On the forces that cable webs under tension can support and how to design cable webs to channel stresses
On the forces that cable webs under tension can support and how to design cable webs to channel stresses
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关于拉力下的索网可以支撑的力以及如何设计索网来引导应力
DOI:
10.1098/rspa.2018.0781
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Seppecher, Pierre
中科院分区:
文献类型:
--
作者:
Bouchitté, Guy;Mattei, Ornella;Milton, Graeme W.;Seppecher, Pierre
In many applications of structural engineering, the following question arises: given a set of forcesf1,f2, …,fNapplied at prescribed pointsx1,x2, …,xN, under what constraints on the forces does there exist a truss structure (or wire web) with all elements under tension that supports these forces? Here we provide answer to such a question for any configuration of the terminal pointsx1,x2, …,xNin the two- and three-dimensional cases. Specifically, the existence of a web is guaranteed by a necessary and sufficient condition on the loading which corresponds to a finite dimensional linear programming problem. In two dimensions, we show that any such web can be replaced by one in which there are at mostPelementary loops, where elementary means that the loop cannot be subdivided into subloops, and wherePis the number of forcesf1,f2, …,fNapplied at points strictly within the convex hull ofx1,x2, …,xN. In three dimensions, we show that, by slightly perturbingf1,f2, …,fN, there exists a uniloadable web supporting this loading. Uniloadable means it supports this loading and all positive multiples of it, but not any other loading. Uniloadable webs provide a mechanism for channelling stress in desired ways.
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DOI:
--
发表时间:
1934
期刊:
影响因子:
--
作者:
M. D. Kirszbraun
通讯作者:
M. D. Kirszbraun
影响因子:
3.5
作者:
G. Bouchitté;W. Gangbo;P. Seppecher
通讯作者:
P. Seppecher
影响因子:
--
作者:
F. Fraternali;G. Carpentieri
通讯作者:
G. Carpentieri
影响因子:
4.7
作者:
M. Ahmadizadeh
通讯作者:
M. Ahmadizadeh
DOI:
10.1016/j.ijsolstr.2017.08.035
发表时间:
2017
期刊:
arXiv: Mathematical Physics
影响因子:
--
作者:
G. Milton
通讯作者:
G. Milton