A methodology for estimating the force distribution that occurs along a needle shaft during insertion is described. An experimental system for measuring planar tissue phantom deformation during needle insertions has been developed and is presented. A two dimensional linear elastostatic material model, discretised using the Finite Element Method, is used to derive contact force information that ...

Fast hierarchical methods for potential eld evaluations have in recent years found interesting applications in computational physics and engineering. For example, these methods have been used in combination with integral equation methods for solving the electrostatic and elastostatic equations for materials with inclusions. A lingering obstacle on the way to constructing a general purpose algor...

Phobos is one of the two moons Mars, only other terrestrial planet to have companions. In spite certain common orbital characteristics between Earth’s Moon and Phobos, such as almost circular, low-inclination, synchronous orbits, origin Martian remains be understood. This unsettled state affairs reflects a scarcity data pertinent its interior structure bulk composition, both which hold key solv...

Abstract Dynamic earthquake sequence simulation is an important tool for investigating the behavior of a fault that hosts series earthquakes because it solves all interrelated stages in cycle consistently, including nucleation, propagation and arrest dynamic rupture, afterslip, locking, interseismic stress accumulation. Numerically simulating resolving these phenomena, which have different time...

A new meshless Local Boundary Integral Equation (LBIE) method for solving two-dimensional elastostatic problems is proposed. Randomly distributed points without any connectivity requirement cover the analyzed domain and Local Radial Basis Functions (LRBFs) are employed for the meshless interpolation of displacements. For each point a circular support domain is centered and a local integral repr...