Load bearing contact area and load transmission error of hypoid gear tooth surface of drive axle

Before LTCA analysis, firstly, the three-dimensional model of hypoid gear needs to be aligned for finite element mesh generation to generate the finite element analysis model, as shown in Figure 1.

Finite element model of large wheel Finite element model of small wheel

Using the bevel gear manufacturing module of Masta software, the data are input into Masta software for LTCA analysis. The load contact area of hypoid tooth surface under meshing dislocation is shown in Figure 2, and the load transmission error curve (LTE) is shown in Figure 3.

As can be seen from the load contact area of hypoid tooth surface in Figure 2: with the increase of load, the area of hypoid tooth surface contact area gradually increases and the position of contact area gradually moves to the big end. Because the small wheel cutter adopts the convex angle trimming design, the hypoid tooth surface will not have edge contact. In addition, with the increase of load, the contact stress of hypoid tooth surface also increases gradually. It can be seen from Fig. 3 that with the increase of load, the amplitude of loading transmission error is basically increasing, but under the three loads of 200, 300 and 400 N · m, there is little difference between the amplitude of quasi double curved surface loading transmission error.

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