2 results about "Mass spring" patented technology

This invention discloses a vibration reduction method for constant stiffness railway tracks. This method, while ensuring the absolute constancy of the track stiffness, utilizes the resonance principle to achieve effective vibration reduction through vibration absorbers, completely changing the traditional vibration reduction method that reduces track stiffness through a mass-spring system. In this method, vibration absorbers are pre-embedded in the track bed and foundation. Precise resonance tuning achieves the absorption and dissipation of vibration energy in specific frequency bands. The spring stiffness of the vibration absorber is calculated based on its own mass and the frequency band requiring vibration reduction, according to the formula for a single-degree-of-freedom undamped spring-mass system. A precise track-vibration absorber system model is established using a computer for dynamic simulation calculations to predict the system's vibration reduction performance. Based on the feedback information from the calculation results, the vibration absorber parameters and arrangement scheme are readjusted, and simulation calculations are performed again. Through iterative optimization, the vibration reduction requirements are met.

The present application relates to a kind of envelope shaping equipment full rotational quantity rigid-flexible coupling dynamics modeling and deformation prediction method, link and slider are simplified as double mass spring system by lumped mass method, moving platform is simplified as single center lumped mass-six circumferential distribution lumped mass twelve spring coupled system, rigid body displacement of each connecting pair is characterized by motion rotational quantity, the deformation displacement of each spring is characterized by deformation motion rotational quantity, finally coupling mass matrix and moment of inertia is established generalized mass matrix, and then the establishment equipment full rotational quantity characterization rigid-flexible coupling dynamics equation and realize equipment deformation prediction.The present application can quickly realize the solution of equipment real-time deformation rotational quantity and space motion rotational quantity, and then predict the deformation behavior of equipment, realize equipment precision compensation control, strength check and state monitoring.