Stability analysis of the two-phase torsional rigidity near a radial configuration
Stability analysis of the two-phase torsional rigidity near a radial configuration
复制标题
径向结构附近两相扭转刚度的稳定性分析
DOI:
10.1080/00036811.2018.1478082
复制
发表时间:
2018
影响因子:
1.1
通讯作者:
Cavallina Lorenzo
中科院分区:
文献类型:
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作者:
Cavallina Lorenzo
Letdenote the unit ball of() centered at the origin. We suppose thatcontains a core, given by a smaller concentric ball, made of a (possibly) different material. We discover that, depending on the relative hardness of the two materials, this radial configuration can either be a local maximizer for the torsional rigidity functionalEor a saddle shape. In this paper, we consider perturbations that simultaneously act on the boundariesand. This gives rise to resonance effects that are not present whenorare perturbed in isolation. A detailed analysis of the sign of the second order shape derivative ofEis then made possible by employing the use of spherical harmonics.
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
A. Novruzi;M. Pierre
通讯作者:
M. Pierre
影响因子:
1.8
作者:
M. Dambrine;D. Kateb
通讯作者:
D. Kateb
DOI:
--
发表时间:
1989
期刊:
影响因子:
--
作者:
J. Simon
通讯作者:
J. Simon