Starting lever forging is a common mechanical component used to transmit rotating power and withstand impact loads. Shock and vibration are important problems faced by starting rod forgings during operation, which have important influence on its performance, life and safety. Therefore, it is of great significance to analyze and control the shock and vibration characteristics of starting bar forgings.
The stress response, deformation and energy dissipation of starting rod forgings under impact load are studied. The impact resistance and failure mechanism of starter bar forgings can be evaluated by experimental test and numerical simulation. In terms of experimental testing, impact test instruments can be used to apply impact loads at different speeds and amplitudes, record stress-time curves and deformation images, and obtain the stress and deformation conditions under impact loads. In numerical simulation, the finite element model of starting rod forging can be established, appropriate boundary conditions and material parameters can be set up, the stress distribution and deformation under different impact loads can be simulated, and the failure criterion and life prediction of starting rod forging can be obtained.
The vibration characteristic analysis mainly focuses on the vibration response and dynamic characteristic of starting bar forgings under external excitation. The vibration load of different frequency and amplitude can be applied by the vibration test instrument to measure the vibration acceleration, speed and displacement and evaluate the vibration characteristics of the starting bar forging. In numerical simulation, finite element model can be established to simulate vibration mode, frequency response and stress distribution of starting rod forging. The vibration performance of starting bar forging can be optimized by simulating different vibration loads and structural parameters.
In order to control the shock and vibration of the starting rod forgings, the following strategies can be adopted:
1.Material selection: Select materials with high strength and good impact resistance to improve the impact resistance of forgings.
- Structural optimization: By optimizing the shape, size and structure of the forging parameters, improve its impact and vibration resistance.
- Shock absorption and vibration isolation design: The use of shock absorption materials, shock absorber parts and vibration isolation devices and other means to reduce the impact and vibration load of the starting rod forging.
- Vibration reduction measures: Add a vibration reduction device or use a torsion bar to reduce the amplitude and frequency of the starting bar forging and reduce the impact of vibration on the forging.
To sum up, the analysis and control of shock and vibration characteristics of starting rod forgings is an important work to ensure the safe operation of mechanical system and improve the life of starting rod forgings. By means of experimental test and numerical simulation, the response and failure mechanism of starting bar forgings under shock and vibration loading can be fully understood, and effective control strategies can be adopted to optimize its performance. This will provide an important reference for engineers and researchers to improve the reliability and practicality of starter bar forgings.
