Multifield Problems: State of the Art

ISBN-13: 9783540675112 / Angielski / Twarda / 2000 / 278 str.

A. M. Sandig; W. Schiehlen; W. L. Wendland

Opis

The simulation of complex engineering problems often involves an interaction or coupling of individual phenomena, which are traditionally related by themselves to separate fields of applied mechanics. Typical examples of these so- called multifield problems are the thermo-mechanical analysis of solids with coupling between mechanical stress analysis and thermal heat transfer processes, the simulation of coupled deformation and fluid transport mechanisms in porous media, the prediction of mass transport and phase transition phenomena of mixtures, the analysis of sedimentation proces- ses based on an interaction of particle dynamics and viscous flow, the simulation of multibody systems and fluid-structure interactions based on solid-to-solid and solid-to-fluid contact mechanisms.

Spis treści

The Many Roles of Viscosity in Solid Mechanics.- Multiscale Approach to a Basic Problem of Materials Mechanics (Propagation of Phase-Transition Fronts).- Section 1: Two and Multiphase Flows.- Analysing Particle Sedimentation in Fluids by Measure-Valued Stochastic Processes.- Phenomenological Model of Sedimentation-Consolidation Processes.- The Structure of Bidisperse Suspensions at Low Reynolds Numbers.- Lattice Boltzmann Simulations of Complex Multiphase Flows.- Interface Tracking in Multiphase Flows.- Section 2: Mechanics of Materials and Multiscaling.- Finite Element Computation of Macroscopic Quantities in Nonconvex Minimisation Problems and Applications in Materials Science.- Homogenization of an Initial-Boundary Value Problem Describing Evolving Microstructure.- Aspects of Homogenization Techniques and Multigrid Solving.- Estimates on the Mixture Function for Multiphase Problems in Elasticity.- A Two—Scale Micro—Macro—Approach to Anisotropic Finite Plasticity of Polycrystals.- Section 3: Solid—Fluid—Interaction.- Boundary Conditions at the Viscous Sliding Interface of Incompressible Porous Deformable Media.- Computational Experience from the Solution of Coupled Problems in Ship Dynamics.- On the Adaptive Computation of Shear Bands in Frictional Geomaterials.- Intrinsic Viscoelasticity of Porous Materials.- Numerical Simulation of Fluids Interacting with Moving Rigid Bodies.- Partitioned Analysis of Transient Nonlinear Fluid Structure Interaction Problems Including Free Surface Effects.- Section 4: Efficient Solvers and Adaptivity.- Domain Decomposition Methods in the Design of High Power Electronic Devices.- Matrix Compression for the Radiation Heat Transfer in Exhaust Pipes.- An Iterative Substructuring Method with Lagrange Multipliers for Elasticity Problems Using Approximate Neumann Subdomain Solvers.- A New a Posteriori Error Estimator in Adaptive Direct Boundary Element Methods. The Neumann Problem.- Efficient Elasto-Plastic Simulation.- Section 5: Contact and Fracture.- Sensitivity and Optimal Control in Contact Mechanics.- On the Treatment of Contact Problems in Elasto-Plasticity.- On Contact Problems for Linear and Nonlinear Elastic Plates: Existence of Solutions and Application of Augmented Lagrangian Method.- Longitudinal Wave Propagation in Conical Rods Subject to Impacts.- A Survey on Dynamic Contact Problems with Coulomb Friction.- Numerical Simulation of Noise Radiation from Rolling Tires.- Stress Singularities in Composites.

Blurb

The simulation of complex engineering problems often involves an interaction or coupling of individual phenomena, which are traditionally related by themselves to seperate fields of applied mechanics. Typical examples of these so-called multifield problems are the thermo-mechanical analysis of solids with coupling between mechanical stress analysis and thermal heat transfer processes, the simulation of coupled deformation and fluid transport mechanisms in porous media, the prediction of mass transprot and phase transition phenomena of mixtures, the analysis of sedimentation processes based on an interaction of particle dynamics and viscous flow, the simulation of multibody systems and fluid-structure interactions based on solid-to-solid and solid-to-fluid contact mechanisms.