Abstract
Based on product simulation software, FEA method is used to identify the structural modal of instrumented indentation equipment frame which is the main supporting part of the High-precision instrumented indentation tester developed and realized by our group. From dynamic finite element computations, the multistage natural frequencies of tester frame are derived. The first 6 ranks vibration frequencies are all less than 10Hz, therefore, the loading and unloading process should be kept in quasi static state so as to prevent system resonance.
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