Comparison of normalized central deflections, , of symmetric [0/90/0] plates for different a/h ratios, computed using three shear deformation theories and the CLT..

Table 6: Comparison of normalized central deflections, , of symmetric [0/90/0] plates for different a/h ratios, computed using three shear deformation theories and the CLT.

Normalized Moment,, of [0/90/0] Plates under Uniform Load
Boundary Condition	a/h	LCST (Zig-Zag) FEA [111]	TSDT [93-94,99-100]	FSDT [72,111]	CLT [60,72,111]	Degree of Shear Flexibility^‡ (Zig-Zag vs. TSDT)
SS1 [72,100]	4			108.598	109.748	Zig-Zag theory yields somewhat greater shear-flexibility than TSDT (-22.119% vs. -16.32%)
SS3 [111]	4	101.072	101.072	108.598	109.748
SS4 [72,100]	4			108.598	109.748
SS2/SS3 [93]	4			108.598	109.748
C4/SS3 [94]	4			41.413
C3 [72,99]	4			32.162
SS1 [72,100]	10			125.278	125.992	Zig-Zag theory yields slightly greater shear-flexibility than TSDT (-4.652% vs. -3.467%)
SS3 [111]	10	123.74	123.74	125.278	126.0
SS4 [72,100]	10			125.278	125.993
SS2/SS3 [93]	10			125.278	125.993
C4/SS3 [94]	10			45.844
C3 [72,99]	10			36.828
SS1 [72,77]	20			128.688	128.897	Computed Zig-Zag theory and TSDT (0.149% vs. -0.839%) results are very close
SS3 [111]	20	129.97	129.97	128.688	128.91
SS4 [72,77]	20			128.688	128.898
SS2/SS3 [93]	20			128.688	128.898
C4/SS3 [94]	20			45.744
C3 [72,99]	20			39.119
SS1 [72,77]	100			129.800	129.808	Computed TSDT, FSDT and CLT values are indistinguishably close
SS3 [111]	100			129.800	129.808
SS4 [72,77]	100			129.800	129.808
SS2/SS3 [93]	100			129.800	129.808
C4/SS3 [94]	100			44.980
C3 [72,99]	100			39.834

% D e g r e e o f S h e a r F l e x i b i l i t y = \frac{S D T x - C L T}{C L T} 100, x = Z i g - Z a g o r H S D T