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Parallelogram Plate Edges Fixed Stress and Deflection Equation and Calculator
Parallelogram plate (skew slab) all edges fixed with uniform loading over entire plate Stress and Deflection Equation and Calculator.
Per. Roarks Formulas for Stress and Strain for flat plates with straight boundaries and constant thickness
Preview: Parallelogram plate uniform loading over entire plate Stress and Deflection Calculator
Parallelogram Plate
Uniform Loading Over Entire Plate |
Stress Along Longer Edge Toward Obtuse Angle
Stress at Center of Plate
Deflection at Center of Plate:
Note: θ and a/b must BOTH have values
θ
|
a/b
|
1.00
|
1.25
|
1.50
|
1.75
|
2.00
|
2.25
|
2.50
|
3.00
|
0°
|
β1
|
0.308
|
0.400
|
0.454
|
0.481
|
0.497
|
-
|
-
|
-
|
β2
|
0.138
|
0.187
|
0.220
|
0.239
|
0.247
|
-
|
-
|
-
|
|
α
|
0.0135
|
0.0195
|
0.0235
|
0.0258
|
0.0273
|
-
|
-
|
-
|
|
15°
|
β1
|
0.320
|
0.412
|
0.483
|
0.531
|
0.553
|
-
|
-
|
|
β2
|
0.135
|
0.200
|
0.235
|
0.253
|
0.261
|
-
|
-
|
|
|
α
|
0.0127
|
0.0189
|
0.0232
|
0.0257
|
0.0273
|
-
|
-
|
|
|
30°
|
β1
|
-
|
0.400
|
0.495
|
0.547
|
0.568
|
0.580
|
-
|
-
|
β2
|
-
|
0.198
|
0.221
|
0.235
|
0.245
|
0.252
|
-
|
-
|
|
α
|
-
|
0.0168
|
0.0218
|
0.0249
|
0.0268
|
0.0281
|
-
|
-
|
|
45°
|
β1
|
-
|
-
|
0.394
|
0.470
|
0.531
|
0.575
|
0.601
|
-
|
β2
|
-
|
-
|
0.218
|
0.244
|
0.260
|
0.265
|
0.260
|
-
|
|
α
|
-
|
-
|
0.0165
|
0.0208
|
0.0242
|
0.0265
|
0.0284
|
-
|
|
60°
|
β1
|
-
|
-
|
-
|
-
|
0.310
|
0.450
|
0.538
|
0.613
|
β2
|
-
|
-
|
-
|
-
|
0.188
|
0.204
|
0.214
|
0.224
|
|
α
|
-
|
-
|
-
|
-
|
0.0136
|
0.0171
|
0.0198
|
0.0245
|
Where:
q = Applied load (force) (lbs/in2)
v = Poisson’s ratio (assumed to be 0.3)
β = Table data for a/b = 2.0
α = Table data for a/b = 2.0
E = Modulus of Elasticity (lb/in2)
a = Width of plate (in)
b = Height of plate (in)
σmax = stress, (lbs/in2)
ymax = Deflection (in)
Reference:
Roarks Formulas for Stress and Strain, 7th Edition