Effective insights into the geometric stability of symmetric skeletal structures under symmetric variations
Effective insights into the geometric stability of symmetric skeletal structures under symmetric variations
复制标题
有效洞察对称变化下对称骨骼结构的几何稳定性
DOI:
10.1016/j.ijsolstr.2015.05.023
复制
发表时间:
2015-09
影响因子:
3.6
通讯作者:
Pooya Sareh
中科院分区:
文献类型:
--
作者:
Yao Chen;Jian Feng;Pooya Sareh
Geometric stability is a necessary criterion to guarantee stable equilibrium in engineering structures. However, we generally encounter enormous calculations to examine the geometric stability when we make variations on the geometry or the connectivity of a given kinematically and statically indeterminate structure. This study describes how symmetry is utilized to enhance the mobility and geometric stability analysis of symmetric skeletal structures. Symmetry-extended mobility distinguishes representations of the internal mechanisms and self-stress states from relative mobility based on their inherent symmetries using group-theoretic method. Thus, it acts as an efficient tool to evaluate the order of internal mechanisms that may be indistinguishable by traditional structural approaches. Further, it is used to gain effective insights into the mobility and geometric stability of a symmetric skeletal structure with symmetrically perturbed connectivity or geometry. The first-order changes of symmetry-extended mobility are deduced to describe the changes induced by the variations of nodal coordinates, members, and kinematic constraints, respectively. Examples are given to verify the correctness and effectiveness of the proposed method. We show that the geometry or connectivity of kinematically indeterminate symmetric skeletal structures can be altered while at the same time retaining geometric stability and some or all of the original symmetry. The results have potential application in the design of novel deployable structures.
登录
查看更多内容
影响因子:
6.4
作者:
F. Fan;Jiachuan Yan;Z. Cao
通讯作者:
F. Fan;Jiachuan Yan;Z. Cao
影响因子:
2.7
作者:
A. Kaveh;M. Nikbakht
通讯作者:
A. Kaveh;M. Nikbakht
影响因子:
3.6
作者:
N. Vassart;R. Laporte;R. Motro
通讯作者:
N. Vassart;R. Laporte;R. Motro
DOI:
10.1115/1.4025472
发表时间:
2014-05
期刊:
Journal of Mechanisms and Robotics
影响因子:
--
作者:
G. Wei;J. Dai
通讯作者:
G. Wei;J. Dai
DOI:
--
发表时间:
2012-09
期刊:
--
影响因子:
--
作者:
Y. Chen;S. Guest;P. Fowler;J. Feng
通讯作者:
Y. Chen;S. Guest;P. Fowler;J. Feng