Modified torsion coefficients for a 3-D brick Cosserat point element

Developing a 3 D finite element model for reinforced concrete

Giroux Torsion and Twisted Coefficients

We explain the effect of applying a full Lutz twist along a pre-Lagrangian torus in a contact 3-manifold, on the contact invariant in Heegaard Floer homology with twisted coefficients. Let (M, ξ) be a contact 3-manifold and T ⊂ M be a pre-Lagrangian torus, i.e., an embedded torus whose characteristic foliation ξL = ξ∩TL is linear. By slightly perturbing T , we may assume that it is linearly fol...

Thread Pitch Variant in Orthodontic Mini-screws: A 3-D Finite Element Analysis

Orthodontic miniscrews are widely used as temporary anchorage devices to facilitate orthodontic movements. Miniscrew loosening is a common problem, which usually occurs during the first two weeks of treatment. Macrodesign can affect the stability of a miniscrew by changing its diameter, length, thread pitch, thread shape, tapering angle and so on. In this study, a 3-D finite element analysis wa...

Relativistic particles with rigidity and torsion in D = 3 spacetimes

Models describing relativistic particles, where Lagrangian densities depend linearly on both the curvature and the torsion of the trajectories, are revisited in D = 3 Lorentzian spacetimes with constant curvature. The moduli spaces of trajectories are completely and explicitly determined. Trajectories are Lancret curves including ordinary helices. To get the geometric integration of the solutio...

Electric field in 3 D gravity with torsion

It is shown that in static and spherically symmetric configurations of the system of Maxwell field coupled to 3D gravity with torsion, at least one of the Maxwell field components has to vanish. Restricting our attention to the electric sector of the theory, we find an interesting exact solution, corresponding to the azimuthal electric field. Its geometric structure is to a large extent influen...