Eyring rate process

In the pre-necking region, the yield stress has a positive dependence on elongation speed and a negative dependence on temperature. These empirical characteristics of yielding flow can be expressed by an Eyring rate process. 

In brief, the flow process is described by a three-dimensional formulation of Eyring rate-process kineties, where flow proceeds by shear but the rate of flow is modulated by the hydrostatic conqx>nent of stress beeause of the transition state is expected to be a locally dilated state. Under these conditions the deviatorie bond stretching contribution to the flow stress is a linear function of log strain rate. 

S. Glasstone, K. J. Laidler, and H. Eyring, The Theory of Rate Processes, McGraw-Hill, New York, 1941. 

Giasstone S, Laidier K J and Eyring Fi 1941 The Theory of Rate Processes (New York McGraw-Fiiii)... 

Glasstone, S. Laidler, K.J. Eyring, H. The Theory of Rate Processes McGraw-Hill New York, 1948 pp 472-3. 

According to the theory of rate processes (Eyring et al., 1941), reaction rate constants are determined by the expression... 

Glasstone, S., Laidler, K. J., and Eyring, H. (1941), Theory of Rate Processes, McGraw Hill, New York. Langevin, M. P. (1905), J. Chim. Phys. 5, 245. English translation in McDaniel, E. W. (1964), Collision Phenomena in Ionized Gases, app. 1, Wiley, New York. 

Caldwell, D. and Eyring, H. (1971) Quantum-mechanical rate processes,in Yourgrau, W. and van der Merwe, A.(eds.), Perpectives in quantum theory, Dover Publications,Inc., New York,pp. 117-138. 

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