About this Abstract |
Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
Symposium
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2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
Presentation Title |
Designing for Cleanability: A Topology Optimization Approach for Electron Beam Melted Parts |
Author(s) |
Alptug Öztaskin, Evren Yasa |
On-Site Speaker (Planned) |
Alptug Öztaskin |
Abstract Scope |
Residual sintered powder is a fundamental problem in Electron Beam Melting (EBM). Although this problem is widely recognized by those who perform Design for Additive Manufacturing (DfAM), a commonly used AM design methodology, topology optimization processes often lack this constraint as either a penalty or criterion of acceptance. To address this issue, we model cleaning tools and/or media (e.g., sandblasting guns) as simple shapes formed of line segments. We measure the accessibility of the mesh surface using simple models based on a series of simplifying assumptions. We perform sampling on the mesh to reduce the number of operations, and we perform ray tracing with different elevation and azimuth angles with respect to the sample point normal. The accessibility of the points is normalized based on the intersections, and the normalized values are used in topology optimization as penalties as well as for validating final designs. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |