Q. Wang’s scientific contributions

The mechanism of yield-unloading excitation for elastoplastic dynamic structure systems is analyzed, and a method is presented to calculate the excitation effects. A study on the moving modal space indicates that there exists a Coriolis acceleration division in the motion of an elastoplastic dynamics structural system that correlates to the time-variant stiffness excitation leading to the yield unloading effect. Based on a time-dependent integral analysis in which the dynamic system stiffness is stationary in time, a supplementary energy equation is established to describe the changes in energy distribution caused by the changes of the secant stiffness vector. In the paper, a computational procedure for the time-variant stiffness excitation effect is proposed.