Data processing system based on separated Hopkinson bar dynamical mechanical property test device

Abstract

The invention discloses a data processing system based on a separated Hopkinson bar dynamical mechanical property test device. The data processing system is characterized in that voltage-time data points obtained by testing the separated Hopkinson bar dynamical mechanical property are first read, then the voltage-time data points are drawn into a voltage-time curve, the tested voltage-time curve is transformed to a needed engineering stress-strain curve and a real stress-strain curve through the human-computer interaction according to a given test parameter or by automatically inputting the parameter and a calculation formula, and the data can be examined, smoothened, modified, intercepted and outputted at any time. By adopting the data processing system, the dynamically compressed test data, the cutting data and the tensile mechanical property test data can be respectively processed; based on the humanized interface of the windows operating system, the intelligentization of the separated Hopkinson bar dynamical mechanical property data processing can be realized, the data is more flexible to process, the operation rate and convenience in operation can be improved, and the practicability is strong.

Description

technical field [0001] The invention relates to the field of dynamic mechanical testing of materials, in particular to a data processing system based on a separate Hopkinson dynamic mechanical testing device. Background technique [0002] Strain rate is a measure of the rate at which a material deforms and is the derivative of strain with respect to time. When the strain rate exceeds 10 -2 the s -1 When the material deforms, the mechanical behavior it exhibits is called the dynamic mechanical behavior of the material. Materials often have high strain rates (10 2 the s -1 -10 4 the s -1 ) and even ultrahigh strain rates (10 4 the s -1 -10 6 the s -1 ) deformation. At this time, the failure mode of the material is different from the static load condition, and the strength and plasticity of many materials will change with the change of the strain rate. Therefore, the research on the dynamic mechanical properties of materials is of great significance. [0003] Curre...

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Problems solved by technology

At the same time, the collected voltage-time curve and the curve during processing are prone to abnormal points, and the fluctuation of the overall curve is relatively large, so the curve needs to be modified and the overall smoothing process

[0015] Due to the complexity of data processing and high professional requirements, at present, there is no data processing system that can completely solve the above problems

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