Structural integrity of the composite chassis was validated in two ways; FEA analysis and vibration tests
. The analysis was conducted on a model battery including all structural components and components with significant mass.
(2.) Hoksbergen, J., "Bringing Broadband 6-D0F Field Vibration Environments into the Lab--Tensor 18kN Vibration Test
System," Sound & Vibration, March 2013.
- one of the many tests space-bound instruments are subjected to - are performed to ensure that spacecraft fit enough to tolerate the often hostile conditions they would have to face in space.
To guarantee the structural safety and successful on-orbit operation of the calibration mechanism in severe launch environments, launch vibration tests
such as sine burst test, random vibration test
, and shock test were carried out under qualification level.
In order to estimate amplitude-dependent parameters, the Random Decrement Technique was adopted in this study to process ambient vibration test
Using released method to carry out free vibration test
on indoor test model cable, the acceleration signal got by acceleration sensor of cable span is shown in Figure 12, cable displacement signal obtained by the frequency domain integral method is shown in Figure 13, and the spectrum curve got after FFT on model cable free vibration displacement time history is shown in Figure 14.
Laboratory 6-DOF vibration systems represent the latest chapter in a long history of refining the accuracy of laboratory vibration tests
. MDOF excitation and control systems continue improving and are standard equipment in many vibration test
Stand basement during vibration test
was fixed with 4 screws on reference platform.
proved that the plane was very rigid, or stiff.
Figure 1a shows a diagram of the flexural vibration test
. In 1921, Timoshenko presented the following differential equation of flexure, in which the shear deflection and rotary inertia were taken into account:
In the transverse vibration test
, it was adopted the free-free boundary condition, due to the ease of get it effectively.
Full shock and vibration test
reports are available at www.schroff.co.uk/testreports.