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Drop hammer impact test device used for simulating vehicle collision

A drop weight impact test and vehicle simulation technology, which is applied in the field of vehicle collision testing, can solve problems such as inability to effectively simulate vehicle collision loads, and achieve the effects of safe and reliable test process, improved test accuracy, and high test accuracy

Inactive Publication Date: 2015-09-16
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a new type of drop weight impact test device for simulating vehicle collision, which can realize the crash of the vehicle during the collision Shrinkage deformation and effective simulation of the real stress state of specimens and materials

Method used

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  • Drop hammer impact test device used for simulating vehicle collision
  • Drop hammer impact test device used for simulating vehicle collision
  • Drop hammer impact test device used for simulating vehicle collision

Examples

Experimental program
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Embodiment

[0033] see figure 1 with figure 2 , a drop weight impact test device for simulating a vehicle collision, comprising a guide rail frame 1, a drop weight 2, a counterweight platform 3, and a support restraint device 4, the drop weight 2 is connected to a lifting mechanism, and is lifted by the guide rail frame 1, referring to image 3 , the inner side of the guide rail frame is provided with a vertical hammerhead guide rail 10, the two ends of the concrete test column 5 are supported on the test platform 3 through the support restraint device 4, and the middle section of the test column 5 is erected directly below the drop hammer 2 , by dropping the hammer 2 along the hammer head guide rail 10 to do a free fall and collide with the middle of the test column 5 for the test.

[0034] For details, see Figure 4 with Figure 5 , the drop hammer 2 can simulate the process of vehicle collision collapse, including a collapsible hammer head 20 and a counterweight platform 23, wherei...

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Abstract

The invention discloses a drop hammer impact test device used for simulating vehicle collision. The device comprises a drop hammer which can simulate vehicle crush. The drop hammer comprises a crushable hammerhead and a counterweight cap. The crushable hammer is used for impacting a test piece and transferring the impact force. A clump weight is arranged on the counterweight cap. The crushable hammerhead and the counterweight cap are coaxially assembled through a sliding structure. A crushable spring is arranged between the crushable hammerhead and the counterweight cap. The end part of the crushable spring is connected with the crushable hammerhead or the counterweight cap through a force sensor. Both ends of an impact simulation test column are respectively constrained and fixed on a test cap according a boundary condition. The whole drop hammer is lifted by a lifting mechanism, and free-fall impact loading is carried out on a part to be impacted on the test column. According to the invention, drop hammer test loading is used for simulating vehicle collision; the drop hammer impact test device has the advantages of real stress simulation, high test precision and being safe and reliable; the cost is far less than the cost of a conventional real vehicle collision test; and the drop hammer impact test device can be promoted in the fields of structure test and vehicle production and development.

Description

technical field [0001] The invention belongs to the technical field of vehicle collision testing, and in particular relates to a drop weight impact test device for simulating vehicle collision on a test piece. Background technique [0002] During the service process, engineering structures will inevitably suffer from various possible accidental impact loads, such as vehicle collisions. Underground garages, multi-storey parking lots, and load-bearing columns on the ground floor of street-facing buildings with heavy traffic flow are vulnerable to vehicle impacts (accidental collisions or malicious collisions), and incidents of vehicle impacts on urban overpasses and expressway flyover bridge piers are frequently reported . These loads need to be considered in some important and special structural design. In the study of the dynamic mechanical properties of structural components against vehicle impact, the real vehicle crash test is expensive and the information obtained is l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/08
Inventor 孟一
Owner CENT SOUTH UNIV
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