Engineering Transactions, 36, 4, pp. 611-627, 1988

Tensile Strength of Brittle Materials in High Strain Rate Processes

K.M. Mianowski
Institute of Civil Engineering Technology, Warszawa
Poland

Assuming that high strain rate tensile tests lead to brittle fracture (no slip mechanisms participate in the process), the phenomenon of strength growth in very fast processes is attributed to thermal vibrations of crystal lattice. Formulae are given enabling effective evaluation of strength as a function of duration of the loading process. Results of analysis are compared with experimental data published by Zieliński and concerning the tensile strength of concrete in high rate processes.

Full Text: PDF

References

A. J. ZIELIŃSKI, Fracture of concrete and mortar under uniaxial impact tensile loading, Delft University Press, 1982.

D. L. BIRKIMER, R. LINDEMANN, Dynamic tensile strength of concrete materials, J. ACJ, 47--49, 1971.

K. M. MIANOWSKI, Dynamic aspects in fracture mechanisms, Brittle Matrix Composites 1. Elsevier Applied Science Publishers, London-New York 1986 pp. 81-91.

H. MIHASHI, M. IZUMI, A stochastic theory for concrete fracture, Cement and Concrete Research, 7, 411-422, 1977.

K. M. MIANOWSKI, Dynamic effect in fracture mechanics of brittle materials [in Polish], Arch. Inż. Ląd., 1987.

P. PERZYNA, Thermodynamics of inelastic materials [in Polish], PWN, Warszawa 1978.

A. SEGHER, The temperature dependence of the critical shear stress and of work-hardening of metal crystal, Philosoph. Magazine, 45, 7, 771-773, 1954.

Z. BASIŃSKI, Thermally activated glide in the face-centered subic metals and its application to the theory of strain hardeninq, Philosoph. Magazine, 4, 393--432, 1968.

C. H. WERT, R. M. THOMSON, Physics of solids [Polish translation], PWN, Warszawa 1974.

R. M. EVANS, M. G. MARATHE, Microcracking and stress-strain curves for concrete in tension, Materiaux et Construction, 1, 1, 61-64, 1968.




Copyright © 2014 by Institute of Fundamental Technological Research
Polish Academy of Sciences, Warsaw, Poland