期刊
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
卷 112, 期 13, 页码 2025-2047出版社
WILEY
DOI: 10.1002/nme.5593
关键词
B-splines; isogeometric analysis (IGA); multiresolution; NURBS; refined sensitivity filter; topology optimization
资金
- NRF (National Research Foundation of Korea) [NRF-2015R1A2A1A01007535]
- MEST (Ministry of Education and Science Technology)
- National Research Foundation of Korea [2015R1A2A1A01007535, 22A20130012842] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The paper introduces a novel multiresolution scheme to topology optimization in the framework of the isogeometric analysis. A new variable parameter space is added to implement multiresolution topology optimization based on the Solid Isotropic Material with Penalization approach. Design density variables defined in the variable space are used to approximate the element analysis density by the bivariate B-spline basis functions, which are easily obtained using k-refinement strategy in the isogeometric analysis. While the nonuniform rational B-spline basis functions are used to exactly describe geometric domains and approximate unknown solutions in finite element analysis. By applying a refined sensitivity filter, optimized designs include highly discrete solutions in terms of solid and void materials without using any black and white projection filters. The Method of Moving Asymptotes is used to solve the optimization problem. Various benchmark test problems including plane stress, compliant mechanism inverter, and 2-dimensional heat conduction are examined to demonstrate the effectiveness and robustness of the present method.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据