Railway rails accumulate large plastic deformations due to cyclic rolling contact loading. The alter the rail geometry, affect material behavior, and cause crack formation growth. complex interactions between these phenomena require high fidelity simulations be understood. 3d finite element are accurate, but their computational cost limits possible number of simulated cycles. We propose a simul...

This paper aims to develop a numerical multiscale homogenization method for prediction of elasto-viscoplastic properties of a high performance concrete (HPC). The homogenization procedure is separated into two-levels according to the microstructure of the HPC: the mortar or matrix level and the concrete level. The elasto-viscoplastic behavior of individual microstructural phases of the matrix a...

There is a growing need across multiple industries for lightweight materials with improved material performance and reduced manufacturing costs. Composites 3D-woven reinforcement could help fill this need. Their use however, requires the development of computationally efficient industrially applicable models to predict their non-linear behaviour. This work proposes macroscale elasto-plasticity ...

In a previous companion paper (Part I: A Plastic Hinge Approach), adaptive elasto-plastic analysis of space frames was discussed in the context of a plastic hinge approach. The present paper extends the concept of automatic mesh refinement to deal with accurate elasto-plastic large displacement analysis accounting for the spread of yield within structural members. This is achieved through the u...

There is increasing interest in the use of iterative rather than direct solvers for geotechnical finite element analysis. For large 3D problems iterative solvers offer the only possibility of economical solution on a desktop PC. The major stumbling block with iterative solvers is ensuring fast convergence to a suitably accurate solution. The system of equations is always “preconditioned” to imp...

We propose, ElastO, a distributed system for constructing and maintaining scalable churn-resistant overlay networks for topic-based publish/subscribe (pub/sub) systems. ElastO is designed to dynamically tread the balance among several key dimensions: (a) topic-connected overlay (TCO), i.e., the sub-overlay induced by nodes interested in any topic is connected, (b) low maximum and average node f...

This is one of two companion papers presenting new procedures for the efficient largedisplacement analysis of steel frames in the elasto-plastic range. Emphasis is given in this paper to the development and improvement of a plastic hinge approach utilizing the concept of adaptive mesh refinement. In the companion paper, such a concept is discussed in the context of a more accurate approach acco...

The mechanics of a woven wire mesh material are investigated to characterize the elasto-plastic behavior of this class of materials under tensile conditions. The study focuses on a representative 316 L stainless steel (316 L SS) 325 2300 twill-dutch woven wire mesh typically used as a fine filtration media in applications such as water reclamation, air filtration, and as a key component in swab...