Table 1 Convergence study for bending, buckling, and free vibration solutions of the square nanoplates with b = 10 nm, \(\mu = 1\;{\text{nm}}^{2}\), and \(\overline{k}_{p} =\) 20 under different BCs.

From: New analytic bending, buckling, and free vibration solutions of rectangular nanoplates by the symplectic superposition method

Mechanical quantity

Number of series terms

BC

CCCC

CCCS

CCSS

SCSC

SCSS

SSSS

\({{10^{5} Dw\left( {{a \mathord{\left/ {\vphantom {a {2,{b \mathord{\left/ {\vphantom {b 2}} \right. \kern-\nulldelimiterspace} 2}}}} \right. \kern-\nulldelimiterspace} {2,{b \mathord{\left/ {\vphantom {b 2}} \right. \kern-\nulldelimiterspace} 2}}}} \right)} \mathord{\left/ {\vphantom {{10^{5} Dw\left( {{a \mathord{\left/ {\vphantom {a {2,{b \mathord{\left/ {\vphantom {b 2}} \right. \kern-\nulldelimiterspace} 2}}}} \right. \kern-\nulldelimiterspace} {2,{b \mathord{\left/ {\vphantom {b 2}} \right. \kern-\nulldelimiterspace} 2}}}} \right)} {\left( {q_{u} b^{4} } \right)}}} \right. \kern-\nulldelimiterspace} {\left( {q_{u} b^{4} } \right)}}\)

10

70.575

85.081

106.25

100.52

129.81

163.76

20

70.532

85.028

106.22

100.51

129.81

163.76

40

70.527

85.022

106.22

100.51

129.81

163.76

80

70.526

85.021

106.22

100.51

129.81

163.76

120

70.526

85.021

106.216

100.510

129.810

163.760

\({{10^{5} Dw\left( {{a \mathord{\left/ {\vphantom {a {2,{b \mathord{\left/ {\vphantom {b 2}} \right. \kern-\nulldelimiterspace} 2}}}} \right. \kern-\nulldelimiterspace} {2,{b \mathord{\left/ {\vphantom {b 2}} \right. \kern-\nulldelimiterspace} 2}}}} \right)} \mathord{\left/ {\vphantom {{10^{5} Dw\left( {{a \mathord{\left/ {\vphantom {a {2,{b \mathord{\left/ {\vphantom {b 2}} \right. \kern-\nulldelimiterspace} 2}}}} \right. \kern-\nulldelimiterspace} {2,{b \mathord{\left/ {\vphantom {b 2}} \right. \kern-\nulldelimiterspace} 2}}}} \right)} {\left( {q_{c} b^{2} } \right)}}} \right. \kern-\nulldelimiterspace} {\left( {q_{c} b^{2} } \right)}}\)

40

330.37

351.37

380.94

373.81

413.82

460.12

80

330.52

351.53

381.10

373.97

413.98

460.28

160

330.55

351.56

381.14

374.01

414.02

460.32

240

330.56

351.57

381.14

374.02

414.02

460.33

320

330.57

351.57

381.15

374.02

414.03

460.33

400

330.57

351.57

381.15

374.02

414.03

460.33

\({{ - N_{x}^{{{\text{critical}}}} b^{2} } \mathord{\left/ {\vphantom {{ - N_{x}^{{{\text{critical}}}} b^{2} } D}} \right. \kern-\nulldelimiterspace} D}\)

3

34.352

29.844

24.271

5

34.359

29.848

24.272

10

34.359

29.848

24.273

20

34.359

29.848

24.273

\(\omega b^{2} \sqrt {{{\rho h} \mathord{\left/ {\vphantom {{\rho h} D}} \right. \kern-\nulldelimiterspace} D}}\)

3

32.240

28.620

24.418

5

32.251

28.626

24.421

10

32.252

28.626

24.421

20

32.252

28.626

24.421