A numerical dynamic-aerodynamic interface for simulating the separation dy­n­a­m­ic­s of co­n­­s­t­r­a­i­ned strap-on boosters jettisoned in the atmosphere is presented. A 6-DOF multi body dynamic solver ،using Constraint For­ce Equation Methodology is coupled with a numerical time dependent Euler flow solver. An automatic dyna­m­i­­c mesh updating proc­e­d­ure is employed using smoothing and l...

We present an improved method for topology optimization with both adaptive mesh refinement and derefinement. Since the total volume fraction in topology optimization is usually modest, after a few initial iterations the domain of computation is largely void. Hence, it is inefficient to have many small elements, in such regions, that contribute significantly to the overall computational cost but...

A desired mesh architecture, based on connected-cycle modules, is constructed. To enhance the reliability, multiple bus sets and spare nodes are dynamically inserted to construct modular blocks. Two reconfiguration schemes are associated, and can eliminate the spare substitution domino effect. Simulations show that both schemes provide for increase in reliability over the interstitial redundanc...

This study analyzes the free vibration, forced vibration, resonance, and stress wave propagation of orthotropic sandwich plates made of functionally graded materials (FGMs). Dynamic analyses are conducted using a mesh-free method based on first-order shear deformation theory and the shape functions constructed using moving least squares approximation. The sandwich plates are rested on a Pastern...

We present a new remeshing scheme based on the idea of improving mesh quality by a series of local modifications of the mesh geometry and connectivity. Our contribution to the family of local modification techniques is an areabased smoothing technique. Area-based smoothing allows the control of both triangle quality and vertex sampling over the mesh, as a function of some criteria, e.g. the mes...

Three-dimensional (3D) wafer stacked implementation (WSI) has been proposed as a promising technology for massively parallel computers. A hierarchical 3D-torus (H3DT) network, which is a 3D-torus network of multiple basic modules in which the basic modules are 3D-mesh networks, has been proposed for efficient 3D-WSI. However, the restricted use of physical links between basic modules in the hig...

Mesh adaption is a powerful tool for eecient unstructured-grid computations but causes load imbalance among processors on a parallel machine. We present a novel method to dynamically balance the processor workloads with a global view. This paper presents, for the rst time, the implementation and integration of all major components within our dynamic load balancing strategy for adaptive grid cal...

In this paper, we propose an efficient design of a heterogeneous mesh router, using network processors. Wireless Mesh Network (WMN) is a multi-hop wireless network, comprising two kinds of nodes-mesh routers and mesh clients. Microsoft Research has developed Mesh Connectivity Layer (MCL) for computers that use Windows operating systems. In MCL routing is done using a protocol called Link Qualit...

SeisSol is a simulation software for seismic wave propagation and earthquake scenarios. It solves the fully elastic wave equations in heterogeneous media. Incorporating dynamic rupture simulation it performs complex multiphysics earthquake simulations. To account for complicated geometries SeisSol uses a fully unstructured tetrahedral mesh. Recent publications [1], [2] have shown that SeisSol i...