We developed an open source for a direct multiscale topology optimization method for additive manufacturing (AM) of coated structures with nonperiodic infill by employing an adaptive mapping technique of adaptive geometric components (AGCs). The AGCs consist of a framework of macro-sandwich bars that represent the macrostructure with the solid coating and a network of micro-solid bars that represent the nonperiodic infill at the microstructural scale. 3D prototypes can be made by 3D printed machine after smoothing technique is solved.

Structure of AdapConTOPCoatedStructNonperiodicInfill package:

1. MainProgram: main program for running topology optimization problems.
2. Other functions are given in subfolders.
3. How to run AdapConTOPCoatedStructNonperiodicInfill

• Define a new problem following code structures
• Run MainProgram.m
• Get output
• Call program for smoothing boundaries of final design to print out 3D prototypes

• Van-Nam Hoang
• Phuong Tran
• Ngoc-Linh Nguyen
• Klaus Hackl
• Hung Nguyen-Xuan

Vietnam National Foundation for Science and Technology Development (NAFOSTED) under grant number 107.01-2019.317

Van-Nam Hoang, Phuong Tran, Ngoc-Linh Nguyen, Klaus Hackl, H. Nguyen-Xuan, Adaptive concurrent topology optimization of coated structures with nonperiodic infill for additive manufacturing, Computer-Aided Design, 129, 102918, 2020 https://www.sciencedirect.com/science/article/pii/S0010448520301111