The particle flow code (PFC) is an effective method to study the
macromechanics problems of an analytic object (including construction and rock mass) at the microlevel [22-26], which has been widely applied in simulation tests of uniaxial compression, biaxial compression, and triaxial compression for the rock specimen [19, 27-30].
So the reasonable determination of the relationship between the pore size of the coal body and the dynamic movement of overlying rock strata is helpful to build up the transition between the microscopic quantity and
macromechanics parameters.
In this paper, "
macromechanics, mesomechanics, micromechanics, and nanomechanics of materials are the component parts of structural mechanics of materials [1-3]."
Coclear micromechanics and
macromechanics. In: Dallos P, Popper AN, Fay RR, eds.
This engineering textbook explains the mechanical behavior of a single lamina, develops equations for the mechanical properties of a lamina, extends the
macromechanics of a single lamina to a laminate, and walks through methods for analyzing the failure and design of laminated composites.
As shown by the above authors, it is possible to use
macromechanics transformation formulae together with specially orthotropic moduli calculated from micromechanics, and obtain the composite modulus, [E.sub.c].