NDLI: Design for Manufacturing of 3D Heterogeneous Objects With Processing Time Consideration

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Hu, Yuna Vincent, Y. Blouin Georges, M. Fadel
Copyright Year	2005
Abstract	Rapid prototyping (RP) technology, such as Laser Engineering Net Shaping (LENS®), can be used to fabricate heterogeneous objects with various levels of gradient variations in material composition. These objects are engineered to achieve a potentially enhanced functional performance. Past research on the design of such objects has focused on representation, modeling, and desired functional performance. However, the inherent constraints in RP processes, such as system capability and processing time, lead to heterogeneous objects that may not meet the designer’s original intent. To overcome this situation, the research presented in this paper focuses on the identification and implementation of manufacturing constraints into the design process. Previous work on a 2D disk brake rotor design has shown that processing time is one of the critical factors that affect manufacturability. This paper focuses on incorporating the processing time into the optimization design for manufacturing of 3D heterogeneous objects. A node-based finite element modeling technique is used for the representation and analysis. The multi-criteria design problem corresponds to finding the nodal material compositions with minimized structural weight, maximized structural stiffness, and minimized extra processing time used to deposit the multi-material subjected to stress constraints. The optimizer used in this research is a self-adaptive, real-valued Evolutionary Strategy (ES), which is well suited for this type of multi-modal problem. A 3D I-beam made of two materials, aluminum for lightweight and steel for better strength characteristics, is used to illustrate the tradeoff between manufacturability and functionality.
Sponsorship	Design Engineering Division and Computers and Information in Engineering Division
Starting Page	523
Ending Page	532
Page Count	10
File Format	PDF
ISBN	0791847411
DOI	10.1115/DETC2005-85474
e-ISBN	0791837661
Volume Number	Volume 4b: Design for Manufacturing and the Life Cycle Conference
Conference Proceedings	ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Language	English
Publisher Date	2005-09-24
Publisher Place	Long Beach, California, USA
Access Restriction	Subscribed
Subject Keyword	Rapid prototyping Functionally gradient materials Heterogeneous Manufacturing Aluminum Rotors Steel Modeling Optimization Stress Design Lasers Lenses (optics) Tradeoffs Weight (mass) Design for manufacturing Disks Stiffness Finite element analysis Brakes
Content Type	Text
Resource Type	Article

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