Guang Zhou Shi Sheng Te CO.

Guangzhou, China

Guang Zhou Shi Sheng Te CO.

Guangzhou, China

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Shi W.,Ningbo Polytechnic | Jiang G.,Guangzhou University | Chunhang Z.,Guang Zhou Shi Sheng Te Co. | Rujun W.,Guang Zhou Shi Sheng Te Co.
Research Journal of Applied Sciences, Engineering and Technology | Year: 2013

The process of concrete under symmetric impact was experimentally investigated in the case of primary gas gun and was analyzed with Lagrange method. The value-time relations of u, v, e on every lagrange position are gained. The relationship of strain-stress is also obtained. The whole process is numerical simulated by LSDYNA970. It indicate that the damage effect of concrete under impact loading can be described by the function with plasticity strain at constant volume, equivalence plasticity strain and pressure. The manganin pressure gauge is used to measure the pressure-time curves of the samples. The parameters of high-pressure equation are obtained by the numerical simulation. Numerical simulation is a necessary complement to the test. The spall phenomenon is observed by the numerical simulation. © Maxwell Scientific Organization, 2013.


Jiang G.-P.,Guangzhou University | Hao H.,Guangzhou University | Zeng C.-H.,Guang Zhou Shi Sheng Te CO. | Hao Y.-F.,Guangzhou University | And 2 more authors.
Wuli Xuebao/Acta Physica Sinica | Year: 2013

When testing impact dynamics of concrete, usually a variety of kinetic effects can be seen, such as the axial and lateral inertial confinement effects, the effects of stress wave propagation and the final friction effects, etc. Some of these are the material is nature itself such as the size effect, some are experimental errors, etc., but all the dynamic effects, may enter the final test results so that unnecessary errors or even wrong values may be brought into experiments. Due to the mechanism of friction effect, we have designed three different sizes of specimen for SHPB test. The quantitative values of the friction effect are obtained. The DIF is corrected, which is the basis for concrete impact engineering design. © 2013 Chinese Physical Society.


Ying Z.,Guangzhou University | Chunhang Z.,Guang Zhou Shi Sheng Te Co. | Rujun W.,Guang Zhou Shi Sheng Te Co. | Xi C.,Guang Zhou Shi Sheng Te Co. | Jiang G.,Guang Zhou Shi Sheng Te Co.
Research Journal of Applied Sciences, Engineering and Technology | Year: 2013

The dynamic performance of polypropylene fiber reinforced concrete is studied with the SHPB experiment. The relationship of the strain-stress curves are all obtained in the experiment. The crack characteristics of polypropylene reinforced concrete and plain concrete are also investigated. Analyzed the relation between the character on the crack surface of concrete and material properties and the impact pressure. Also the multi-fractal characteristics are given on the crack surface of concrete. The crack distributions of plain concrete and polypropylene concrete are investigated. The crack resistance effects of polypropylene fiber are analyzed from the degree of closeness and uniformity. © Maxwell Scientific Organization, 2013.

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