Study on Seismic Performance of Porcelain Pillar Electrical Equipment Based on Nonlinear Dynamic Theory

Table 3

Maximum stress value at the bottom end of porcelain pillar with the change of nonlinear rigidity under different seismic excitations.

Seismic excitation (g)	Maximum stress at the bottom end of porcelain pillar at the different values of η/(MPa)
	0	2 × 10^4	4 × 10^4	6 × 10^4	8 × 10^4	10 × 10^4	12 × 10^4
0.1	7.37	7.23	7.10	7.00	6.88	6.77	6.67
0.2	14.75	13.76	12.95	12.25	11.62	11.12	11.24
0.3	22.12	19.15	16.98	16.90	16.46	16.61	16.30
0.4	29.48	23.24	22.39	21.87	20.30	18.06	19.00
0.5	36.86	28.13	27.00	24.62	25.35	21.85	22.23