M Taylor
Abstract
3-D printing has enabled flexible, tool-less fabrication that yields numerous benefits. One benefit is unique and complex structural arrangements that increase design freedom to minimize weight. Such arrangements can be guided by advanced topology, shape, and sizing optimization tools using appropriate process constraints to ensure a printable design and can include highly integrated structural details such as stiffeners, flanges, frames, and other connections. 3D printing thin wall aircraft structures presents challenges for material and structural characterization. 3D printing enables integrated structural details, each detail is affected by the print process capability to fabricate the local geometry and deviations from designed geometry and structural connectivity can result in quite different structural capability from the design intent. The present work seeks to characterize the effect of print orientation on static response of thin wall structures using calibration factors on local geometric details. The approach is implemented using a wide stiffened beam printed using Fused Deposition Modeling (FDM). This work adds an equivalent stiffness analytical model to predict beam performance. An analytical model has been developed for a stiffened beam representation that has been calibrated with coupon test data that incorporates print orientation effects. The calibrated analytical model results are compared with the actual experimental test results, FE results. In addition, the calibrated analytical model is compared with the results obtained using published mechanical properties from the Stratasys for ABS M30. The calibrated analytical model shows better results than the published values in comparison to experimental and FE results.
Keywords
3D printing, Thin-walled structures, Fused deposition modeling
Disciplines
Aerospace Engineering | Engineering | Mechanical Engineering
License
This work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 4.0 International License.
Recommended Citation
Kulkarni, Akhilesh Ravindra, "Static Response Calibration of 3D Printed Thin Walled Structures Using Fused Deposition Modelling" (2019). Mechanical and Aerospace Engineering Theses. 804.
https://mavmatrix.uta.edu/mechaerospace_theses/804
Comments
Degree granted by The University of Texas at Arlington