Lightweight Design of Electric Vehicle Differential Housing Structure


Release time:

2022-11-17

The initial conditions of the two-wheel drive differential set the initial conditions of the two-wheel drive model. When loading, it is felt that the larger output torque conveyed by the derived rotating shaft The entire differential system software achieves instantaneous force balance. The bearings on both sides of the tube bundle differential housing have six degrees of freedom, which can fix the radial rotation playability of the transmission shaft gear, and release the other five playability. The large planetary gear and the transmission shaft gear make friction and touch on the journal. tetrahedron module is selected for the model, rb2 and rb3 modules are selected for the connection module, and the circumferential force, axial force and radial force of the tooth profile of the differential gear are loaded at the same time. When connecting the differential housing and the differential gear with screws, it is necessary


The initial conditions of the two-wheel drive differential set the initial conditions of the two-wheel drive model. When loading, it is felt that the larger output torque conveyed by the derived rotating shaft The entire differential system software achieves instantaneous force balance. The bearings on both sides of the tube bundle differential housing have six degrees of freedom, which can fix the radial rotation playability of the transmission shaft gear, and release the other five playability. The large planetary gear and the transmission shaft gear make friction and touch on the journal. tetrahedron module is selected for the model, rb2 and rb3 modules are selected for the connection module, and the circumferential force, axial force and radial force of the tooth profile of the differential gear are loaded at the same time. When the differential housing and the differential gear are connected by screws, the bolt pre-tightening force shall be loaded. In addition, if you want to simplify the analysis, according to the symmetry of the model structure, you can generally select five parts from the half circle of the differential gear to load the three-way force, and the intersection angle between adjacent parts is 45 degrees. The four-wheel drive differential housing is analyzed in accordance with the statistical analysis method of the two-wheel drive differential housing to enhance the interpretation of the housing spline shaft.

差速器壳体

Under the straight-line driving condition of Section 3, according to the stress-strain curve weather map and deformation variable of the analysis post-processing process, it can be compared and distinguished according to the data in the performance parameters of the raw materials matched by the differential housing and the high value of the risk position in the analysis data. The shape variable can be comprehensively considered according to the material performance and the application standard in the product design scheme.

The overall design and simulation analysis of horizontal transmission is a crucial design task in the product development process. The differential housing is an important load-bearing and transmission system component in the overall process of the horizontal gearbox. Its accurate parameter design and proofreading analysis data are not only very important to the differential itself, but also directly affect the driving force of the whole vehicle and the conversion. Safety factor. The deformation data information of the differential housing and matching parts in various working conditions can also be used as a prerequisite for the calibration of the rear axle transmission device to enter data, which is of great value to the overall speed control range and the body.

The lightweight design method of an electric vehicle differential housing structure is scientifically studied, the differential housing model is created according to the service platform, and the static analysis and response analysis are carried out to confirm that the differential housing has sufficient optimized indoor space. In order to optimize the relative density of the region as the independent variable of the design scheme, the large stress shall not exceed the yield strength of the material, the first-order resonance frequency shall not be lower than the inherent frequency caused by the key encouragement as the tube bundle, and the optimization of the regional quality is the main goal, and the topology optimization of the differential housing structure is carried out. After optimization, the quality of the differential housing is reduced by about 13.6% compared with that before optimization, reaching the compressive strength requirement and the resonance frequency is relatively high, and the lightweight design of the differential housing theory is completed.

As a relatively small overall range in auto parts, the differential is generally regarded as a part of the drive design plan. It is designed and explained independently. At this stage, most of the lightweight methods only consider the static state. The performance hazards of data, very little consideration is given to the dynamic performance of the differential shell theory.

The lightweight design method of an electric vehicle differential housing structure is studied. In order to optimize the regional quality less as the main goal, at the same time, taking into account the static data and dynamic characteristics of the differential shell theory, the tensile strength of raw materials and its key encouragement caused by the vibration frequency of the differential shell theory as constraints to carry out topology optimization of the differential shell, and the optimization conclusion and the original model data are compared to verify the rationalization of the secondary design.