The dynamic mechanical response analysis of construction machinery forging die is to study and evaluate the dynamic characteristics of the die in the injection molding process such as vibration, deformation and stress, so as to optimize the design and manufacturing process. Here are some important facts and methods about the analysis:
- Establishment of dynamic mechanical model:
- First of all, it is necessary to establish the dynamic mechanical model of the forging die of construction machinery, including the geometric shape, material properties and boundary conditions of the die.
- The finite element method can be used to establish a discrete model of the mold, and consider the dynamic characteristics of the mold such as rigid body motion, bending, torsion and vibration.
- Vibration analysis:
- Vibration analysis can be performed through modal analysis and frequency response analysis.
- Modal analysis can solve the natural frequency, mode and damping ratio and other modal parameters of the mold, analyze and evaluate the natural vibration characteristics of the mold.
- Frequency response analysis can analyze the dynamic response of the mold under external excitation, such as resonance, deformation and stress.
- Deformation and stress analysis:
- Deformation and stress analysis can be carried out by means of modal superposition and time-history analysis.
- Mode superposition method is to combine the external excitation waveform and mode mode, and calculate the overall deformation and stress response of the mold through the superposition of the mode response.
The time-history analysis rule is to consider the time-variation of external excitation, and solve the dynamic deformation and stress of the mold under different working conditions in a time-step way.
- Optimized design and improvement:
- According to the analysis results, the design of the forging die of construction machinery can be optimized and improved to improve its dynamic performance.
- For example, by reducing mass, adjusting structural stiffness, adding shock absorbers or enhancing mold support, reduce the vibration amplitude and resonance risk of the mold, and minimize mold deformation and stress.
To sum up, the dynamic mechanical response analysis of construction machinery forging die mainly includes modeling, vibration analysis, deformation and stress analysis, as well as optimization design and improvement. Through these analyses and methods, the dynamic response and performance of the mold during injection molding can be predicted and evaluated, thereby optimizing the mold design and improving its durability and manufacturing efficiency.
