Instrument development for measuring horizontal shock environment of ships
The measurement of the on-board equipment's shock environment is an important content in the underwater-explosion tests of ships and models.But,gaining the reliable horizontal shock environment is a challenge because of the multi-direction shock loads'coupling.For this reason,the instruments based on the clamped-clamped beam and eccentric-cam are designed for measuring horizontal shock environment according to the installation frequency range of the low frequency reed instrument and the examination environment of the horizontal-direction shock machine from the adaptation of vertical and horizontal stiffness.The single degree-of-freedom system's motion equation of two reeds are established.The proportional relationship of the reeds'impact response and the shock displacement spectrum are derived.Then,the shock environment of the installation position can be calculated by measuring the the reeds'impact response.On this basis,the series reeds meeting the installation frequency requirements and the prototype of the measuring horizontal shock environment instrument are designed and developed.Through the shock tests on the horizontal-direction shock machine,the measured dates obtained by the measuring horizontal shock environment instrument and the accelerometer can verify each other.The results show that the design of the measuring horizontal shock environment instrument is reasonable and available.
万方数据
维普
