OCTOBER 19-20, 2012 - YMCA University of Science & Technology

Proceedings of the National Conference on
Trends and Advances in Mechanical Engineering,
YMCA University of Science & Technology, Faridabad, Haryana, Oct 19-20, 2012
∆T=0 0 C, 4.9298 0.1201 0.0036 0.0134 0.1208
∆T=100 0 C, 4.8528 0.1200 0.0165 0.0129 0.1207
∆T=200 0 C, 4.7742 0.1224 0.0272 0.0127 0.1230
∆T=300 0 C, 4.7075 0.1252 0.0356 0.0127 0.1259
Table 2(b)Effect of environmental conditions and input random variables bi{i=1…8, 7-8, 9-10,1-10= 0.10} on the
buckling of a angle ply (±45 0 2) T square laminated composite plate resting on Pasternak (k1=100, k2=10) elastic
foundation with ( a/h=50), ,V f =0.6, T 0 =25 0 C, Simple Support(S2).
Environmental
Conditions.
Wmax/
h
(KN)
Pasternak foundations (k1=100, k2=10)
Coefficient of variation (SD/ Mean)
bi
(i=1- 8) (i=7.-8) (i=9-10) (i=1-10)
∆T=0 0 C, 6.0523 0.1224 0.0029 0.0142 0.1232
∆T=100 0 C 5.9537 0.1279 0.0134 0.0150 0.1288
∆T=200 0 C, 5.8525 0.1312 0.0222 0.0152 0.1321
∆T=300 0 C, 5.7661 0.1340 0.0291 0.0152 0.1349
6. Nomenclature
Aij Bij, Laminate stiffness
a, b : Plate length and breadth
h
Thickness of the plate
Ef, Em : Elastic moduli of fiber and matrix
Gf, Gm : Shear moduli of fiber and matrix
vf, vm : Poisson’s ratio of fiber and matrix
Vm, Vf : Volume fraction of fiber and matrix
αf, αm : Coefficient of thermal expansion of fiber and matrix
bi
Basic random material properties
E11, E22 : Longitudinal and Transverse elastic moduli
G12,G13,G2 : Shear moduli
3 Kl, Knl : Linear and Nonlinear stiffness matrix
K1, K2 Normal and Shear stiffness of the foundation,
Kg
: Thermal geometric stiffness matrix
M, m :
:
Mass and inertia matrices
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