that varies with distance, r, from the crack tip as r 1 2 . In this paper, a traction free plane stress wedge with a discrete cohesive zone along the intended crack-path is studied. Of interest is the in uence of the cohesive zone on the crack tip stress eld. Further, the in uence of the cohesive zone on the strain energy release rate is also investigated. Two example problems are studied; a do...

Project SUMMARY 1 Project DESCRIPTION 3 I. Objectives 3 II. Rationale 3 III. Conceptual Perspective 3 Modeling Strategies, Patterns and Mathematical Theorems, and Working Hypotheses 4 Heuristics for Theorizing Dynamic Evolution of Coherence among Formal Patterns 7 Dynamics 9 IV Measurement: Detecting Patterns in Networks 9 V. Hypothesis Tests on Social Transformations 10 VI. Modeling and Hypoth...

A one-dimensional vertical two-phase flow model for sedimentation-consolidation process is presented. The model is based on solving the continuity and momentum equations for both fluid and solid phases. In the non-cohesive case, the momentum transfer between the two phases is reduced to the drag force around a single particle modified to take the hindrance effects into account. In the cohesive ...

The fracture behaviour of human cortical bone was analysed considering a miniaturized version of the Double Cantilever Beam (DCB) test. A specific data reduction scheme based on crack equivalent concept was used to obtain the resistance curves. The definition of the cohesive laws mimicking the fracture process was performed measuring the crack tip opening displacement by digital image correlati...

we investigate the problem of the existence of a frame forright ideals of a c*-algebra a, without the use of the kasparov stabilizationtheorem. we show that this property can not characterize a as a c*-algebraof compact operators.

Concentrically braced frames (CBFs) are one of the efficient lateral load resisting systems in high seismicity regions. One of the common problems with the use of concentrically braced frames is limitation in the architectural application and position of the openings. Two-story X braced frames have more advantages than other configurations of concentrically braced frames, since in many cases th...

Our work seeks to greatly simplify the programming model of cohesive distributed systems. Here, a cohesive distributed activity is one that is conceptually an individual operation, yet executes across multiple physical devices. We believe that the communications structure of a distributed program should be separable from the software engineering modularization of the program. Current distribute...