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A level set-based structural optimization code using FEniCS
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DOI：10.1007/s00158-018-1950-2.png)
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This paper presents an educational code written using FEniCS, based on the level set method, to perform compliance minimization in structural optimization. We use the concept of distributed shape derivative to compute a descent direction for the compliance, which is defined as a shape functional. The use of the distributed shape derivative is facilitated by FEniCS, which allows to handle complicated partial differential equations with a simple implementation. The code is written in the framework of linearized elasticity, and can be easily adapted to tackle other functionals and partial differential equations. We also provide an extension of the code for compliant mechanisms. We start by explaining how to compute shape derivatives, and briefly discuss the differences between the distributed and boundary expressions of the shape derivative. Then we describe the implementation in details, and show the application of this code to some classical benchmarks of topology optimization. The files are provided in Online Resource 1 to 3 and also available at http://antoinelaurain.com/compliance.htm. The main file is also given in the Appendix.
Keyword:
Level set method
Shape sensitivity analysis
FEniCS code
Education
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