Predictive Simulation of Process Windows for Powder Bed Fusion Additive Manufacturing: Influence of the Powder Bulk Density

Rausch A, Küng V, Pobel C, Markl M, Körner C (2017)


Publication Language: English

Publication Type: Journal article

Publication year: 2017

Journal

Book Volume: 10

Journal Issue: 10

DOI: 10.3390/ma10101117

Abstract

We present a novel approach for gradient based maximization of phononic band gaps. The approach is a geometry projection method combining parametric shape optimization with density based topology optimization. By this approach, we obtain, in a two dimension setting, cellular structures exhibiting relative and normalized band gaps of more than 8 and 1.6, respectively. The controlling parameter is the minimal strut size, which also corresponds with the obtained stiffness of the structure. The resulting design principle is manually interpreted into a three dimensional structure from which cellular metal samples are fabricated by selective electron beam melting. Frequency response diagrams experimentally verify the numerically determined phononic band gaps of the structures. The resulting structures have band gaps down to the audible frequency range, qualifying the structures for an application in noise isolation.

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APA:

Rausch, A., Küng, V., Pobel, C., Markl, M., & Körner, C. (2017). Predictive Simulation of Process Windows for Powder Bed Fusion Additive Manufacturing: Influence of the Powder Bulk Density. Materials, 10(10). https://dx.doi.org/10.3390/ma10101117

MLA:

Rausch, Alexander, et al. "Predictive Simulation of Process Windows for Powder Bed Fusion Additive Manufacturing: Influence of the Powder Bulk Density." Materials 10.10 (2017).

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