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Design for Manufacturing and Topology Optimization in Additive Manufacturing

Ranjan, Rajit
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1439307951

Abstract Details

2015, MS, University of Cincinnati, Engineering and Applied Science: Mechanical Engineering.
Additive Manufacturing (AM) processes are used to fabricate complex geometries using a layer by layer material deposition technique. These processes are recognized for creating complex shapes which are difficult to manufacture otherwise and for enabling designers to be more creative with their designs. However, as AM is still in its developing stages, relevant literature with respect to design guidelines for AM is not readily available. This research proposes a novel design methodology which can assist designers in creating parts with high manufacturability. The research includes formulation of design guidelines by studying the relationship between input part geometry and AM process parameters. Two approaches are considered for application of the developed design guidelines. The first approach presents a feature graph based design improvement method in which the concept of Producibility Index (PI) is used to compare the designs. This method is useful for performing manufacturing validation of pre-existing designs and modifying it for better manufacturability. The second approach presents a DFAM constrained topology optimization based design advisory which can help designers in creating entirely new lightweight designs that are additive friendly. In this approach, the developed AM design guidelines are mathematically integrated with existing structural optimization techniques. Application of both the methods is presented in the form of case studies where design improvement and evolution is observed.
Sundararaman Anand, Ph.D. (Committee Chair)
Sundaram Murali Meenakshi, Ph.D. (Committee Member)
David Thompson, Ph.D. (Committee Member)
Kumar Vemaganti, Ph.D. (Committee Member)
64 p.
Engineering
Design for Additive Manufacturing; Additive Manufacturing; Direct Metal Laser Sintering; Feature Graph; Topology Optimization; Producibility Index

Recommended Citations

Citations

  • Ranjan, R. (2015). Design for Manufacturing and Topology Optimization in Additive Manufacturing [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1439307951

    APA Style (7th edition)

  • Ranjan, Rajit. Design for Manufacturing and Topology Optimization in Additive Manufacturing. 2015. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1439307951.

    MLA Style (8th edition)

  • Ranjan, Rajit. "Design for Manufacturing and Topology Optimization in Additive Manufacturing." Master's thesis, University of Cincinnati, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1439307951

    Chicago Manual of Style (17th edition)

ucin1439307951
1,103
© 2015, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.