Porous structural design has attracted tremendous interest because of the advances in additive manufacturing and the superior characteristics of porous structures. This study presents a filter approach for porous structural design in the framework of single-scale density-based topology optimization. It in principle follows the idea to control porosity by limiting the local volume fraction of material.These local limits are usually incorporated into the optimization problem as a number of individual constraints or one condensed constraint. In contrast to the conventional constraint approach, a filter approach is proposed here to explicitly integrate these local limits into the material interpolation and have them automatically satisfied during the optimization iterations. A variety of numerical examples have been studied to validate the effectiveness of the filter approach.
|Title of host publication||Advances in Structural and Multidisciplinary Optimization : Proceedings of The World Congress of Structural and Multidisciplinary Optimization (WCSMO13)|
|Editors||Xu Guo, Hai Huang|
|Publisher||Dalian University of Technology Electronic & Audio-visual Press|
|Publication status||Published - 2019|
|Event||13th World Congress of Structural and Multidisciplinary Optimization - China National Convention Center, Beijing, China|
Duration: 20 May 2019 → 24 May 2019
Conference number: 13
|Conference||13th World Congress of Structural and Multidisciplinary Optimization|
|Location||China National Convention Center|
|Period||20/05/2019 → 24/05/2019|
Dou, S. (2019). Porous Structural Design for Additive Manufacturing and Improved Damage Tolerance. In X. Guo, & H. Huang (Eds.), Advances in Structural and Multidisciplinary Optimization: Proceedings of The World Congress of Structural and Multidisciplinary Optimization (WCSMO13) (pp. 240-244). Dalian University of Technology Electronic & Audio-visual Press.