نتایج جستجو برای: displacement based formulation

تعداد نتایج: 3049227  

2004
Binoj Ramesh Antoinette M. Maniatty

This paper presents a stabilized finite element formulation for nearly incompressible finite deformations in hyperelastic–plastic solids, such as metals. An updated Lagrangian finite element formulation is developed where mesh dependent terms are added to enhance the stability of the mixed finite element formulation. This formulation circumvents the restriction on the displacement and pressure ...

Journal: :Computational Geosciences 2021

We develop non-overlapping domain decomposition methods for the Biot system of poroelasticity in a mixed form. The solid deformation is modeled with three-field formulation weak stress symmetry. fluid flow Darcy formulation. introduce displacement and pressure Lagrange multipliers on subdomain interfaces to impose weakly continuity normal velocity, respectively. global problem reduced an interf...

2003
César Mendoza Christian Laugier

This paper presents a methodology to simulate cuts in deformable objects. It proposes a simple physical model of cutting in combination with a large displacement (Green) strain tensor formulation. Explicit finite elements are used to allow real-time simulations and fast topology updates during cutting procedures. Force feedback is added to increase realism.

Journal: :Taiwanese Journal of Mathematics 2023

We investigate the behavior of approximate solution Biot's consolidation model using a weighted least-squares (WLS) finite element method. The describes fluid flow in deformable porous medium, with variables for pressure, velocity, and displacement. WLS functional is defined based on stress-displacement formulation, symmetry condition stress weight that depends time step size temporal discretiz...

2003
Ahsan Kareem Yin Zhou

Wind loads on structures under the buffeting action of wind gusts have traditionally been treated by the ‘‘gust loading factor’’ (GLF) method in most major codes and standards around the world. In this scheme, the equivalent-static wind loading used for design is equal to the mean wind force multiplied by the GLF. Although the traditional GLF method ensures an accurate estimation of the displac...

2006
Reinhard Piltner

In this paper the possibility of applying the Trefftz-method to thick and thin shells is discussed. A mixed variational formulation is used in which the assumed strain and stress functions are derived from the three-dimensional solution representation for the displacement field. For the construction of the linearly independent Trefftz trial functions both the Neuber/Papkovich solution represent...

H. E Khiouani, L Belounar M Nabil Houhou

In this research paper, the formulation of a new three-dimensional sector element based on the strain approach is presented for plate bending problems and linear static analysis of circular structures. The proposed element has the three essential external degrees of freedom (Ur, Vθ and W) at each of the eight corner nodes. The displaceme...

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