Effective isometries of periodic shells
Effective isometries of periodic shells
复制标题
周期壳的有效等距
DOI:
10.1016/j.jmps.2024.105553
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发表时间:
2024
影响因子:
5.3
通讯作者:
Weber, Andrew
中科院分区:
文献类型:
--
作者:
Nassar, Hussein;Weber, Andrew
We argue that the standard classification of isometric deformations into infinitesimal v.s. finite is inadequate for the study of compliant shell mechanisms. Indeed, many compliant shells, particularly ones that are periodically corrugated, exhibit low-energy deformations that are far too large to be infinitesimally isometric and far too rich to be finitely isometric. Here, rather than abandon the geometric standpoint in favor of a full theory of elastic shells, we introduce the concept ofeffective isometric deformationsdefined as deformations that are first-order isometric in a small scale separation parameter given by the ratio of the size of the corrugation to the size of the shell. The main result then states that effective isometries are solutions to a quasilinear second-order PDE whose type is function of an effective geometric Poisson’s ratio. The result is based on a self-adjointness property of the differential operator of infinitesimal isometries; it holds for periodic surfaces that are smooth, piecewise smooth or polyhedral, i.e., periodic surfaces with or without straight and curved creases. In particular, it unifies and generalizes a series of previous results regarding the effective Poisson’s ratio of parallelogram-based origami tessellations. Numerical simulations illustrate and validate the conclusions.
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影响因子:
0.7
作者:
Demaine, Erik D.;Demaine, Martin L.;Tachi, Tomohiro
通讯作者:
Tachi, Tomohiro
影响因子:
1.9
作者:
Nassar, Hussein
通讯作者:
Nassar, Hussein
影响因子:
4.7
作者:
Nassar, Hussein;Lebée, Arthur;Werner, Emily
通讯作者:
Werner, Emily
影响因子:
--
作者:
W. Schief;A. Bobenko;T. Hoffmann
通讯作者:
T. Hoffmann
DOI:
10.17863/cam.14058
发表时间:
2009
期刊:
ArXiv
影响因子:
--
作者:
A. D. Norman
通讯作者:
A. D. Norman