For the dynamic mechanical response and vibration analysis of aluminum forgings of construction machinery, the following steps can generally be carried out:
- Material properties and mechanical properties analysis: First of all, we need to understand the properties and mechanical properties of the aluminum forging materials used, including elastic modulus, yield strength, elongation, etc. These parameters will serve as the basis for subsequent vibration analysis.
- Modal analysis: Modal analysis can obtain the natural frequency and vibration mode of aluminum forgings in free vibration state. The geometric model of aluminum forgings is established by finite element method, and the natural frequency and corresponding mode of the structure are obtained by solving the eigenvalue problem.
- Dynamic excitation analysis: Analyze the external excitation under different working conditions, such as engine vibration, uneven road, etc., to determine the vibration source of aluminum forgings. The dynamic response of the structure is simulated and calculated by input of these external excitation into the finite element model.
- Strength analysis: While conducting dynamic mechanical response analysis, the strength of aluminum forgings should also be considered. Based on the results of the analysis, the stress and deformation of the structure under working conditions are evaluated to ensure that it meets the design requirements.
- Vibration control and optimization: According to the analysis results, corresponding control measures and optimization programs can be taken for existing vibration problems. For example, the vibration amplitude can be reduced by increasing the reinforcement of thin-walled structures, optimizing the connection mode and adjusting the structural parameters.
- Experimental verification: In order to verify the accuracy of the simulation analysis results, vibration tests can also be carried out to collect the actual response data of aluminum forgings. The accuracy of the model is further improved by comparing the simulation results and the test data.
Through the above steps, the dynamic mechanical response and vibration of aluminum forgings of construction machinery can be effectively analyzed and evaluated, providing a basis for design and optimization, and ensuring its safety and stability in the working state.
