A uniform pantographic deployable column consists of identical scissor-like elements placed along a straight line. Structural behaviour of such a column under lateral, moment and axial loads is studied. Assumptions include linearity, sufficiently large number of units in a column and certain restrictions on the degree of deployment. The corresponding deflections for each load are obtained both including and neglecting axial deformations of bars in pantographic units. The overall bending and axial stiffnesses of deployable column are derived by equating its deflections to those of a uniform solid column of the same length. Similarities and differences between the two structures are outlined.
Get full access to this article
View all access options for this article.
References
1.
GantesC.ConnorJ.J.LogcherR.D., Equivalent Continuum Model for Deployable Flat Lattice Structures, Journal of Aerospace Engineering, ASCE, 7(1), 1994, 72–91.
2.
HernandesM.CarlosH., Deployable Structures, Proceedings of International Conference on Mobile and Rapidly Assembled Structures (MARAS 91), Computational Mechanics Publications, Southampton, UK, 1991, 237–248.
3.
KwanA. S. K.PellegrinoS., The Pantographic Deployable Mast: Design, Structural Performance and Deployment Tests, Proceedings of International Conference on Mobile and Rapidly Assembled Structures (MARAS 91), Computational Mechanics Publications, Southampton, UK, 1991, 213–224.
4.
KwanA. S. K.YouZ.PellegrinoS., Active and Passive Cable Elements in Deployable/Retractable Masts, International Journal of Space Structures, 8(1&2), 1993, 2940.
5.
RaskinI.RoodaJ., Buckling Force for Deployable Pantographic Columns, Proceedings of the 2nd International Conference on Mobile and Rapidly Assembled Structures (MARAS 96), Computational Mechanics Publications, Southampton, UK, 1996, 305–314.
6.
RaskinI.RoodaJ., Stiffness of Geometrically Non-Linear Pantographic Column, Proceedings of the 16th Canadian Congress of Applied Mechanics (CANCAM 97), Laval University, Sainte-Foy, Quebec, Canada, 1, 1997, 27–28.
7.
RaskinI.RoodaJ., Stability of Non-Linear Pantographic Column, Proceedings of the 1997 Conference of the Canadian Society for Civil Engineering, CSCE, Montreal, Quebec, Canada4, 1997, 49–57.
8.
RaskinI.RoodaJ., Non-Linear Uniform Pantographic Column in Compression, Journal of Engineering Mechanics, ASCE, 1997 (submitted).
9.
SastreR., Expandable Arches, Proceedings of the 2nd International Conference on Mobile and Rapidly Assembled Structures (MARAS 96), Computational Mechanics Publications, Southampton, UK, 1996, 124–131.
10.
ShanW., Computer Analysis of Foldable Structures, Computers and Structures, 42(6), 1992, 903–912.
11.
ValcarcelJ.P.EscrigF., Recent Advances in the Analysis of Expandable Structures, Proceedings of the 2nd International Conference on Mobile and Rapidly Assembled Structure (MARAS 96), Computational Mechanics Publications, Southampton, UK, 1996, 45–54.
