contributor author | Wang, Dan | |
contributor author | Zhao, Xinyu | |
contributor author | Chen, Xu | |
date accessioned | 2022-02-06T05:25:31Z | |
date available | 2022-02-06T05:25:31Z | |
date copyright | 3/5/2021 12:00:00 AM | |
date issued | 2021 | |
identifier issn | 2689-6117 | |
identifier other | aldsc_1_3_031012.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4278002 | |
description abstract | Despite the advantages and emerging applications, broader adoption of powder bed fusion (PBF) additive manufacturing is challenged by insufficient reliability and in-process variations. Finite element modeling and control-oriented modeling have been shown to be effective for predicting and engineering part qualities in PBF. This paper first builds a finite element model (FEM) of the thermal fields to look into the convoluted thermal interactions during the PBF process. Using the FEM data, we identify a novel surrogate system model from the laser power to the melt pool width. Linking a linear model with a memoryless nonlinear submodel, we develop a physics-based Hammerstein model that captures the complex spatiotemporal thermomechanical dynamics. We verify the accuracy of the Hammerstein model using the FEM and prove that the linearized model is only a representation of the Hammerstein model around the equilibrium point. Along the way, we conduct the stability and robustness analyses and formalize the Hammerstein model to facilitate the subsequent control designs. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | New Hammerstein Modeling and Analysis for Controlling Melt Pool Width in Powder Bed Fusion Additive Manufacturing | |
type | Journal Paper | |
journal volume | 1 | |
journal issue | 3 | |
journal title | ASME Letters in Dynamic Systems and Control | |
identifier doi | 10.1115/1.4050079 | |
journal fristpage | 031012-1 | |
journal lastpage | 031012-5 | |
page | 5 | |
tree | ASME Letters in Dynamic Systems and Control:;2021:;volume( 001 ):;issue: 003 | |
contenttype | Fulltext | |