The structural strength analysis and optimal design of magnesium forgings of construction machinery are important links to ensure that they can withstand various loads and mechanical requirements during use. General analysis methods and design principles are described below to help achieve structural strength and optimization.
- Structural strength analysis method
- Mechanical analysis: First of all, mechanical analysis is required to determine the maximum load, working condition and stress of magnesium forgings of construction machinery. By using finite element analysis and other calculation methods, the stress distribution of different parts and joints can be obtained, and then the strength of the structure can be evaluated.
- Fatigue life analysis: For the fatigue load that magnesium forgings of construction machinery may be subjected to during long-term use, fatigue life analysis is required. Through the analysis of load history and stress amplitude, it is determined whether the structure can meet the fatigue strength requirements during the service life, and optimize the design to extend the fatigue life.
- Stiffness analysis: The stiffness of the structure is crucial to the normal operation and stability of magnesium forgings of construction machinery. Stiffness analysis can determine the deformation of the structure under different loads, so as to avoid the influence of excessive deformation and vibration on the performance.
Second, the principle of optimal design
- Reasonable geometry: In the optimization design, it is necessary to select a reasonable geometry according to engineering requirements and mechanical analysis results, including edge bending radius, wall thickness compression ratio, etc. Reasonable geometry helps to improve the strength and stiffness of the structure and reduce the occurrence of stress concentration.
- Material selection and treatment: Choosing the right material is an important factor to ensure the strength of magnesium forgings of construction machinery. The material should have good strength and toughness, and take into account the wear resistance, corrosion resistance and high temperature resistance under actual working conditions. In addition, the application of different material treatment methods for different parts, such as heat treatment, surface treatment, etc., can improve the strength of the structure and extend the service life.
- Strengthen the design of joints: the connection parts of the structure are susceptible to stress concentration and fatigue damage, so special attention is needed in the design process. Appropriate strengthening measures, such as increasing the number of connection pairs, welding or bolted connection, can improve the strength and stability of the connection parts.
- Optimize stress distribution: By adjusting the geometry and structural layout of magnesium forgings of construction machinery, a reasonable distribution of stress can be achieved. Avoiding stress concentration and reducing stress peak value is conducive to improving the strength and fatigue life of the structure.
In short, the structural strength analysis and optimal design of magnesium forgings of construction machinery is an important link to ensure its normal operation and safe use. Through scientific mechanical analysis, fatigue life assessment and stiffness analysis, combined with reasonable geometric shape design, material selection and treatment and strengthening the joint design principles, we can achieve the best balance of structural strength and performance of magnesium forgings of construction machinery, improve its service life and reduce the risk of failure.
