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Showing 1 to 14 of 14 for “"Surface Tractions"”.
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Solution of St.-Venant's and Almansi-Michell's Problems
… In the Almansi-Michell problem self equilibrated surface tractions are also applied on the mantle of the body. The St. Venant problem is also analyzed for the following two cases: (i) the reference configuration is subjected to a hydrostatic pressure, and (ii) stress-strain relations contain terms …
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Contributions to the anisotropic elasto-plastic analysis of shells
… models the three-dimensional (3D) effects of surface tractions. The element is the widely used MITC4 shell element enriched by the use of a fully 3D stress-strain description, appropriate through-the-thickness displacements to model surface tractions, and pressure degrees of freedom for …
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Analysis of nonlinear electroelastic continua with electric conduction
… body forces, realized mathematically as electric surface tractions, are retained in the small deformation approximation. A finite element formulation is presented suitable for performance analysis of deformable electromechanical actuator and sensor devices composed of highly insulating materials …
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Cálculo de sensibilidades: uma aplicação do método dos elementos de contorno à otimização de forma
… is differentiated. The sensitivities of the surface tractions and displacements are the new unknowns. They are computed by the solution of a system of linear equations that presents the same coeficient matrix of the original B.E.M. problem. The sensitivities for each design parameter are …
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Análise da torção elastoplástica de sólidos de revolução pelo método dos elementos de contorno
… transverse displacement and the corresponding surface traction. Shear stresses are computed in the appropriate way; boundary stresses are calculated from surface tractions and derivatives of interpolated displacements and stresses at selected internal points are obtained by using the …
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A continuum theory with long-range forces for solids
… In contrast to existing non-local theories, surface tractions are excluded. As consequence, the theory is applicable off and on defects and interfaces: cracks and phase boundaries are a natural part of the body, and do not require special treatment. Furthermore, as the model loses "local …
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A nonlinear interface formulation for frictional contact
… conditions that preserves the weak continuity of surface tractions without introducing dual interface fields. ^ In this study, the Enriched Discontinuous Galerkin Approach (EDGA) is extended to model contact in the presence of material and geometrical nonlinearities, as well as friction. The …
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Large deformation analysis of laminated composite structures by a continuum-based shell element with transverse deformation
… structures. In order to satisfy the plate/shell surface traction boundary conditions and to have accurate stress description while maintaining the low cost of the analysis, a newly assumed displacement field theory is formulated by adding higher-order terms to the transverse displacement …
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Analysis of Static and Dynamic Deformations of Laminated Composite Structures by the Least-Squares Method
… subjected to both quasi-static and transient surface tractions. Convergence of the numerical algorithms with respect to the LGL basis functions in space and time (when applicable) is also considered and explored. In the transient analysis of sandwich beams, we study the sensitivity of the …
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Investigation of Severe Abrasive Truck Tyre Wear
… of tyres subjected to large slip angles. Surface tractions and sliding speeds are calculated. Combining these outputs with a local wear law - which describes the wear rate as a function of surface tractions, sliding speed, contact temperature, surface roughness, etc, - wear of a single …
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A Stabilized Finite Element Formulation of Non-Smooth Contact
… compatibility and a complete transfer of surface tractions between the different components at the connecting interfaces. Contact problems are a special family of interaction problems where the bodies on either side of the interface may separate freely or connect with each other, depending …
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Energy and Thermodynamically Based Approaches for Analysis of Damage in Contact Problems
… is also investigated for the case of rough surface contact. The deterministic approach is employed to investigate the effect of roughness on the surface tractions and contact stresses. A special averaging technique, proposed for the case of smooth surface, is adopted. The predictions of the …
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A study of some fundamental equations for the deformation of a variable thickness plate
… θ₁ and θ₂ being the coordinates of the middle surface and λ=t/L being a constant for a plate of constant thickness t. This paper takes λ = λ(θ₁,θ₂) as a function of θ₁ and θ₂ so that the variable thickness may be taken into account. General tensor notation is used so as to work independent of …
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Finite Coupled Torsion and Inflation of Functionally Graded Mooney-Rivlin Cylinders with and without Residual Stresses
… caused by pressures applied to the bounding surfaces and axial loads or twisting moments on the end faces. We also simulate residual stresses in a hollow cylinder either by inverting it inside out or by closing a longitudinal wedge opening parallel to the cylinder axis through axisymmetric …