Abstract We consider the torsional rigidity and principal eigenvalue related to p -Laplace operator. The goal is find upper lower bounds products of suitable powers quantities above in various classes domains. limit cases $$p=1$$ p = 1 $$p=\infty $$ <mm...

This paper deals with the Saint-Venant’s torsion of thin-walled isotropic nonhomogeneous open elliptical cross section whose shear modulus depends on one curvilinear coordinates which define cross-sectional area beam. The approximate solution problem is obtained by variational method. usual simplification assumptions are used to solve uniform bars cross-sections. An example illustrates applicat...

Abstract This paper deals with the Saint-Venant torsion of elastic, cylindrically orthotropic bar whose cross section is a sector circular ring shaped bar. The homogeneous elastic wedge-shaped strengthened by on its curved boundary surfaces thin isotropic shells. An analytical method presented to obtain Prandtl’s stress function, torsional rigidity and shearing stresses. A numerical example ill...

The role of the rigidity of a peptide chain in its equilibrium dynamics is investigated within the framework of a microscopic model. The stacking interaction characterizing the chain rigidity is found to be repulsive for both types of protein secondary structure (α-helix and anti-parallel β-sheet) mainly encountered in natural proteins. A discrete breather (DB) or else intrinsic localized oscil...

This study aims to investigate seismic behavior of lead-core rubber elastomeric bearing (LRB) and curved surface friction pendulum slider (FPS) base isolated models considering torsional irregularity for typical reinforced concrete buildings. Nonlinear structural members was considered in analysis models. Total 1408 different nonlinear time history analyses 3-dimensional 3, 5, 7 9-story were pe...

The advancement of automotive technology is rapid in this era, as evidenced by the existence autopilot vehicles that have been developed a scientist. This progress balanced with knowledge continues to develop world education. Many prestigious competitions are held be venue for student creativity and research developing technology, one which Formula Student SAE. background study an engineered el...

In this paper, the solution of an isotropic hollow cylinder, with an isotropic coating, weakened by multiple radial cracks is studied. The hollow cylinder and its coating are under Saint-Venant torsional loading. The series solution is then derived for displacement and stress fields in the cross section of the cylinder containing a Volterra-type screw dislocation. The dislocation solution is em...

Nepal is situated in an area with considerable seismic activity. It important to choose structural systems that can withstand the lateral loads. In a dual system of reinforced concrete structures, placement shear walls optimally increases stiffness buildings. The rigidity RC buildings may be improved by strategically placing lift core walls. Buildings would more useful if they had easy access e...

Abstract With the increasing requirements for lightweight of cannon, it is necessary to design corresponding structure according specific load-bearing form cannon ensure that purpose weight reduction can be achieved on premise meeting a certain rigidity. In this paper, bracket, its structural simplified as disk and double arms, four characteristic variables thickness, inclined length, straight ...

The structure of an S2O mixed-donor macrocycle incorporating para-substituted xylyl subunit was characterized by a single crystal X-ray analysis. The crystal structure shows an exo-dentate orientation of sulfur and oxygen donor atoms due to the fully stretched aliphatic ring conformation. Thus all of torsional angles between donor atoms are arranged anti and S...S distance in a ring is 6.764(1)...