12 / 14
Ю.В. Захарова, Л.Г. Лохматова
12
Инженерный журнал: наука и инновации
# 11·2016
Simulation of stress-strain state
of defected composite shells
© Yu.V. Zakharova, L.G. Lokhmatova
Bauman Moscow State Technical University, Moscow, 105005, Russia
The paper examines an important problem of modeling the stress-strain state of the
defected composite shells. The issue is a promising one because presently shells made of
composite materials often serve as elements of different bearing constructions and it is often
impossible to avoid defects even at the manufacturing stage. We propose a mathematical
model of deformation of defected cylindrical shells made of composite materials. The model is
based on Timoshenko hypothesis. We examined defects of disbond type and with the help of
this model we described an algorithm for solving the problem of stress-strain state of defected
cylindrical shells. For the numerical solution of the problem we used the finite element
method. The presented results of numerical simulations have established patterns of influence
of local imperfections in the structure on the stress-strain state of cylindrical shell made of
composite materials with defects such as disbonds.
Keywords:
stress-strain state, cylindrical shell, composite materials, Timoshenko shell
model, disbonds.
REFERENCES
[1]
Choudhry R.S., Hassan Syed F., Li S., Day R. Damage in single lap joints of
woven fabric reinforced polymeric composites subjected to transverse impact
loading.
International Journal of Impact Engineering
, 2015, vol. 80, pp. 76–93.
[2]
DimitrienkoYu.I., Sokolov A.P., Shpakova Yu.V., Yurin Yu.V.
Nauka i obra-
zovanie — Science and Education
, 2012, no. 11. DOI: 10.7463/1112.0496336
(accessed July 5, 2016).
[3]
Guz A.N., Grigorenko Ya.M., Babich
I.Yu.et al.
Mekhanika kompozitnykh ma-
terialov i elementov konstruktsiy. V 3 tomakh. Tom 2.
Mekhanika elementov
konstruktsii
[Mechanics of Composite Materials and structural elements. In 3
vols. Vol. 2. Mechanics of structural elements]. Kiev, Naukova dumka Publ.,
1983, 464 p.
[4]
Dimitrienko Yu.I., Minin V.V., Syzdykov E.K.
Mekhanika kompozitsionnykh
materialov i konstruktsiy — Mechanics of composite materials and structures
,
2011, vol. 17, no. 1, pp.71–90.
[5]
Kaledin V.O., Aulchenko S.M., Mitkevich A.B., Reshetnikova E.V., Sedova E.A.,
Shpakova Yu.V.
Modelirovanie statiki i dinamiki obolochechnykh konstruktsii iz
kompozitnykh materialov
[Simulation of statics and dynamics of shell structures
made of composite materials]. Moscow, Fizmatlit Publ., 2014, 196 p.
[6]
Aulchenko S.M., Kaledin V.O., Shpakova Yu.V. Characteristic features of the oscil-
lation of shells of bodies of revolution immersed in a viscous fluid flow.
Journal of
Engineering Physics and Thermophysics
, 2008, vol. 81, iss. 5, pp. 941–944.
[7]
Laptev N.I., Mordasov V.I., Poilov V.V., Shulepova O.V. Laser vibrodiagnos-
tics of starved spots of large-sized multilayered honeycomb shells.
Polymer Sci-
ence
.
Series D
, 2010, vol. 3, no. 4, pp. 263–266.
[8]
Cawley P. Low frequency NDT techniques for the detection of disbonds and de-
laminations.
NDT & E International
, 1992, vol. 25, no. 2, pp. 100. DOI:
10.1016/0963-8695(92)90556-V (accessed July 5, 2016).