Vibration Damper With Clearance For Shocklike Energy Transfer
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Solution Overview
Problem
Existing vibration dampers are ineffective in damping a wide range of linear and nonlinear vibrations, as they primarily function within a narrow frequency range, failing to adequately mitigate the health risks associated with mechanical vibrations in machine operations.
Innovation Solution
A vibration damper design that incorporates a damping mass arrangement coupled to a machine component with a clearance, allowing for shocklike interactions that excite the damping mass at discrete intervals, effectively damping both linear and nonlinear vibrations by transmitting energy at intervals corresponding to vibration periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vibration absorber with spring-loaded damping mass arrangement is used, then damping vibrations can be generated in a narrow frequency range, but satisfactory damping cannot be achieved across a wide frequency range including nonlinear vibrations
Solution Approach 1:
The patent introduces a clearance between the damping mass arrangement and the machine component, allowing the system to dynamically adapt to different vibration frequencies. The clearance enables the damping mass to be excited by both linear and nonlinear vibrations across a wide frequency range, transforming the system from a static spring-loaded configuration to a dynamic one that can respond to varying vibration conditions.
Solution Approach 2:
The invention changes the coupling parameter between the damping mass and machine component by introducing a clearance. This parameter change allows the damping mass to be excited by vibrations of different frequencies and amplitudes, enabling effective damping across a broad frequency spectrum including nonlinear vibrations, rather than being limited to a narrow resonant frequency range.
2Use of energy by moving object
If continuous coupling between damping mass and machine component is used, then energy transmission is continuous, but nonlinear vibration components cannot be effectively damped
Solution Approach 1:
The clearance introduces a periodic interaction between the damping mass and machine component. The damping mass is excited at discrete time intervals corresponding to the vibration periods, creating a periodic action that effectively captures both linear and nonlinear vibration components. This periodic excitation through clearance-based coupling replaces continuous energy transmission with pulsed energy transfer that is more effective for nonlinear vibrations.
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
This solution enhances damping behavior across a broader frequency range, including nonlinear components, reducing operator exposure to harmful vibrations and harmonizing vibrations for easier handling, while also serving as an efficient and compact structural member arrangement.
Implementation Method 1
A vibration damper design that incorporates a damping mass arrangement coupled to a machine component with a clearance, allowing for shocklike interactions that excite the damping mass at discrete intervals, effectively damping both linear and nonlinear vibrations by transmitting energy at intervals corresponding to vibration periods
Data Source
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AI summary
The invention relates to a vibration damper for a machine component (1) which vibrates in the operating state thereof, wherein a damping mass arrangement is coupled to the machine component (1) via a clearance (3) and wherein the excitation of the damping mass arrangement (2) in at least one vibration direction originates from a substantially shock-like interaction between the damping mass arrangement (2) and the machine component (1). The invention leads to an increase in dampening efficiency due to the utilization of shock-like transfer of vibration energy.