TITLE:
Investigating the Damaging Effects of the Cyclic Discharge in the Uni-Axial Compression of Raphia vinifera L. Arecacea
AUTHORS:
Brice Poumegne Kouam, Didier Fokwa, Dieunedort Ndapeu, Médard Fogue
KEYWORDS:
Bamboo, Raphia, Cyclic Compression, Energy Dissipation
JOURNAL NAME:
World Journal of Engineering and Technology,
Vol.9 No.1,
December
16,
2020
ABSTRACT: The bamboo stem, when mature 5 to 6 years, serves as a building material
for modest houses and its marrow as packaging purposes. One of the strains
related to the uses of bamboo stem is most often the compression towards the
axial direction. The phenomenon of damage is very often observed during such
loading. The present study on raffia aims to analyze this phenomenon through
cyclical stresses as usual. From the results obtained, it was observed in the
stress-strain plane, that the area of the hysteresis
loops and the residual strain evolve with two parameters: the number of cycles
and the stress peaks. The study of energy dissipation has shown that it evolves
according to an exponential law as a function of the number of cycles. The
distribution of the energy rate along a stem shows that the samples from the
zone close to the base store twice (0.0412 MJ/m3) more energy than
the samples taken from the top of the foliage (0.019 MJ/m3).