Bumper skin rigidity measuring method and measuring equipment based on bumper skin rigidity measuring method

Abstract

The invention discloses a bumper skin rigidity measuring method and measuring equipment based on the measuring method. The measuring method comprises the following steps: S1, applying impact energy W with known magnitude to a bumper skin; S2, calculating the absorption energy E of the bumper skin, wherein the absorption energy E is energy absorbed by the bumper skin from the impact energy W; S3, measuring the maximum impact force Nmax borne by the bumper skin under the action of the impact energy W; and S4, calculating the deformation X of the bumper skin by using a formula E = 0.5* Nmax* X. According to the invention, the measuring method is convenient to implement; the measuring equipment based on the measuring method does not need to be provided with a dial gauge system, so that a series of problems that a distance exists between a measuring point of the dial gauge system and a deformation center, a clamp needs to be used for fixing during measurement, and the equipment is not portable due to split are solved; and the measuring equipment has the advantages of being accurate in measuring result, convenient to use, portable and the like.

Description

Technical field [0001] The present invention relates to the field of firing bar, and more particularly to a measurement method of fracture stiffness and a measurement device based on the measurement method. Background technique [0002] Bumper fierce rigidity has a large influence on pedestrians, and the user perceived quality is large. As shown, the current bumper fierce rigidity measuring equipment includes head 04, force meter 03, percentage 01 and support 02, The percent watch is fixedly connected to the support, which constitutes a percentage system, the head and the dynamometer fixed connection, constitute the head system, and the two systems are independent of each other. [0003] At the beginning of the measurement, the percentage system is fixed to the bumper fixture, and then the percent watch is in contact with the bumper and fixed, and the reading 1 is read from the percent watch. Then, the handheld head system applies a designated pressure on the fierce slide, and th...

AI Technical Summary

Problems solved by technology

[0006] 1. The contact position between the dial indicator and the bumper skin and the position where the pressure is applied cannot coincide, resulting in a distance between the dial indicator measuring point and the deformation center, so the measured deformation error is relatively large

[0007] 2. The dial indicator system must be relatively fixed to the bumper skin, usually fixed on the bumper skin fixture, which makes it impossible to use this measurement method on the actual vehicle or during the benchmarking process

[0008] 3. Since the dial indicator system and the indenter system are independent of each other, it is inconvenient to carry

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