Test method and device for detecting bending stiffness and energy absorption characteristics of auto parts

Abstract

The invention relates to a test method for detecting flexural rigidity and energy absorbing properties of automotive parts and a test device for detecting flexural rigidity and energy absorbing properties of the automotive parts. The test device comprises a hammerhead device on an upper end of the test device, a B-column clamp device and a guide rail device on a bottom of the test device, wherein the hammerhead device comprises a hammerhead guide rail (2), a T-shaped groove (2-1) of the hammerhead guide rail, first bolts (4), upper fixing nuts (3), lower fixing nuts (5), a hammerhead (6) and a force sensor (14); the B-column clamp device comprises a bracket (9), a connecting column (8), and a location pin (7); the guide rail device comprises a ground guide rail (10), a ground guide rail groove (10-1), fastening nuts (11), and second bolts (12); the B-column four-point bending quasi-static test device can be freely and easily installed on a pressure machine. The B-column clamp part of the test device can be adjusted according to the shape and dimension of the B column, thus the test device is high in flexibility and freely moved on the guide rail according to the spatial position of the B column.

Description

technical field [0001] The invention relates to a test method and device for detecting the bending rigidity and energy absorption characteristics of automobile parts, in particular to a four-point bending quasi-static crush test method and device for detecting the bending rigidity of a B-pillar of an automobile. Background technique [0002] In the process of a side collision of a car, the main parts of the human body that are seriously injured or even fatal are the chest, abdomen and pelvis, so the damage values ​​of the chest, abdomen and pelvis of the dummy are mostly used in the vehicle crash test stipulated in the side collision regulations and standards Make an evaluation. As the main load-bearing and energy-absorbing parts of the side wall structure, the main function of the B-pillar located between the front door and the rear door is to resist the intrusion of impact objects and protect the living space of the occupants. In relation to the side crashworthiness of th...

AI Technical Summary

Problems solved by technology

However, the traditional four-point bending test device has a single working condition, the relative position of the hammer head and the press cannot be changed, and the contact position with the specimen during crushing is fixed, and the position of crushing and the number of crushing points cannot be adjusted freely.

A static and dynamic four-point bending experimental device as described in patent 201310628794.1, which cannot freely adjust the position and number of crush points

Another example is the four-point bending test fixture in patent 201310629409.5, which cannot freely change the position and number of pressure rollers, and can only move at a fixed position

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