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Title: Isogeometric design and optimization of spatially varying, multi-material 3D printed rod structures
Authors: Weeger, Oliver
Yeung, Sai-Kit
Dunn, Martin L.
Keywords: Isogeometric Analysis
Multi-material 3D Printing
DRNTU::Engineering::Mechanical engineering::Prototyping
Issue Date: 2018
Source: Weeger, O., Yeung, S.-K., & Dunn, M. L. (2018). Isogeometric design and optimization of spatially varying, multi-material 3D printed rod structures. Proceedings of the 3rd International Conference on Progress in Additive Manufacturing (Pro-AM 2018), 280-285. doi:10.25341/D4JG6V
Abstract: With the capability to locally control the material composition of a structure, multimaterial and multi-method 3D printing technologies provide a new level of design freedom beyond the realization of complex topologies. However, the precise design and optimization of spatially varying material compositions within a structure is beyond the capabilities of traditional computeraided design approaches and tools. In this work, we apply the concept of isogeometric design and analysis to efficiently model, simulate and optimize spatially varying material compositions in the context of multi-material additive manufacturing. In particular, we apply this concept to nonlinear 3D beam structures with axially and transversally varying geometric and material parameters, including non-homogeneous, functionally graded and laminate cross-sections. In addition to discretizing the kinematic variables using an isogeometric collocation method, we also parameterize the geometric and material properties of the cross-sections as spline curves, which enables efficient modelling and optimization of axially varying material compositions and cross-section geometries. We demonstrate the applicability of the approach for design optimization of multi-material 3D printed, active rod structures with axially varying material distributions and direct 4D printing of self-assembling, multi-material laminate structures.
DOI: 10.25341/D4JG6V
Rights: © 2018 Nanyang Technological University. Published by Nanyang Technological University, Singapore.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:Pro-AM Conference Papers

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