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- W2986571293 abstract "The rapid advancement in additive manufacturing makes it feasible to manipulate material orientation locally to construct optimized structure. The remaining question becomes: how to find such material orientation distribution to minimize/maximize properties of a additively manufactured structure? Despite much research has been done to solve this problem, they all have constraints and especially lack the study of optimization algorithm at the fundamental level. In this work, the objective is to use gradient descent method to find the optimal distribution of material orientation for anisotropic materials to minimize/maximize compliance under plane stress condition. We propose a rationalized formula referred to as normalized gradient by maximum (NGM) to calculate step length. Gradient descent method has been demonstrated at the fundamental level that it is well suited for solving this problem provided that a proper step length can be calculated. NGM calculates step length at nearly no extra cost to guarantee that iterative process convergences to a local/global extreme. NGM method is validated by a tensile and shear condition." @default.
- W2986571293 created "2019-11-22" @default.
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- W2986571293 date "2020-02-01" @default.
- W2986571293 modified "2023-09-27" @default.
- W2986571293 title "Orientation optimization in anisotropic materials using gradient descent method" @default.
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- W2986571293 doi "https://doi.org/10.1016/j.compstruct.2019.111680" @default.
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