Isogeometric Design Optimization of Nonlinear 3D Beam Structures for Multi-material 3D Printing

Prof. Dr. Oliver Weeger, TU Darmstadt

18 Jun 2019, 17:00–18:30; Location: S4|10-1

With the capability to locally control the material composition of a structure, multi-material and multi-method 3D printing technologies provide a new level of design freedom beyond the sole realization of complex topologies. However, the precise design and optimization of spatially varying material compositions within a structure is beyond the capabilities of traditional computer-aided 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.

To efficiently model and simulate 3D beam structures, we introduce an isogeometric collocation method for the geometrically exact 3D beam model. In addition to discretizing the kinematic variables using NURBS curves, we also parameterize geometric and material design parameters, which enables design optimization of the shape, cross-section geometry and material composition.

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. We demonstrate the applicability of the approach for design optimization of multi-material 3D printed, active rod structures with axially varying material distributions, direct 4D printing of self-assembling, multi-material laminate structures, and soft, nonlinear lattice structures.

Category: CE Seminar


Technische Universität Darmstadt

Graduate School CE
Dolivostraße 15
D-64293 Darmstadt

Phone+49 6151/16-24401
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