Feasibility study of aluminum alloy swinging arm instead of

Automobile lightweight design plays an important role in automobile research and development. Aluminum alloy material has become one of the important means of automobile lightweight design because of its good performance.

 

Forged aluminum alloy has excellent mechanical properties and good corrosion resistance, can be used for complex shape, uneven thickness of the support, wheels and other important parts, is also an ideal lightweight automotive materials.

 

Force transmission and direction is an important part of the car suspension system, the swing arm is connected to the subframe through the rubber bushing at one end, and the other Portugal is through the spherical ammonium with the steering knucks to transfer various forces on the steering wheel to the body, and to ensure that the wheels move according to certain tracks.

 

Due to the complexity of the actual load of the swing arm, when the stress on the swing arm reaches the allowable stress of the material, local cracks may occur, affecting the normal use of the vehicle, and even affecting the reliability of the vehicle. In this paper, the strength of forged aluminum alloy swing arm and the rocker arm of rigid structure are compared, and the feasibility of using aluminum alloy swing arm as rocker arm material instead of rigid structure swing arm is discussed.

 

 

 

Load extract

 

In order to obtain the load in all directions at the hard point of the swing arm, the first step is to calculate the load in all directions at the tyre contact point. Taking the braking condition as an example, FIG. 2 shows the braking force of the vehicle on the horizontal road surface.

 

The strength of the front swing arm of forged aluminum alloy was analyzed by using finite element method to simulate the test conditions of the bench.

 

The comparison of the safety coefficient and strength results of the forearm of steel structure shows that the forearm of forged aluminum alloy not only has the effect of light weight, but also improves the strength performance to a certain extent. But the full explanation of aluminum alloy forging brings all the structural properties that need to be done further in the following two aspects:

 

1. Conduct fatigue analysis on the front swing arm of forged aluminum alloy to predict the fatigue durability;

 

2. The strength and durability of the forged aluminum alloy swing arm were further tested, and the results of the finite element analysis were obtained.