The Analysis Of Dynamic Test On Space Shell And Space Truss

The part of dynamic test in ?The quality test of special truss and shell rules)) has not be in press. So different theoretical and test methods will be used to research the dynamic characteristics of special structures , then comparing ,counting and analyzing the results as to provide the base of rules in theory and test. Through test and academic analysis, the following jobs are finished.First, as to the space shell structure of gymnasium and natatorium in Dalian University of Technology, to test the stress ,modes of vibration and frequencies of gymnasium and natatorium when they are pulsatile and forced by instantaneous loads with the tool of Memory Recorder Analyzer EDX-1500A,imported from Japan.Second, ANSYS program is used to analysis their modes and instantaneous characteristics. Furthermore , by comparing and analyzing the two computing results ,the characteristic dynamic rules of space shell structure are resulted .Third, using DASP-Data Acquisition and Signal Processing System to gather and process the dynamic character of the truss when they are pulsatile and forced by the hammer with the loads of 200 kg/m2 or without loads. From the test, to summarize the regularity of dynamic character of the truss mode. Then, after computing and statistical analysis on a great deal of typical types of space truss, the scope of permitted frequency in normal use are educed.Last, the effect on structural basic frequency by partial scathing components and the scathing parts' position in the scathing space truss structure may be found out by anti-analysis. In the end, the practical and academic gist on authorizing the part of dynamic test of space truss and space shell in ((Rules of Quality Check and Accept on Space Truss and Shell)) are supported.