科研之友
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摘要
Based on the dynamic property test of rubber bearings a mathematical model of which is established under the condition of random excitation. The mathematical model shows that under random excitation the hysteretic restoring force is not only relevant to the displacement and the speed but also relevant to the mean value and the standard deviation of the random displacement. With the model the "force-displacement" and "force-time" relationship under different sampling segments and working conditions is reconstructed and matches well with test results.
