TY  - EJOU
AU  - Du, Jiazheng 
AU  - Chen, Ju 
AU  - Ye, Hongling 
AU  - Lin, Bing 
AU  - Guo, Zhichao 

TI  - Smooth Boundary Topology Optimization—A New Framework for Movable Morphable Smooth Boundary Method
T2  - Computer Modeling in Engineering \& Sciences

PY  - 2025
VL  - 144
IS  - 1
SN  - 1526-1506

AB  - The traditional topology optimization method of continuum structure generally uses quadrilateral elements as the basic mesh. This approach often leads to jagged boundary issues, which are traditionally addressed through post-processing, potentially altering the mechanical properties of the optimized structure. A topology optimization method of Movable Morphable Smooth Boundary (MMSB) is proposed based on the idea of mesh adaptation to solve the problem of jagged boundaries and the influence of post-processing. Based on the ICM method, the rational fraction function is introduced as the filtering function, and a topology optimization model with the minimum weight as the objective and the displacement as the constraint is established. A triangular mesh is utilized as the base mesh in this method. The mesh is re-divided in the optimization process based on the contour line, and a smooth boundary parallel to the contour line is obtained. Numerical examples demonstrate that the MMSB method effectively resolves the jagged boundary issues, leading to enhanced structural performance.
KW  - Movable Morphable Smooth Boundary; continuum structure; topology optimization; jagged boundary; ICM method

DO  - 10.32604/cmes.2025.066676