Drop hammer impact testbed capable of accurately measuring impact load and dynamic displacement and testing method of drop hammer impact testbed

Abstract

The invention relates to a drop hammer impact testbed capable of accurately measuring an impact load and dynamic displacement and a testing method of the drop hammer impact testbed. The drop hammer impact testbed capable of accurately measuring the impact load and dynamic displacement mainly comprises a main frame module, a lifting module, a forcing module, a hammer grabbing module, a hammer headmodule, a test piece fixing seat, a magnetic railing ruler, a dynamic force sensor, a data collection and processing module and the like. The magnetic railing ruler installed on the side surface of the hammer head can accurately measure displacement of the hammer head, while the dynamic force sensor which is installed below the test piece fixing seat can accurately measure the impact force appliedto an object to be measured. The drop hammer impact testbed is simple in structure and convenient to operate, can rapidly and reliably capture a force-displacement signal of the whole impact process,can accurately calculate the impact energy absorbed by the object to be measured and is beneficial to analyzing and studying the anti-impact performance of a material.

Description

Technical field: [0001] The invention relates to a dropping weight impact test bench and a test method capable of accurately measuring impact load and dynamic displacement. Background technique: [0002] The impact test bench is used to simulate the ability of the product to withstand impact damage during actual use in the laboratory before the product is put into production, and to evaluate the impact resistance of the product, and to optimize the structure and strength of the product through the impact loading test data. [0003] Impact test rigs in the prior art mainly include three categories: free-fall impact test rigs, pendulum impact test rigs, and Hopkinson pressure bar test rigs. The principle of the free-fall impact test bench is simple. During the impact test, the specimen is rigidly connected to the moving table, and the gravity makes the moving table freely fall along the guiding mechanism and hit the static table, so that the moving table and the sample generat...

AI Technical Summary

Problems solved by technology

[0004] Although the impact test rigs in the prior art can perform impact tests on specimens, they all have the disadvantage that the impact load on the specimens and the dynamic deformation of the specimens under the impact cannot be obtained directly and accurately.

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