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Design for Additive Manufacturing

by Botao Zhang last modified 2017-05-31 12:52

  • Design Rules for Additive Manufacturing

  • As additive manufacturing takes a completely new approach to create parts, the conventional design for manufacturing rules are not applicable to AM. To develop and explore the new design paradigm for AM, a novel Design for AM (DFAM) approach has been developed to integrate manufacturability constraints of Additive manufacturing processes with design techniques. 
    The design rules are formulated by studying the relationship between input part geometry and AM process parameters. Also, a proprietary Producibility Index (PI) is proposed in order to compare different designs for manufacturability.

    Figure: Design for additive Manufacturing

    Figure: Design progression using DFAM and Producibility Index

  • Topology Optimization in Additive Manufacturing

  • Tools such as topology optimization (TopOpt) are gaining wide recognition in the design process. Topology optimization is the computational method for finding minimum material distribution scheme for a defined loading condition within a design space without any preconceived notion for part geometry.
    Although, AM is capable of manufacturing non-conventional and organic geometric designs, it is important to consider the inherent manufacturing constraints associated with the additive processes. Novel algorithms have been developed at CGDM to incorporate the DFAM constraints within TopOpt.

    Figure: Topology Optimization

    Figure: Topology Optimization with DFAM

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