Modeling Workbench Research Articles

Design and Analysis of Ventilated Disc Brake by Using Different Materials: A Review

Abstract: Disc rotor is component which is used in automotive vehicle wheels to apply brakes, the concept which works during brake is frictional resistance between pad and rotor. Due to frictional resistance the heat gets generated between disc and pad so, in order to reduce the effect of heat the rotor is designed as ventilated disc. The common material which is used to manufacture the disc rotor is Grey Cast Iron. The purpose of this review paper is to study the behavior and kinds of work has been done before on Disc Brake and based on this review paper we have decided to do structural analysis on disc brake rotor using different materials like GREY CAST IRON, TITANIUM, MAGNESIUM ALLOY, ALUMINUM ALLOY, and STRUCTURAL STEEL and then compare the results of different materials with conventional material (GREY CAST IRON) that is usually used in disc brake rotor. The analysis will be done by using CATIA for modeling and ANSYS WORKBENCH 18.0 for structural analysis. Based on previous research the objective of this review paper is “Design and analysis of ventilated disc brake by using different materials”

A generic framework for representing and analyzing model concurrency

Recent results in language engineering simplify the development of tool-supported executable domain-specific modeling languages (xDSMLs), including editing (e.g., completion and error checking) and execution analysis tools (e.g., debugging, monitoring and live modeling). However, such frameworks are currently limited to sequential execution traces and cannot handle execution traces resulting from an execution semantics with a concurrency model supporting parallelism or interleaving. This prevents the development of concurrency analysis tools, like debuggers supporting the exploration of model executions resulting from different interleavings. In this paper, we present a generic framework to integrate execution semantics with either implicit or explicit concurrency models, to explore the possible execution traces of conforming models, and to define strategies for helping in the exploration of the possible executions. This framework is complemented with a protocol to interact with the resulting executions and hence to build advanced concurrency analysis tools. The approach has been implemented within the GEMOC Studio. We demonstrate how to integrate two representative concurrent meta-programming approaches (MoCCML/Java and Henshin), which use different paradigms and underlying foundations to define an xDSML’s concurrency model. We also demonstrate the ability to define an advanced concurrent omniscient debugger with the proposed protocol. The paper, thus, contributes key abstractions and an associated protocol for integrating concurrent meta-programming approaches in a language workbench, and dynamically exploring the possible executions of a model in the modeling workbench.

PROVE Tool: A tool for designing and analyzing process descriptions

<h2>Abstract</h2> Process descriptions describe systems and characterize the world as acted upon. They serve as the means for generating objects that have desired characteristics as well as for communicating and coordinating planned and/or enacted processes. In research, process descriptions provide causal mechanisms and context as a basis for reproducibility and theory building. PROVE Tool is an open-source modeling workbench which allows authoring and analyzing process descriptions rigorously, based on a model-based approach.

The ICEMAN, a heterogeneous platform for analysis of neutron scattering data

The Integrated Computational Environment for Modeling and Analysis of Neutron data (ICEMAN) is a modeling and analysis workbench for multi-modal studies, designed with neutron science in mind.The i...

Contact Stress and Fatigue Analysis of Spur Gear

Spur gear is the most basic type of parallel-axis gear. In this study, contact stress and fatigue life of spur gear for different modules and for different materials were studied. The commercially available Solidworks 2016 is used for modelling and ANSYS Workbench tool for discretizing and solving. The analysis has been performed on the gear models of modules 1mm, 2mm and 3mm to observe the distribution of contact stress and life. The graphic results obtained were compared and it was found that contact stress decreases as the module increases and also aluminium alloy was having the least stress and high fatigue life among the selected materials. Hence from the finite element analysis, it’s found that the contact stress depends on the module and material used. Similarly fatigue life of gear purely depends on the material chosen.

The Exploratory Modeling Workbench: An open source toolkit for exploratory modeling, scenario discovery, and (multi-objective) robust decision making

There is a growing interest in model-based decision support under deep uncertainty, reflected in a variety of approaches being put forward in the literature. A key idea shared among these is the use of models for exploratory rather than predictive purposes. Exploratory modeling aims at exploring the implications for decision making of the various presently irresolvable uncertainties. This is achieved by conducting series of computational experiments that cover how the various uncertainties might resolve. This paper presents an open source library supporting this. The Exploratory Modeling Workbench is implemented in Python. It is designed to (i) support the generation and execution of series of computational experiments; and (ii) support the visualization and analysis of the results from the computational experiments. The Exploratory Modeling Workbench enables users to easily perform exploratory modeling with existing models, identify the policy-relevant uncertainties, assess the efficacy of policy options, and iteratively improve candidate strategies.

