We propose a new multiscale topology optimization approach for the direct and simultaneous design of lattice materials, without material homogenization at the microscale, using adaptive geometric components. The adaptive geometric components are projected onto macro- and micro-element density fields to calculate the effective densities of grid elements. Macro-and microstructures are simultaneously optimized, considering the load and boundary conditions of the overall structure without any additional constraints. 3D prototypes can be made by 3D printed machine after smoothing technique is solved.
Structure of DirectMultiscaleTOP package:
- mainProgram: main program for running topology optimization problems.
- Other functions are given in subfolders.
- How to run DirectMultiscaleTOP
- 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
- Van-Tuyen Vu
- Hung Nguyen-Xuan
Vingroup Innovation Foundation (VINIF) in project code VINIF.2019.DA04
Van-Nam Hoang, Phuong Tran, Van-Tuyen Vu, H. Nguyen-Xuan, Design of lattice structures with direct multiscale topology optimization, Composite Structures, 252, 112718, 2020 https://www.sciencedirect.com/science/article/pii/S0263822320326441