In this paper, Newton iterative formula based on deviations of dropping point is deduced and the iterative program is designed, an example is given.

This article shows that the intricated network consisted by multi-nonlinear resistance can be analyzed by multidimensional Newton's iterative method and derives its formula.

In this paper, facing the convergent problem of plastic forming using large incremental step, we deduced the iterative formula used in analysis of elastic-plastic plate forming finite element method.