determination of critical points on hot stress-strain curve of metals is crucial in thermo-mechanical processes design. in this investigation a mathematical modeling is given to illustrate the behavior of metal during hot deformation processes such as hot rolling. the critical strain for the onset of dynamic recrystallization has been obtained as a function of strain at the maximum stress. in a...

In this paper we present a novel, interactive shape modeling technique: Dynamic Implicit Solid Modeling, which unifies volumetric implicit functions and powerful physics-based modeling. Although implicit functions are extremely powerful in graphics, geometric design, and shape modeling, the full potential of implicit functions is yet to be fully realized due to the lack of flexible and interact...

Design patterns capture the distilled experience of expert designers. The compositions of design patterns may reuse design experience and solve a set of problems. Design patterns and their compositions are usually modeled using unified modeling language (UML). When a design pattern is applied or composed with other patterns, the pattern-related information may be lost because UML does not track...

SMART, Solid Modeling Aerospace Research Tool, isthe Vehicle AnalysisBranch of NASA Langley Research Center's computer-aided design tool used in aerospace vehicledesign. Modeling of structuralcomponents using SMART includes the representationof the transverseor cross-wiseelements of a vehicle'sfuselage,ringframes and bulkheads. Ringframes are placed along a vehicle'sfuselage to provide structur...

in this paper, numerical simulation of frp composite cylinder tubes progressive crushing processes is conducted using ls-dyna. details on the numerical modeling strategy are given and discussed. it is found that triggers introduced in the numerical simulation can effectively model the bevel trigger at the end of the tubular specimens. it is also found that two-layer finite element model based o...

Earth-fill dams stability in steady state seepage condition is very important, especially during earthquakes. Numerical software analyses require accurate and realistic modeling of construction stages. Since earth-fill dams are constructed in different layers, so these conditions should be considered in software modeling to achieve a reasonable design. In this study, an earth-fill dam is modele...

Design patterns and frameworks have become important concepts in object development. As well important is UML as the standard modeling language. But there is not sufficient support to model design patterns and frameworks in design class diagrams (DCDs) without using the extension mechanisms, that is, stereotypes, constraints, and tagged values. Some approaches have been developed to improve the...

Intelligent vehicle design is a complex task which requires multidomains modeling and abstraction. Transaction-level modeling (TLM) and component-based software development approaches accelerate the process of an embedded system design and simulation and hence improve the overall productivity. On the other hand, system-level design languages facilitate the fast hardware synthesis at behavioral ...