Stringer structure for frontal offset crash test and crash test method

Abstract

The invention discloses a stringer structure for a frontal offset crash test. The stringer is a square tube with a rectangular cross-section, two ends of the stringer are respectively in fastening connection with a stringer joint, the stringer joint connected with the end portion of the stringer through the end portion of the stringer joint is also a square tube with a rectangular cross-section, and a longitudinal centerline of the stringer joint and a longitudinal centerline of the stringer intersect and form an angle of less than 180 degrees. With the above technical scheme, the front end of the stringer is subjected to a bending moment during the test, and performance of the stringer in vehicle frontal offset crash is simulated, and thus, safety performance of the vehicle frontal offset crash is verified, the current test method of using a vehicle to do the frontal offset crash is replaced, test cost is reduced, test period is shortened, and the safety performance of the vehicle frontal offset crash can be predicted.

Description

technical field [0001] The invention belongs to the technical field of automobile safety design, and relates to a test structure of a longitudinal beam. More specifically, the invention relates to a longitudinal beam structure used for a frontal offset collision test. In addition, the present invention also relates to a crash test method for the longitudinal beam structure. Background technique [0002] At present, the research on the frontal offset crash test mainly uses a 40% offset deformable barrier to collide with the whole vehicle, so as to evaluate the safety performance of the body structure. In addition to the crash test of the whole vehicle, the body structure component test is rarely used to verify the safety of the body structure. [0003] The vehicle frontal offset crash test has the following disadvantages: [0004] First, the cost of testing with a complete vehicle and variable barriers is too high. Generally, one test is not enough to achieve the goal, and ...

AI Technical Summary

Problems solved by technology

[0004] First, the cost of testing with a complete vehicle and variable barriers is too high. Generally, one test is not enough to achieve the goal, and multiple tests are required;

[0005] Second, after the general vehicle crash test is completed, the vehicle cannot be reused due to collision deformation;

[0006] Third, the cycle of the vehicle test is longer, and the flexibility is not as high as that of the component test;

[0007] Fourth, at present, some enterprises or universities are trying to verify the safety performance of the full frontal collision of the vehicle by using the component test of the longitudinal beam vertically hitting the rigid wall, but the longitudinal beam component test to verify the safety performance of the frontal offset collision of the vehicle has not yet been carried out.

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