Based on wave mechanics theory, the dynamic response characteristics of cantilever flexible wall in two-dimensional site are analyzed. The partial derivative of the vibration equation of soil layer is obtained, and the general solution of the volume strain is obtained by the separation of variables method. The obtained solution is substituted back to the soil layer vibration equation to obtain the displacement vibration general solution. Combined with the soil-wall boundary condition and the orthogonality of the trigonometric function, the definite solution of the vibration equation is obtained. The correctness of the solution is verified by comparing the obtained solution with the existing simplified solution and the solution of rigid retaining wall, and the applicable conditions of each simplified solution are pointed out. Through parameter analysis, it is shown that when the excitation frequency is low, the earth pressure on the wall is greatly affected by the soil near the wall. When the excitation frequency is high, the influence of the far-field soil on the earth pressure of the wall gradually increases. The relative stiffness of the wall, the excitation frequency and the soil layer damping factor have a significant effect on the dynamic response of the flexible retaining wall.

The effect of tempearture, strain rate and strain on the structure and plastic properties of metals and alloys has been widely known, and improvement of above mentioned features by changes of deformation conditions only has been rather exhausted, but the effect of strain path changes is less known especially in the case of massive processes. Therefore the effect of different complex strain paths on behavior of CuSi3.5 silicon bronze has been investigated. The strain paths contain various sequences of cyclic torsion and monotonic tension were applied. The amplitude was changed in the range of 0.01-0.6, temperature 20-800 °C and strain rate O.Ol-I s _,_ The platic properties and structure obtained in complex strain paths were compared with those gained in monotonic torsion and tensile tests. The silicon bronze containing about 3.5 % Si has a very low stacking fault energy, therefore in the mechanism of complex deformation the twinnings and crystalographic slip play the imporatant role. The strain paths similar to those applied in the experiments are observed in some industrial processes. By proper chosen of the strain path the control of the flow stress and the limit strain can be obtained.