TY - JOUR
T1 - Equistrong Branchy Composite Beams with a Constant Total Area of Variable Elliptic Cross Sections
AU - Polilov, A. N.
AU - Tatus, N. A.
AU - Tian, X.
AU - Arutjunova, A. S.
N1 - Publisher Copyright:
© 2019, Springer Science+Business Media, LLC, part of Springer Nature.
PY - 2019/7/15
Y1 - 2019/7/15
N2 - It is shown that it is possible to create branchy and shaped composite leaf springs with a constant cross-sectional area and three-fold reduced weight, at a given level of accumulated elastic energy, by choosing an appropriate spring geometry. The advantages of branching in comparison with shaping are the absence of cut fibers, exclusion of fiber disorientation, and the possibility of decreasing the spring size by combining its leafs into a bundle. The use of a unidirectional GFRP makes it possible to multiply reduce the spring weight compared with that of a steel analog with the same strength and stored energy requirements. An efficient use of branchy composite springs is possible for transport systems and, in the future, for space-based constructions due to their low weight and the extremely low energy of their production, and these factors allow one, in principle, to create such springs directly in orbit conditions.
AB - It is shown that it is possible to create branchy and shaped composite leaf springs with a constant cross-sectional area and three-fold reduced weight, at a given level of accumulated elastic energy, by choosing an appropriate spring geometry. The advantages of branching in comparison with shaping are the absence of cut fibers, exclusion of fiber disorientation, and the possibility of decreasing the spring size by combining its leafs into a bundle. The use of a unidirectional GFRP makes it possible to multiply reduce the spring weight compared with that of a steel analog with the same strength and stored energy requirements. An efficient use of branchy composite springs is possible for transport systems and, in the future, for space-based constructions due to their low weight and the extremely low energy of their production, and these factors allow one, in principle, to create such springs directly in orbit conditions.
KW - Leonardo’s rule
KW - branchy and shaped structure
KW - composite material
KW - elliptic cross section
KW - equistrong leaf spring
KW - low-modulus and high-strength GFRP
KW - stored elastic energy
UR - https://www.scopus.com/pages/publications/85069448437
U2 - 10.1007/s11029-019-09815-y
DO - 10.1007/s11029-019-09815-y
M3 - 文章
AN - SCOPUS:85069448437
SN - 0191-5665
VL - 55
SP - 325
EP - 336
JO - Mechanics of Composite Materials
JF - Mechanics of Composite Materials
IS - 3
ER -