Simultaneous shape and topology optimization method for frame structures with multi-materials

2021 ◽  
Author(s):  
Masatoshi Shimoda ◽  
Shoki Tani
Keyword(s):  
Topology Optimization ◽  
Optimization Method ◽  
Frame Structures ◽  
Shape And Topology Optimization ◽  
And Topology ◽  
Topology Optimization Method

Parametric Structural Shape and Topology Optimization Method With Radial Basis Functions and Level-Set Method

2006 ◽  
Author(s):  
Peng Wei ◽  
Michael Yu Wang
Keyword(s):  
Topology Optimization ◽  
Radial Basis Functions ◽  
Level Set Method ◽  
Level Set ◽  
Optimization Method ◽  
Basis Functions ◽  
Structural Shape ◽  
Shape And Topology Optimization ◽  
And Topology ◽  
Topology Optimization Method

In this paper, a parametric structural shape and topology optimization method is presented. To solving structure optimization problems, the level-set method has become a powerful design tool and been widely used in many fields. Combined with the Radial Basis Functions (RBF), which is a popular tool in function approximation, the method of level-set can be represented in a parametric way with a set of advantages comparing with the conventional discrete means. Some numerical examples are presented to illustrate its advantages.

Optimal Design of Aero-Engine Stator Structure with Combined Shape and Topology Optimization Method

2011 ◽  
Vol 697-698 ◽  
pp. 623-626
Author(s):  
Jun Gang Yang ◽  
W.H. Zhang ◽  
Ji Hong Zhu
Keyword(s):  
Topology Optimization ◽  
Optimal Design ◽  
Optimization Problem ◽  
Lightweight Design ◽  
Optimization Method ◽  
Loading Conditions ◽  
Shape And Topology Optimization ◽  
And Topology ◽  
Aero Engine ◽  
Topology Optimization Method

In this paper, the lightweight design of an aero-engine stator structure is studied as an application case. Different kinds of loading conditions are taken into account. Mathematical formulations of the optimization problem are presented. Two optimization strategies combining shape and topology optimization are tested to get optimal design results.

Bridging Topological Results and Thin-Walled Frame Structures Considering Manufacturability

2021 ◽  
Vol 143 (9) ◽  
Author(s):  
Jiantao Bai ◽  
Yanfang Zhao ◽  
Guangwei Meng ◽  
Wenjie Zuo
Keyword(s):  
Topology Optimization ◽  
Cross Section ◽  
Structural Complexity ◽  
Optimization Method ◽  
Frame Structure ◽  
Frame Structures ◽  
Manufacturing Constraints ◽  
Numerical Examples ◽  
Thin Walled ◽  
Topology Optimization Method

Abstract Topology optimization has been intensively studied and extensively applied in engineering design. However, the optimized results often take the form of a solid frame structure; hence, it is difficult to apply the topological results in the design of a thin-walled frame structure. Therefore, this paper proposes a novel bridging method to transform the topological results into a lightweight thin-walled frame structure while satisfying the stiffness and manufacturing requirements. First, the optimized topological results are obtained using the classical topology optimization method, which is smoothed to reduce structural complexity. Then, the initial thin-walled frame structure is created by referring to the smoothed topological results, in which the thin-walled cross section is designed according to the mechanical properties and manufacturing requirements. Furthermore, the size and shape of the thin-walled frame structure is optimized to minimize mass with the stiffness and manufacturing constraints. Finally, numerical examples demonstrate that the proposed method can reasonably design an optimized thin-walled frame structure from the topological results.

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