Method for improving torsional rigidity of vehicle body

Abstract

The invention discloses a method for improving torsional rigidity of a vehicle body, which comprises the following steps of: mounting an electromagnet on an opening piece or a vehicle body area in contact with the opening piece, and mounting a sensor for monitoring the extrusion state of the opening piece and the vehicle body and the bumping state of the vehicle on the vehicle; the road condition when the automobile runs is judged according to the extrusion state of the opening piece and the automobile body and the bumping state of the automobile, when the extrusion state of the opening piece and the automobile body and bumping of the automobile exceed threshold values, the road condition is severe, otherwise, the road condition is common, and the working state of the electromagnet is dynamically adjusted in real time according to the road condition; under the severe road condition, the electromagnet is powered on, the opening piece is attracted and fixed to the vehicle body to improve the connecting rigidity of the electromagnet and the vehicle body, the opening piece serves as a rigidity reinforcing component of the vehicle body to improve the torsional rigidity of the vehicle body, and then the working current of the electromagnet is increased if the severe degree is increased; under parking and common road conditions, the electromagnet is powered off. According to the method, the overall torsional rigidity of the vehicle body can be dynamically improved according to needs, and excessive rigidity improvement for a vehicle body beam system and joints is not needed.

Description

technical field [0001] The invention belongs to the field of automobiles, and in particular relates to a method for improving the torsional rigidity of a vehicle body. Background technique [0002] When the car is driving on a bumpy road, if the torsional rigidity of the car body is insufficient, the car body will experience large torsional deformation, which will cause impact and friction between the opening parts (door, back door, etc.) and the car body, resulting in abnormal noise and affecting the service life of the product. Reduce the ride comfort of customers; therefore, increasing the torsional stiffness of the car body is beneficial to reducing the body deformation when the car is driving on the road, thereby reducing the occurrence of abnormal noise and improving the durability of the car. [0003] At present, the general method of improving the torsional stiffness of the body is to optimize the beam section and joints of the body-in-white. This method increases th...

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Problems solved by technology

[0003] At present, the general method of improving the torsional stiffness of the body is to optimize the beam section and joints of the body-in-white. This method increases the beam structure, that is, increases the weight of the body, welding points, and production cycle, and the cost is relatively high. Moreover, the optimization area is concentrated in On the body-in-white frame, the optimization space is limited, and the problem of collision and friction between the opening parts and the body cannot be solved, and the stiffness cannot be dynamically adjusted according to the driving conditions of the car.

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