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Method for detecting static rigidity of light passenger car body

A detection method and static stiffness technology, which are applied in the field of static stiffness detection of light passenger car bodies, can solve problems such as reliability doubts, adverse vehicle performance problems, and reduced availability of results, and achieve verification accuracy, and the detection method is simple and reliable. , the effect of the detection method

Inactive Publication Date: 2010-06-23
NANJING AUTOMOBILE GROUP CORP
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AI Technical Summary

Problems solved by technology

[0002] At present, the body static stiffness detection system is limited to the car body, and the static stiffness value of the bus body still needs to be analyzed by computer. Body related vehicle performance issues

Method used

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  • Method for detecting static rigidity of light passenger car body
  • Method for detecting static rigidity of light passenger car body
  • Method for detecting static rigidity of light passenger car body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Torsional stiffness:

[0017] The diagram of torsional stiffness is shown in figure 1 , the test bench is composed of a body, a bending stiffness table, a body support, a transverse fixed rod, a displacement sensor, and a force sensor. Constraint method of the front axle of the body: constrain the displacement of the front axle in the z direction, release the rotation in the directions of x, y, and z. The constraint method of the rear axle of the body: constrain the displacement of the rear axle in the directions of x, y, and z, and release the rotation in the directions of x, y, and z; Realized by spherical hinge. During the test, ensure that the front, rear, left and right sides of the vehicle body longitudinal beams are horizontal. The principle of arrangement of the displacement sensor and force sensor is that the front and rear axles must be arranged at the corresponding longitudinal beams (left and right longitudinal beams). Other measuring points are arranged ac...

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Abstract

The invention relates to a static rigidity detection method, in particular to a method for detecting static rigidity of a light passenger car body, which comprises the following steps: applying a certain torque to the front part of the passenger car body by utilizing a lever, acquiring displacement deformations at two longitudinal beams of the passenger car body, calculating a torsional angle of the passenger body and calculating the slope f a fitting straight line according to the results of opposite torsional angles between a front axle and a rear axle of the passenger car body to obtain the torsional rigidity of the passenger car body; then, applying a certain bending moment to the middle part of the passenger car body by utilizing the lever or a weight, acquiring displacement deformations at the two longitudinal beams of the passenger car body, calculating the bending rigidity of the passenger car body according to maximal applying force and maximal deformation; finally, describing a torsional and bending curve by utilizing the data of the torsional and bending displacement deformations of the passenger car body and judging whether the partial performance of the passenger car body is proper according to the curve. The invention not only can obtain the static rigidity value of the passenger car body, but also can validate the accuracy of CAE analysis results and detect the result accuracy, thereby having higher reliability.

Description

technical field [0001] The invention relates to a method for detecting the static stiffness, in particular to a method for detecting the static stiffness of a light passenger car body. Background technique [0002] At present, the body static stiffness detection system is limited to the car body, and the static stiffness value of the bus body still needs to be analyzed by computer. Vehicle performance issues related to bodywork. Contents of the invention [0003] The technical problem to be solved by the present invention is: aiming at the shortcomings of the above prior art, a method for detecting the static stiffness of the light passenger car body is proposed, which can not only obtain the static stiffness value of the vehicle body, but also verify the accuracy of the CAE analysis results, and the detection results are accurate high degree of reliability and credibility. [0004] The technical scheme that the present invention solves above technical problem is: [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M5/00G01N3/20G01N3/22
Inventor 席桂东邬耀明戴云齐丽婷黄杰燕王亮吴宁生熊毅张敏
Owner NANJING AUTOMOBILE GROUP CORP
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