The deformation behavior and stress analysis of automobile forgings are of great significance to manufacture and design because they are subjected to great stress and deformation during forging. The following is about the deformation behavior of automobile forgings and some aspects of stress analysis: deformation behavior: Automobile forgings in the process of heating, forging and cooling, will experience the influence of temperature and mechanical loading, resulting in deformation. Among them, the most important deformation includes elastic deformation, plastic deformation and rebound. Elastic deformation refers to the reversible elastic recovery of the forgings after stress, while plastic deformation refers to the irreversible deformation of the forgings after exceeding its yield point. Rebound refers to the shape deviation of the forging due to elastic recovery after release from load. Stress analysis: In the forging process, automobile forgings are subjected to complex stress states, including axial stress, shear stress, normal stress and so on. The strength, toughness and deformation of forgings can be evaluated by stress analysis. Common methods include finite element analysis (FEA), stress calculation and experimental testing. In the stress analysis, it is necessary to consider various mechanical loads, constitutive relations of materials and geometric shapes. Deformation control and optimization: Through the deformation behavior and stress analysis of automobile forgings, deformation control and optimization design can be carried out for specific parts and process conditions. For example, the springback deformation can be reduced and the accuracy of forging can be improved by increasing the obvious plastic area, adjusting the geometry, selecting the material reasonably or using heat treatment. In addition, the mechanical properties and appearance quality of forgings can also be improved through reasonable process parameter selection and cooling control. Material constitutive model and parameter determination: For accurate stress analysis, it is necessary to use accurate material constitutive model and related parameters. Material constitutive model describes the mechanical behavior of materials, including linear elastic model and nonlinear elastic-plastic model. The constitutive parameters of materials can be determined by experimental test, numerical simulation and literature. In a word, the deformation behavior and stress analysis of automobile forgings is helpful to optimize the forging process, improve the quality and performance of parts, and provide the basis for process design and product reliability analysis. Through reasonable deformation control and optimal design, it can meet the requirements of safety, accuracy and reliability of the automobile industry.
