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

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Proceedings <strong>of</strong> the National Conference on<br />

Trends and Advances in Mechanical Engineering,<br />

<strong>YMCA</strong> <strong>University</strong> <strong>of</strong> <strong>Science</strong> & <strong>Technology</strong>, Faridabad, Haryana, Oct <strong>19</strong>-<strong>20</strong>, <strong>20</strong>12<br />

ne, n : Number <strong>of</strong> elements, number <strong>of</strong> layers in the laminated plate<br />

Nx,Ny,Nxy In-plane thermal buckling loads<br />

nn<br />

: Number <strong>of</strong> nodes per element<br />

Ni<br />

: Shape function <strong>of</strong> ith node<br />

p<br />

:<br />

C ijkl<br />

Reduced elastic material constants<br />

f,{f}(e)<br />

:<br />

u, v, w<br />

:<br />

u u u , ,<br />

1, 2,<br />

3<br />

σ ij , ε ij<br />

ψ<br />

x<br />

, ψ<br />

y<br />

θ<br />

x<br />

, θ<br />

y<br />

, θ<br />

k<br />

ρ λ<br />

:<br />

:<br />

:<br />

Vector <strong>of</strong> unknown displacements, displacement vector <strong>of</strong><br />

either element<br />

Displacements <strong>of</strong> a point on the mid plane <strong>of</strong> plate<br />

Displacement <strong>of</strong> a point (x, y, z)<br />

Stress vector, Strain vector<br />

Rotations <strong>of</strong> normal to mid plane about the x and y axis<br />

Two slopes and angle <strong>of</strong> fiber orientation w.r.t x-axis for kth<br />

layer<br />

x, y, z<br />

Cartesian coordinates<br />

ρ, λ,<br />

var(.)<br />

: Mass density, eigenvalue, variance<br />

RVs : Random variables<br />

∆T<br />

: Difference in temperatures<br />

α1, α2 : Thermal expansion coefficients along x and y direction<br />

ne, n : Number <strong>of</strong> elements, number <strong>of</strong> layers in the laminated plate<br />

Nx,Ny,Nxy<br />

nn<br />

:<br />

Ni<br />

:<br />

p :<br />

C ijkl :<br />

f,{f}(e)<br />

:<br />

u, v, w<br />

:<br />

u1, u2,<br />

u<br />

3<br />

ρ, λ ,<br />

σ ij , ε ij<br />

ψ<br />

x<br />

, ψ<br />

y<br />

θ<br />

x<br />

, θ<br />

y<br />

, θ<br />

k<br />

:<br />

:<br />

:<br />

In-plane thermal buckling loads<br />

Number <strong>of</strong> nodes per element<br />

Shape function <strong>of</strong> ith node<br />

Reduced elastic material constants<br />

Vector <strong>of</strong> unknown displacements, displacement vector <strong>of</strong><br />

either element<br />

Displacements <strong>of</strong> a point on the mid plane <strong>of</strong> plate<br />

Displacement <strong>of</strong> a point (x, y, z)<br />

Stress vector, Strain vector<br />

Rotations <strong>of</strong> normal to mid plane about the x and y axis<br />

Two slopes and angle <strong>of</strong> fiber orientation w.r.t x-axis for kth<br />

layer<br />

x, y, z<br />

Cartesian coordinates<br />

ρ, λ,<br />

var(.)<br />

: Mass density, eigenvalue, variance<br />

RVs : Random variables<br />

∆T<br />

: Difference in temperatures<br />

α1, α2 : Thermal expansion coefficients along x and y direction<br />

266

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