Experiments were conducted to measure the three-dimensional static and vibratory response of two graphite-epoxy, thin-walled, open section frames. The frames are semi-circular with a radius of three feet. One specimen has an I cross section and the other had a channel cross section. The experimental data is used to evaluate a mixed finite element model of the frames that is based on Vlasov-type, thin-walled, open section curved beam theory.
Get full access to this article
View all access options for this article.
References
1.
Boitnott, R.L. and H.D. Carden.1986. "Drop Testing and Analysis of Six-Foot Diameter Graphite-Epoxy Frames," in the Proceedings of the AHS Specialists Meeting on Crashworthy Design of Rotorcraft , April, 1986.
2.
Boitnott, R.L. and E.L. Fasanella.1989. "Impact Evaluation of Composite Floor Sections,"SAE Technical Paper Series891018.
3.
Pifko, A.B., R. Winter and P.L. Ogilvie.1987. "DYCAST-A Finite Element Program for Crash Analysis of Structures," NASA CR 4040, Contract NAS1-13148.
4.
Noor, A.K., J.M. Peters and B.-J. Min.1988. "Mixed Finite-Element Models for Free Vibrations of Thin-Walled Beams," NASA Technical Paper 2868
5.
Collins, J.S. and E.R. Johnson.1990. "Static and Free-Vibrational Response of Semi-Circular Graphite-Epoxy Frames with Thin-Walled Open Sections," NASA CR 4287.
6.
Vlasov, V.Z.1959. Thin-Walled Elastic Beams, Second EditionMoscow, translated from Russian and published for the National Science Foundation , Washington, D.C., 1961.
7.
Bauld, N.R. and L.-S. Tzeng.1984. "A Vlasov Theory for Fiber-Reinforced Beams with Thin-Walled Open Cross Sections,"International Journal of Solids and Structures, 20(3):277-297.
