Research Article

Estimation of Static Pull-In Instability Voltage of Geometrically Nonlinear Euler-Bernoulli Microbeam Based on Modified Couple Stress Theory by Artificial Neural Network Model

Table 2

The effects of different numbers of hidden neurons on the BP network performance.

Number of hidden neuronsEpochAverage error in (%) with newelm functionAverage error in (%) with newcf functionAverage error in (%) with newff function

41891412.3110.2712.30
5497014.3818.3820.19
617838.1911.6512.75
739849.729.3911.17
818846.368.2810.14
9277013.3911.8619.98
10268311.6716.4015.48