The present research focuses on the use of a meshless method for solution nanoplates by considering strain gradient thin plate theory. Unlike most common finite element method, methods do not rely domain decomposition. In approach approximating functions at collocation nodes are obtained using radial basis which depend shape parameters. selection such parameters can strongly influences accuracy...

In order to calculate the flexural strength of normal-strength concrete (NSC) beams, the nonlinear actual concrete stress distribution within the compression zone is normally replaced by an equivalent rectangular stress block, with two coefficients of α and β to regulate the intensity and depth of the equivalent stress respectively. For NSC beams design, α and β are usually assumed constant as ...

A variational basis is presented to link ne-scale theories of material behaviour with the classical, macromechanical continuum theory. The approach is based on the weak form of the linear momentum balance equations, and a separation of the weighting function and displacement elds into coarse and ne-scale components. Coarse and ne-scale weak forms are de ned. The latter is used to introduce a st...

The color change of opal photonic crystal films (OPCFs) due to deformation was quantitatively evaluated using digital image correlation (DIC) analysis. OPCFs were pasted on specimens three different gauge geometries, and random patterns formed the opposite side each specimen for DIC To assess applicability OPCFs-based strain characterization analyzing steel structural components associated meta...

The construction of regularization operators presented in this work is based on the introduction of strain or damage micromorphic degrees of freedom in addition to the displacement vector and of their gradients into the Helmholtz free energy function of the constitutive material model. The combination of a new balance equation for generalized stresses and of the micromorphic constitutive equati...