| 摘要 |
PURPOSE:To suppress any mode of vibration by fixing optimally designed dynamic vibration absorbers respectively to the optimal installing positions for causing no linking with other vibration mode with single freedom system unit being separated for each vibration mode. CONSTITUTION:By utilizing the fact that a N-freedom system can be handled as a collection of N single freedom systems in a mode coordinates, mode analysis of a structure is executed to determine the optimal installing positions of dynamic vibration absorbers and equivalent masses at said positions, then the optimal design of the dynamic vibration absorbers installed with single freedom system unit is executed based upon said design data thus performing the vibration suppressing design of the entire vibration system. When the maximum amplitude of vibration mode appears at many points, dynamic vibration absorbers are installed at or near the nodes of the adjoining vibration mode. With such arrangement, addition of dynamic vibration absorbers causes no influence onto the vibration mode nor the linking with the adjoining mode. |
