User login

Navigation

You are here

A parameterized level set method for structural topology optimization based on the Cosserat elasticity——the Online First Article of Acta Mechanica Sinica

Acta Mechanica Sinica's picture

Journal Tittle: Acta Mechanica Sinica

Article Tittle: A parameterized level set method for structural topology optimization based on the Cosserat elasticity

Author: Chen, Lian Xiong; Wan, Ji; Chu, Xihua; Liu, Hui

 

Novelty/impact/significance

1.  Develop a parameterized level set topology optimization method based on the Cosserat elasticity

2.  The minimum feature size and the geometric complexity of the optimized structure can be controlled implicitly by adjusting the parameters of the characteristic length and Cosserat shear modulus.

 

Scientific question

When describing the mechanical behavior of some engineering materials, the Cosserat continuum theory has more powerful capabilities compared with the classical Cauchy elasticity since an additional local rotation of point and its counterpart (couple stress) are considered in the Cosserat elasticity. Consequently, the topology optimization of materials with microstructure is considered and solved by the parameterized level set method and the Cosserat continuum theory.

 

Key of how

The classic parameterized level set method is extended to the Cosserat continuum. Then, the structure is analyzed based on the Cosserat continuum theory. Finally, a minimum compliance problem of the Cosserat solids is built and solved.

 

Major points

1. The influence of material characteristic length and Cosserat shear modulus on the optimized structure is investigated in detail.

2. The minimum feature size of the optimized structure can be controlled implicitly through the microstructure constants.

 

Funding of the work

1. The National Natural Science Foundation of China (12072242, 11772237, 11472196)

2. The Hubei Provincial Natural Science Foundation (2020CFB816)

3. The Fundamental Research Funds for the Central Universities (2042018kf0016).

 

Please go to the website to read this article: http://ams.cstam.org.cn/EN/abstract/abstract157345.shtml

Subscribe to Comments for "A parameterized level set method for structural topology optimization based on the Cosserat elasticity——the Online First Article of Acta Mechanica Sinica"

Recent comments

More comments

Syndicate

Subscribe to Syndicate