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Experiment system and method for simulating collision between automobile and parapet

A technology for simulating experiments and guardrails, which is applied in the system field of collision simulation experiments between cars and guardrails, can solve problems such as difficulty in experimental simulation, and achieve the effects of convenient operation and low cost.

Inactive Publication Date: 2006-02-08
INST OF MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

However, these devices are difficult to be applied to the experimental simulation of collision processes such as car collisions

Method used

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  • Experiment system and method for simulating collision between automobile and parapet
  • Experiment system and method for simulating collision between automobile and parapet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] As shown in Figure 1, an example of a system and simulation test method for the collision simulation experiment between a car and a guardrail is built. The example is a weight drop stroke H=2.5m, and the maximum acceleration length of the model car is L=4×H = 10m, the drop weight M can be adjusted within the range of 0-2t, the theoretical speed of the model car is determined by the following formula:

[0018] v 2 =32gH / (1+16a)

[0019] Among them, g is the acceleration due to gravity, a=m / M, and m is the total mass of the model car. The experimental site and the model car adopt a scale model with a ratio of 1:5 to the real object. According to the model car of a small vehicle with a model rate of 2t, the weight of the model car should be 16kg, so that the maximum speed of the model car can reach 26m / s, which is equivalent to the actual speed of about 58m / s, which is about 209km / h.

[0020] A conventional winch 5 links to each other with the conventional decoupling me...

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Abstract

The present invention relates to an experiment system and a method for simulating collision between automobile and parapet. The system includes hoist connected via elevating mechanism to the tail unhooking mechanism of model automobile; model automobile with head hook connected to drawing steel cable, which is parallel to the pressure guide steel cable with ends fixed in two ends of the guide slot and has the other end connected to weight drop hammer via pulley block; guide rack to guide the model automobile; guide rack stopping block in the unhooking position of the model automobile; high speed camera installed in the camera tower; and acceleration measurer in the model automobile. When the drop hammer falls to sand surface, the stopping block makes the drawing hook in the guide mechanism separate from the model automobile.

Description

technical field [0001] The invention relates to a method for carrying out a structure collision experiment, in particular to a system and a simulation experiment method for a collision simulation experiment between a car and a guardrail. Background technique [0002] It is an important link in the process of developing new guardrails to carry out experimental simulations of safety facilities such as highway guardrail structures by using simulation experiment facilities. Using reduced-scale experimental simulation can save development costs, and at the same time, more accurate measurements can be made for the influence of different parameters. Of course, to make the results of the model experiment applicable to the actual situation, it is necessary to satisfy a certain similarity between the model and experimental parameters and the actual situation. [0003] There are two commonly used gravity-driven impact test facilities, both of which are wide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M7/08G01M17/007B60K31/00E01F15/02
Inventor 丁桦黄婉莉
Owner INST OF MECHANICS CHINESE ACAD OF SCI
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