TY - JOUR

T1 - On the Analysis of Two Theoretical Approaches to Predict the Material Strength under Dynamic Loading

AU - Volkov, G. A.

AU - Petrov, Yu. V.

PY - 2022

Y1 - 2022

N2 - In this paper, we compare two approaches to describing the rate dependence of the strength of materials under conditions of dynamic loading with a constant strain rate. The first is based on a structural model of a brittle continuous medium with defects, which makes it possible to derive a semiempirical normalization relation to describe the rate dependence of the strength of a wide class of materials in a single normalized space. The second is based on the concept of incubation time of destruction, which is a strength parameter that characterizes the sensitivity of a material to the intensity and form of the loading impact. The interrelation and distinctive features of these two approaches are studied, as well as the rate dependences of strength for some materials are compared by modeling.

AB - In this paper, we compare two approaches to describing the rate dependence of the strength of materials under conditions of dynamic loading with a constant strain rate. The first is based on a structural model of a brittle continuous medium with defects, which makes it possible to derive a semiempirical normalization relation to describe the rate dependence of the strength of a wide class of materials in a single normalized space. The second is based on the concept of incubation time of destruction, which is a strength parameter that characterizes the sensitivity of a material to the intensity and form of the loading impact. The interrelation and distinctive features of these two approaches are studied, as well as the rate dependences of strength for some materials are compared by modeling.

U2 - 10.3103/S0025654422080283

DO - 10.3103/S0025654422080283

M3 - статья

VL - 57

SP - 1958

EP - 1963

JO - Mechanics of Solids

JF - Mechanics of Solids

SN - 0025-6544

IS - 8

ER -