| Abstract: | The analytical development of a uniaxial test for the seismic qualification of electrical equipment is presented. This method comprises a single test using a uniaxial excitation having certain minimum intensity applied at the base of the test package in a predetermined optimal direction. It is anticipated that the proposed procedure would be more economical and less time consuming than, but functionally equivalent to, presently employed series of multiaxial tests. The test is shown to be superior to the symmetric tests. The determination of the minimum intensity of the optimal orientation of the base excitation requires a preliminary frequency response test which is a slightly more elaborate version of the sine sweep test presently employed to determine the resonance frequencies of the test package. A simulated test is presented to compare the proposed method with the uncorrelated triaxial test and the symmetric uniaxial test. |
