Structural Dynamic Loading Simulation and Testing for Space Payload Systemc
Keywords:
Detector Head Assembly, Detector, Detector Mount, PCB, DHA frame, PSD response, Natural frequency.Abstract
Detector Head Assembly (DHA) is a one of the most important assembly of the optical space payload. It consists of
functional components namely detector, detector mount, PCB and DHA frame. Satisfactory functional performance of DHA under
space dynamic loading environment can be ensured by structural dynamic simulation & testing. In this paper, DHA is
characterized with dynamic simulation & testing. Random vibration of space environment levels are simulated & verified with the
responses obtained at critical locations during vibration testing. We obtained natural frequencies and PSD response of DHA
structure under the given dynamic loads using ANSYS software package. PSD responses of DHA along the normal (z axis) and
parallel (x & y axis) to the mounting plane are prediction in simulation and in testing, responses are actually measured along
normal to mounting plane at critical locations. The simulation results are correlated with the random vibration testing aspect.
