Study on SHPB Techniques of Constant Strain Rate Loading
[1]Liang Shufeng,Wu Yu,Liu Dianshu,et al.Study on SHPB Techniques of Constant Strain Rate Loading[J].Journal of Zhengzhou University (Engineering Science),2018,39(02):50-55.[doi:10.13705/j.issn.1671-6833.2018.02.013]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
39
Number of periods:
2018 02
Page number:
50-55
Column:
Public date:
2018-03-30
- Title:
- Study on SHPB Techniques of Constant Strain Rate Loading
- CLC:
- -
- Abstract:
- Constant strain rate loading could effectively solve the stress uniformity and the dispersion effect of the SHPB device in the application of rock-like materials based on a comprehensive analysis of the testing technology on the SHPB data processing principle and the conditions which SHPB device applied in the rock material. It was determined that conical-cylindric bullet was an effective way to realize constant strain rate loading. An analysis of different shape parameters was made by means of numerical calculation for the total length of 400mm conical-cylindric bullet, it was seemed that the optimal area ratio between small end-face and large end-face was 0.7, and the specimen length-diameter ratio of granite was between 0.75 and 0.82. The optimal cone length is 300mm. By comparing the waveform with traditional cylindrical bullets, it was proved that the designed conical-cylindric bullet could achieve the constant strain-rate loading of granite was verified from two aspects of numerical simulation and experiments.
- References:
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Last Update:
2018-04-02