Z
Zhidong Zhang
Researcher at University of Waterloo
Publications - 14
Citations - 290
Zhidong Zhang is an academic researcher from University of Waterloo. The author has contributed to research in topics: Topology optimization & Computer science. The author has an hindex of 4, co-authored 10 publications receiving 104 citations. Previous affiliations of Zhidong Zhang include Northwestern Polytechnical University.
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Journal ArticleDOI
3-Dimensional heat transfer modeling for laser powder-bed fusion additive manufacturing with volumetric heat sources based on varied thermal conductivity and absorptivity
Zhidong Zhang,Yuze Huang,Adhitan Rani Kasinathan,Shahriar Imani Shahabad,Usman Ali,Yahya Mahmoodkhani,Ehsan Toyserkani +6 more
TL;DR: In this paper, a 3D heat transfer finite element model for laser powder-bed fusion (LPBF) was developed for accurately predicting melt pool dimensions and surface features, which can be used to reduce the process/material development costs.
Journal ArticleDOI
Topology optimization parallel-computing framework based on the inherent strain method for support structure design in laser powder-bed fusion additive manufacturing
Zhidong Zhang,Osezua Ibhadode,Usman Ali,Chinedu Francis Dibia,Pouyan Rahnama,Ali Bonakdar,Ehsan Toyserkani +6 more
TL;DR: The proposed framework is used to design stiffer support structures to reduce the before and after-cutting deflections in printed cantilevers to achieve over 60% reduction in part deflection and over 50% material usage reduction.
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Heat source model calibration for thermal analysis of laser powder-bed fusion
Shahriar Imani Shahabad,Zhidong Zhang,Ali Keshavarzkermani,Usman Ali,Yahya Mahmoodkhani,Reza Esmaeilizadeh,Ali Bonakdar,Ehsan Toyserkani +7 more
TL;DR: In this paper, an efficient numerical-experimental approach has been introduced to calibrate the parameters of a proposed three-dimensional (3D) conical Gaussian moving laser heat source model.
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Topology optimization of structures under design-dependent pressure loads by a boundary identification-load evolution (BILE) model
TL;DR: This model is particularly attractive because of its ease of application and computational cost-effectiveness as most numerical results for 2D problems using 5000 to 13,000 isoparametric quad elements were obtained under 90 s and 100 iterations using the optimality criteria method (OCM).
Journal ArticleDOI
On the effect of thin-wall thickness on melt pool dimensions in laser powder-bed fusion of Hastelloy X: Numerical modeling and experimental validation
Shahriar Imani Shahabad,Usman Ali,Zhidong Zhang,Ali Keshavarzkermani,Reza Esmaeilizadeh,Alireza Bonakdar,Ehsan Toyserkani +6 more
TL;DR: In this paper , a 3D heat transfer model is developed to investigate the influence of the thickness of the printed thin-walls on melt pool dimensions and temperature distribution, which can be extended to the multi-track simulation for investigating the effect of thin-wall thicknesses on Melt pool geometries.