This paper presents a new discretization scheme for linear elasticity models using only one degree of freedom per face corresponding to the normal component of the displacement. The scheme is based on a piecewise constant gradient construction and a discrete variational formulation for the displacement field. The tangential components of the displacement field are eliminated using a second orde...

In this paper, a plane quadrilateral element with rotational degrees of freedom is developed. Present formulation is based on a hybrid functional with independent boundary displacement and internal optimum strain field. All the optimality constraints, including being rotational invariant, omitting the parasitic shear error and satisfying Fliepa’s pure bending test, are considered. Moreover, the...

This paper introduces a new algorithm to estimate a robot’s planar displacement by weighted matching of dense twodimensional range scans. Based on models of expected sensor uncertainty, our algorithm weights the contribution of each scan point to the overall matching error according to its uncertainty. A general maximum likelihood formulation is used to optimally estimate the displacement betwe...

in this paper the nonlinear bending analysis of thick functionally graded plates subjected to mechanical loading is studied. the formulation is derived based on the third-order shear deformation plate theory and von kármán type non-linearity. young’s modulus is assumed to vary according to a power law distribution in terms of the volume fractions of the constituents. the principle of virtual wo...

This paper introduces a “weighted” matching algorithm to estimate a robot’s planar displacement by matching dense twodimensional range scans. Based on models of expected sensor uncertainty, our algorithm weights the contribution of each scan point to the overall matching error according to its uncertainty. A general maximum likelihood formulation is used to optimally estimate the displacement b...

A vision sensor-based 6-DOF displacement evaluation method incorporating a genetic algorithm was proposed to monitor the critical defects of port infrastructure, such as deflection, slope, and slip. The behavior structure, including subsidence, estimated based on specification target fixed structures nearby. calculates relative position structure measures movement over time. To improve measurem...

The aim of this work is to propose a new multiphysics mode synthesis (MMS) for the thermomechanical vibration problem. present model based on state-space formulation, which consists displacement, velocity, and temperature shift. formulation symmetric unlike conventional non-symmetric displacement In proposed MMS, structural variables, are first reduced, then applied coupling term in thermal par...