Pipe Resonator Structure for Bandgap Vibration Attenuation
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Solution Overview
Problem
Piping systems in oil and gas industries are prone to vibration-induced fatigue failures due to flow-induced, vortex-induced, and acoustic-induced vibrations, leading to potential economic and environmental disasters.
Innovation Solution
A vibration attenuation device and resonator system comprising connectors, beams, and weight materials attached to pipes, which create a bandgap frequency region to attenuate vibrations, utilizing semi-rings and flexible beams to suppress vibrations in piping systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vibration attenuation devices are added to piping systems, then vibration-induced fatigue failures are reduced, but device complexity increases
Solution Approach 1:
The vibration attenuation device is segmented into multiple independent components: connectors that attach to the piping system, beams that provide structural support, and weight materials that provide inertial damping. This segmentation allows each component to be optimized independently and facilitates easy installation and maintenance.
Solution Approach 2:
The device introduces an intermediary vibration attenuation system between the fluid flow and the piping structure. The weight materials attached to the beams act as intermediary elements that absorb and dissipate vibration energy, preventing it from being transmitted to the piping system.
2Reliability
If multiple components (connectors, beams, weight materials) are used to create bandgap frequency region, then vibration attenuation effectiveness is improved, but manufacturing complexity increases
Solution Approach 1:
The device is divided into separable components that can be manufactured independently using standard industrial processes. Connectors can be fabricated using conventional joining methods, beams can be produced through standard structural fabrication, and weight materials can be attached using conventional attachment techniques, thereby simplifying manufacturing.
Solution Approach 2:
The device allows for parameter optimization in each component independently. The mass, dimensions, and material properties of the weight materials and beams can be adjusted to achieve the desired bandgap frequency region without requiring complex integrated manufacturing processes.
3Reliability
If the device is designed to vibrate at frequencies approximating the primary structure, then vibration suppression is improved, but device complexity increases
Solution Approach 1:
The device utilizes parameter changes in the mass and stiffness of the beams and weight materials to tune the natural frequency of the attachment structure. By adjusting these parameters, the device can be tuned to vibrate at frequencies that approximate the primary structure's natural frequency, thereby maximizing vibration suppression through resonance coupling.
Solution Approach 2:
The device exploits mechanical vibration principles by designing the attachment structure with natural frequencies that match or approximate those of the primary piping structure. This allows the device to resonate with the structure's vibrations, effectively absorbing and dissipating vibrational energy through the weight materials.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively reduces vibrations by creating a bandgap frequency region, thereby mitigating fatigue failures and damage to piping components, and can be easily fabricated and integrated into existing piping systems.
Implementation Method 1
the resonator is configured to vibrate at frequencies in approximate to frequencies of the primary structure
Implementation Method 2
the resonator is configured to create a bandgap to the pipe, wherein the bandgap is a frequency region, and vibrations of the pipe are attenuated in the frequency region
Implementation Method 3
A vibration attenuation device and resonator system comprising connectors, beams, and weight materials attached to pipes
Data Source
AI summary
A vibration attenuation device is provided. The vibration attenuation device includes one or more connectors configured to be attached to a primary structure, a plurality of beams mounted on the one or more connectors, and a plurality of weight materials attached to the beams. The primary structure comprises at least one of a pipe, a rod or a shaft.