Analysis of Poisson's ratio for a micropolar elastic rectangular plate using the finite element method

Based on Eringen's micropolar elasticity theory (MET), a two-dimensional finite element formulation including one extra degree of freedom is derived by using a linear triangular element, and a corresponding computer program is also developed. By varying the technical constants such as micropolar Young's modulus E-m, micropolar Poisson's ratio v(m), characteristic length l, coupling factor N, and micropolar elastic constants in accordance with the micropolar elastic restrictions, their effects on the Poisson's ratio of the rectangular plate are studied in detail.