@Article{cmes.2020.010368,
AUTHOR = {Zhaohui Xia, Zhihao He, Qifu Wang, Yingjun Wang},
TITLE = {A New Finite Element Model with Manufactured Error for Additive Manufacturing},
JOURNAL = {Computer Modeling in Engineering \& Sciences},
VOLUME = {124},
YEAR = {2020},
NUMBER = {2},
PAGES = {703--720},
URL = {http://www.techscience.com/CMES/v124n2/39546},
ISSN = {1526-1506},
ABSTRACT = {Additive manufacturing (AM), adding materials layer by layer, can be
used to produce objects of almost any shape or geometry. However, AM techniques cannot accurately build parts with large overhangs, especially for the large
features close to horizontal, hanging over the void. The overhangs will make
the manufactured model deviate from the design model, which will result in
the performance of the manufactured model that cannot satisfy the design requirements. In this paper, we will propose a new finite element (FE) analysis model
that includes the manufacturing errors by mimicking the AM layer by layer construction process. In such FE model, an overhang coefficient is introduced to each
FE, which is defined by the support elements in the lower layer. By mimicking the
AM process from the bottom layer to the top layer, all the FE properties are
updated based on their overhang coefficients, which makes the computational
model be able to predict the manufactured model with manufacturing errors.
The proposed model can be used to predict the performance of the AM objects
in the design stage, which will help the designers to improve their design by
the simulation results.},
DOI = {10.32604/cmes.2020.010368}
}