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Equistrong Branchy Composite Beams with a Constant Total Area of Variable Elliptic Cross Sections

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Mechanics of Composite Materials Aims and scope

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.

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Authors and Affiliations

  1. A. A. Blagonravov Mechanical Engineering Research Institute, Russian Academy of Sciences, Moscow, Russia

    A. N. Polilov, N. A. Tatus & A. S. Arutjunova

  2. State Key Laboratory of Engineering Manufacturing Systems, Xi’an Jiaotong University, China Xianning West Road, Xi’an, Shaanxi, 710049, P.R. China

    X. Tian

Authors
  1. A. N. Polilov
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  2. N. A. Tatus
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  3. X. Tian
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  4. A. S. Arutjunova
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Correspondence to A. N. Polilov.

Additional information

Translated from Mekhanika Kompozitnykh Materialov, Vol. 55, No. 3, pp. 465-482, May-June, 2019.

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Polilov, A.N., Tatus, N.A., Tian, X. et al. Equistrong Branchy Composite Beams with a Constant Total Area of Variable Elliptic Cross Sections. Mech Compos Mater 55, 325–336 (2019). https://doi.org/10.1007/s11029-019-09815-y

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  • DOI: https://doi.org/10.1007/s11029-019-09815-y

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