Reinforcement structure between front wheel casing and longitudinal beam and vehicle body adopting same

Abstract

The invention provides a reinforcement structure between a front wheel casing and a longitudinal beam, comprising a front wheel casing assembly and a longitudinal beam, wherein the front wheel casing assembly comprises a front wheel casing front plate; the longitudinal beam is provided with a longitudinal beam sealing plate; the front wheel casing front plate is provided with a main plate and a side plate; the edge of the main plate, facing the outer side of the vehicle body, is a front side edge; and the side plate is connected to the longitudinal beam sealing plate. The reinforcement structure further comprises a supporting reinforcing plate which is provided with adjacent first connecting edge and second connecting edge; the first connecting edge is connected to the front side edge; and the second connecting edge is connected to the longitudinal beam sealing plate. The invention also provides a vehicle body, wherein the front part structure of the vehicle body includes the reinforcement structure between the front wheel casing and the longitudinal beam. Compared with the prior art, the reinforcement structure between the front wheel casing and the longitudinal beam and the vehicle body adopting the structure provided by the invention have the advantage of improving the torsional rigidity and stability of the whole vehicle.

Description

technical field [0001] The invention relates to a reinforced structure of an automobile body, in particular to a reinforced structure between a front wheel cover and a longitudinal beam. Background technique [0002] The design of the car body structure directly affects the performance of the car. The car body structure is the installation basis of all parts of the car. It must not only ensure the structural strength of the car body, but also maintain the stability and safety of driving. The front structure of the body includes main load-bearing components such as longitudinal beams, water tank beams, sub-frames and front wheel house side beams. [0003] At present, there are mainly problems in the durability road test of the wheel house structure, such as cracking of the front plate of the front wheel house, unstable mounting points of the front suspension, insufficient torsional rigidity, and poor formability. According to CAE software analysis, there is a stress concentr...

AI Technical Summary

Problems solved by technology

[0003] At present, there are mainly problems in the durability road test of the wheel house structure, the front plate of the front wheel house is cracked, the mounting point of the front suspension, the surface is unstable, the torsional rigidity is insufficient, and the formability is poor.

According to the CAE software analysis, there is a stress concentration (216Mpa) at the cracking position, which is very close to the yield limit of the material (280Mpa); according to the actual vehicle and CAE software formability analysis, there are wrinkles at the cracking position, which will have a certain impact on the cracking

Since the front wheel house and the longitudinal beam have no support plate reinforcement structure, the mounting surface of the front suspension support plate is easily deformed and the mounting holes are easily misplaced; the torsional rigidity of the vehicle is insufficient, and the highest torsional stress point of the vehicle appears on the front plate of the front wheel house. According to CAE software analysis, the maximum stress on the front plate of the front wheel house reaches 224Mpa under the torsion condition of the whole vehicle; since the battery support plate is welded on the wheel house, the stress on the front plate of the front wheel house will further increase after increasing the weight of the battery , the stress on the wheel house assembly reaches the yield limit; the corners where the front wheel house front plate and the longitudinal beam are connected appear thinning and wrinkling

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