Four different composite mixtures with varying amounts of expanded vermiculite were exposed to high temperatures of 300, 600, 900 and 1100uC for 6 h. Physical and mechanical properties including unit weight, porosity, water absorption, residual compressive strength, residual splitting tensile strength and also ultrasonic pulse velocity were determined after air cooling. Microstructures were inv...

Two new L2 least-squares (LS) finite element methods are developed for the velocitypressure -vorticity first-order system of the Stokes problem with Dirichlet velocity boundary condition. A key feature about these new methods is that a local or almost local L2 projector is applied to the residual of the momentum equation. Such L2 projection is always defined onto the linear finite element space...

This work performs the analysis and simulation investigations of penetration behaviors of chisel-shape projectile. In analysis, the projectile is assumed to be a rigid body and the target plate is elastic-plastic material. By introducing the velocity potential function, the velocity field in target is first obtained. Then, the momentum equation is solved for determining the pressure and stress ...

The formulation of the tensor virial equations is generalized to unrelaxed configurations, where virial equilibrium does not coincide with dynamical (or hydrostatic) equilibrium. Special classes of homeoidally striated ellipsoids are shown to exhibit similar properties as Jacobi ellipsoids, and reduce to Jacobi ellipsoids in the limiting situation of homogeneous matter distribution, rigid rotat...

The first portion of this paper contains an overview of recent progress in the development of dynamical-systems-based methods for the computation of Lagrangian transport processes in physical oceanography. We review the considerable progress made in the computation and interpretation of key material features such as eddy boundaries, and stable and unstable manifolds (or their finite-time approx...

Adolescent idiopathic scoliosis (A.I.S.) is a three dimensional deformity of the spine defined as a series of vertebral segments placed in extension, which deflect and axially rotate towards the same side. It represents the combination of torsional regions joined by junctional zones. Established biological risk factors of A.I.S. are growth velocity and potential residual spinal growth assessed ...