Topology optimization and de-homogenization of graded lattice structures based on asymptotic homogenization

2021 ◽  
Vol 277 ◽  
pp. 114633
Author(s):  
Liang Xu ◽  
Zhenghua Qian
Keyword(s):  
Topology Optimization ◽  
Lattice Structures ◽  
Asymptotic Homogenization ◽  
Graded Lattice

Additive Manufacturing-Oriented Design of Graded Lattice Structures Through Explicit Topology Optimization

2017 ◽  
Vol 84 (8) ◽  
Author(s):  
Chang Liu ◽  
Zongliang Du ◽  
Weisheng Zhang ◽  
Yichao Zhu ◽  
Xu Guo
Keyword(s):  
Topology Optimization ◽  
Structure Design ◽  
Lattice Structures ◽  
New Approach ◽  
Optimization Framework ◽  
Concurrent Optimization ◽  
Design Variables ◽  
Graded Material ◽  
Graded Lattice ◽  
Moving Morphable Components

In the present work, a new approach for designing graded lattice structures is developed under the moving morphable components/voids (MMC/MMV) topology optimization framework. The essential idea is to make a coordinate perturbation to the topology description functions (TDF) that are employed for the description of component/void geometries in the design domain. Then, the optimal graded structure design can be obtained by optimizing the coefficients in the perturbed basis functions. Our numerical examples show that the proposed approach enables a concurrent optimization of both the primitive cell and the graded material distribution in a straightforward and computationally effective way. Moreover, the proposed approach also shows its potential in finding the optimal configuration of complex graded lattice structures with a very small number of design variables employed under various loading conditions and coordinate systems.

Design of graded lattice structures in turbine blades using topology optimization

2021 ◽  
Vol 34 (4) ◽  
pp. 370-384
Author(s):  
Ebrahim Ahmed Ali Alkebsi ◽  
Hacene Ameddah ◽  
Toufik Outtas ◽  
Abdallah Almutawakel
Keyword(s):  
Topology Optimization ◽  
Turbine Blades ◽  
Lattice Structures ◽  
Graded Lattice

Design of graded lattice sandwich structures by multiscale topology optimization

2021 ◽  
Vol 384 ◽  
pp. 113949
Author(s):  
Mi Xiao ◽  
Xiliang Liu ◽  
Yan Zhang ◽  
Liang Gao ◽  
Jie Gao ◽  
...  
Keyword(s):  
Topology Optimization ◽  
Sandwich Structures ◽  
Graded Lattice

Optimisation design of graded lattice structures for natural frequency

2020 ◽  
Vol 61 (2/3/4) ◽  
pp. 185
Author(s):  
Bin Tu ◽  
Huazhong Lu ◽  
Jian Mu ◽  
Xijia Liu ◽  
Tinghao Zhang ◽  
...  
Keyword(s):  
Natural Frequency ◽  
Lattice Structures ◽  
Graded Lattice
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