Passive spring-damping negative stiffness damper for inhaul cable vibration mitigation
A negative stiffness, oil damper technology, applied in the direction of shock absorber-spring combination, shock absorber, spring/shock absorber, etc., can solve practical application limitations, complex operation and maintenance of semi-active control system, etc. Control effect, displacement increase, effect of large damping ratio
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0015] Example 1,
[0016] Combine figure 1 , A passive spring-damping negative stiffness damper for cable vibration reduction, including two sets of negative stiffness parts based on pre-compression springs, connecting arms, oil damper parts and an outer frame, and two sets of negative stiffness parts based on pre-compression springs It is located symmetrically on both sides of the connecting arm 10, and is hinged to both ends of the connecting arm 10. Each set of negative stiffness based on the pre-compression spring includes sliding bearing 1, pre-compression spring 2, baffle 3, linear bearing rod 4, support arm 5. Install the baffle 3, the pre-compression spring 2 and the sliding bearing 1 in sequence on the linear bearing rod 4. The sliding bearing 1 can move freely along the slot on the linear bearing rod 4, and the pre-compression spring 3 is located in the sliding bearing 1 and the baffle 3 In between, one end of the support arm 5 is fixedly connected to the outer frame 6...
Example Embodiment
[0017] Example 2,
[0018] Combine figure 2 The present invention provides a passive spring-damping negative stiffness damper for cable vibration reduction. The bottom of the passive spring-damping negative stiffness damper is fixedly installed on the main girder of a cable-stayed bridge, and the passive spring-damping negative stiffness damper has a piston The upper end of the rod is installed on the stay cable. When the cable vibrates greatly under the excitation of wind, wind and rain, the passive spring-damping negative stiffness damper produces negative stiffness output, which increases the displacement response of the connection and increases energy consumption , Provide a larger damping ratio to the cable, and achieve a better control effect.
Example Embodiment
[0019] Example 3,
[0020] Combine Figure 3-4 , The effectiveness of the passive spring-damping negative stiffness damper for cable vibration reduction of the present invention has been well verified in the model test, image 3 It is a comparison diagram of the force-displacement hysteresis curve between the damper of the present invention and the oil damper (the solid line is the oil damper, and the dashed line is the damper of the present invention). It can be seen that the output of the damper of the present invention has obvious negative stiffness characteristics; Figure 4 It is a comparison diagram of the control effect of the damper and the oil damper of the present invention, that is, the relationship between the first and second order additional modal damping ratio of the cable and the installation position (the dotted line is the result of no control, and the triangle mark is the result of the oil damper , The square marking is the result of the damper of the invention)...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap