Three popular shear tests—the 10° off-axis, the ±45° tensile and the Iosipescu specimen tested in the modified Wyoming fixture—for shear modulus measurement are evaluated for a graphite-epoxy composite material system. A comparison of the shear stress-strain response for each test method ...
Energy principles are used in seeking the upper and lower bound solutions for the shear modulus. Computer graphic results are provided. This new approach represents a compoetent solution for seeking a more efficient structural design where the strength-to-density ratio is of major concern....
shear modulus/ effective shear modulusporous elastic materialsuniaxial tension testequivalent circular inhomogeneityaluminum plateA new approach is proposed for the experimental study of the effective shear modulus of porous elastic materials using the uniaxial tension test. The idea is to measure strains ...
Shear modulus, in materials science, is defined as the ratio of shear stress to shear strain. The shear modulus value is always a positive number and is expressed as an amount of force per unit area. Shear modulus' derived SI unit is the pascal (Pa), although it is usually expressed in...
A new and simple method is presented to determine the independent shear modulus of transversely isotropic material. Mathematical formulation, derivation and solution are given, and test apparatus and results are presented. The method was tested on one of such materials—Green River Formation oil shale...
Based on the generalized Hooke''s law, the generalized plane stress condition and the complex variable method, a dimensionless analysis is used to evaluate the influence of various elastic moduli E1, E2, G12 and 12 on the laminate shear modulus and the stress distribution along the boundary of...
Common sense and the 2nd Law of Thermodynamics require that a positive shear stress leads to a positive shear strain. Therefore, the shear modulus G is required to be nonnegative for all materials, G > 0 Since both G and the elastic modulus E are required to be positive, the quantity ...
These materials are, of course, fully rigid and do exhibit a large value of shear modulus, provided that they have a sufficient atomic coordination, well above the isostatic limit, and a fairly large value of spring constants. Theory of elastic moduli. Upon carrying out the formal ...
Continuum Physics of Materials with Time-Dependent Properties Advances in Applied Mechanics Book series2015, Advances in Applied Mechanics Mokarram Hossain, Paul Steinmann Explore book 4.6.1 Shear and Bulk Moduli For the shear modulus evolution, x0 and x∞ in Eq. (224) are replaced by initial an...
Where μ is the shear modulus of the unstressed rock (with an isotropic distribution of cracks), Pc is a characteristic crack closing pressure, σ0 is normal stress, and B=BN/BT is the ratio of normal to tangential compliances of individual cracks. ...