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CONTROL OF BIFURCATION STRUCTURES USING SHAPE OPTIMIZATION
DOI:10.1137/21M1418708.png)
摘要
En 中文
Many problems in engineering can be understood as controlling the bifurcation structure of a given device. For example, one may wish to delay the onset of instability or bring forward a bifurcation to enable rapid switching between states. We propose a numerical technique for controlling the bifurcation diagram of a nonlinear partial differential equation by varying the shape of the domain. Specifically, we are able to delay or advance a given branch point to a target parameter value. The algorithm consists of solving a shape optimization problem constrained by an augmented system of equations, the Moore--Spence system, that characterize the location of the branch points. Numerical experiments on the Allen--Cahn, Navier--Stokes, and hyperelasticity equations demonstrate the effectiveness of this technique in a wide range of settings.
Keyword:
bifurcation analysis
shape optimization
Moore--Spence system
期刊
IF:
2.6
论文数:
5.1K
被引数:
1.8W
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