About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing: Beyond the Beam III
|
Presentation Title |
Modeling of Effect of Powder Spreading on Green Body Dimensional Accuracy in Additive Manufacturing by Binder Jetting |
Author(s) |
Andrii L. Maximenko , Ifeanyichukwu Donald Olumor, A P. Maidaniuk, Eugene Olevsky |
On-Site Speaker (Planned) |
Ifeanyichukwu Donald Olumor |
Abstract Scope |
It is shown that Bullet Physics Engine can be used for Discrete Element modeling of powder spreading during additive manufacturing by binder jetting. It is known that, due to technological restrictions, the thickness of deposited layers during binder jetting should not exceed several powder particle diameters making the application of continuum models of powder medium behavior to be problematic. The conducted modeling shows that dilation of the deposited powder and distortion of previously deposited layers depend on amount of powder removed during spreading, on the thicknesses of the deposited layers, and on the dimensions of the manufactured components. An empirical equation describing the distortion strain as a function of powder spreading parameters is suggested as an approximation of the numerical modeling results. The developed model is experimentally validated. As an optimum way of the powder layers’ deposition, a combination of the non-contact and the blade powder spreading approaches is recommended. |
Proceedings Inclusion? |
Planned: |
Keywords |
Other, Other, Other |