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| Tests for a high stiffness and high damping structure |
| LIU Haiping1,2, DING Feng1, MA Tao1 |
1.School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2.Beijing Institute of Spacecraft System Engineering, Beijing 100094, China |
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Abstract A single pre-deformed carbon fiber beam, helical springs, disc springs and viscoelastic rubber blocks were used to form a high stiffness and high damping structure.Its bearing stiffness and damping were larger.In order to conveniently evaluate the mechanical performance of this structure, 3 technical indexes including equivalent elastic modulus, equivalent damping coefficient and equivalent stiffness coefficient were proposed to design its static and dynamic tests, verify the effectiveness of its design method and evaluate its mechanical performance.The test results showed that the equivalent elastic modulus of this structure is much larger than that of a single pre-deformed carbon fiber beam; with increase in excitation frequency, its equivalent damping coefficient decreases, while its equivalent stiffness increases, they are larger than 104 Ns/m and 107 N/m, respectively; so the design method for this structure is effective to realize the design goal of larger output stiffness and output damping.
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Received: 22 June 2018
Published: 28 January 2020
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