In respect of variable coefficient differential equations, the equations of coefficient function approximation were more accurate than the coefficient to be fro
A universal numerical approach for nonlinear mathematic programming problems is presented with an application of ratios of first-order differentials/differences
The nonlocal friction law proposed by Oden et al. was adopted in order to consider the nonlocal friction effect of the asperities on the rough contact surface b
The optimum design method based on the reliability is presented to the stochastic structure systems (i. e., the sectional area, length, elastic module and stren