Biodiversity and climate change use scenarios framework for the GEOSS interoperability pilot process

Climate change threatens to commit 15–37% of species to extinction by 2050. There is a clear need to support policy-makers analyzing and assessing the impact of climate change along with land use changes. This requires a megascience infrastructure that is capable of discovering and integrating enormous volumes of multi-disciplinary data, i.e. data from biodiversity, earth observation, and climatic archives. Metadata and services interoperability is necessary. The Global Earth Observation System of Systems (GEOSS) works to realize such an interoperability infrastructure based on systems architecture standardization. In this paper we describe the results of linking the infrastructures of Climate Change research and Biodiversity research together using the approach envisioned by GEOSS. In fact, we present and discuss a service-oriented framework which was applied to implement and demonstrate the Climate Change and Biodiversity use scenario of the GEOSS Interoperability Process Pilot Project (IP3). This interoperability is done for the purpose of enabling scientists to do large-scale ecological analysis. We describe a generic use scenario and related modelling workbench that implement an environment for studying the impacts of climate change on biodiversity. The Service Oriented Architecture framework, which realizes this environment, is described. Its standard-based components and services, according to GEOSS requirements, are discussed. This framework was successfully demonstrated at the GEO IV Ministerial Meeting in Cape Town, South Africa November 2007.

Computed Assisted Design of Models for the Thermomechanical Processing of Steels by means of a New Modelling Tool

A new modelling workbench has been developed for the computation of the microstructural evolution of steels in the course of their thermomechanical processing. Within this graphical user interface, the designer can easily construct a new model by interlinking different modules available in reference libraries, whatever their original informatic framework. This universal platform organises the data flow through the modules integrated in the logical chart. On the basis of a CRM internal library of modules written in FORTRAN, a data block diagram is proposed to compute the through-thickness temperature profile of a steel hot band during its process in the finishing mill and the corresponding thickness evolution of the oxide scale according to different cooling schemes. For this simulation, a conditional loop is used for the data flow through an interstand cooling module, a module for the computation of the deformation and frictional heat released in the roll gap, and a module for the heat conduction within the roll bite. In a second simulation example, the impact of a heterogeneous temperature pattern at the start of coiling on the final mechanical properties is evaluated with the help of metallurgical models of precipitation of microalloying elements and phase softening for multiphase steels coupled to a thermal model of coil cooling.

Shape selection menu for grand scale discontinua systems

It is now widely recognised that particle shape plays an important role in the behaviour of grand scale discontinua systems and may be partially responsible for some of the unexplained phenomena of particulate physics. It is therefore very important that a virtual discontinua modelling workbench includes a library comprising a large spectrum of shapes including real‐shaped particles of interest to scientists and engineers. In this context a question of selecting a particle from such a library arises. In this paper, a particular selection procedure based on shape selection chart is proposed.

On the explicit modelling of systems of human resources

Structured design methods and modelling formalisms are being developed to enable the engineering of systems of human resources typically deployed within a manufacturing enterprise. Such a set of methods and formalisms is described. The purpose and composition of a meta-model of human resources and their organization in manufacturing systems is explained, as is the representation and implementation of this model using Unified Modelling Language constructs and the ProcessWise modelling workbench respectively. Also reported is progress made in respect of an industrial case study, where the methods and formalisms are facilitating manufacturing process redesign and the methodological assignment of groups of people to shop-floor operations, based on explicit models of knowledge and workload requirements.

Designing argumentation for conceptual development

If Virtual Learning Environments are to support real learning, they must promote effective teaching–learning processes and interactions. In this paper we describe a collaborative, computer-based framework for argumentation that supports the dialogue process in ways which stimulate belief revision leading to conceptual change and development in science. This pedagogy is specified as a prescriptive ‘dialogue game’, which models features of the tutorial process. Within this scheme, the learner adopts the role of an ‘explainer’ whilst the system plays a facilitating role, and these participants collaborate to develop a shared explanatory model of a qualitative, causal domain. The design framework includes an abstract world model of a qualitative causal system, some ‘commonsense’ reasoning rules, an interaction language and dialogue strategies and tactics, that are co-ordinated within a facilitating dialogue game. A prototype CoLLeGE (Computer based Lab for Language Games in Education) system implements the framework and operates as a dialogue modelling work-bench for demonstrating, investigating and developing the approach. An empirical study showed that students revised their beliefs and improved their explanatory models, and held to their revised and improved conceptions in a delayed post-test. In using CoLLeGE to simulate these dialogues, we found that the tutor’s low-level tactical pedagogies emerged and developed reactively during the dialogues, in response to conceptual difficulties experienced by the students.

Improving marine ecosystem models: Use of data assimilation and mesocosm experiments

Our inability to accurately model marine food webs severely limits the prognostic capabilities of current generation marine biogeochemistry models. To address this problem we examine the use of data assimilation and mesocosm experiments to facilitate the development of food web models. The components of the data assimilation demonstrated include the construction of measurement models, the adjoint technique to obtain gradient information on the objective function, the use of parameter constraints, incorporation of discrete measurements and assessing parameter observability. We also examine the effectiveness of classic and contemporary optimization routines used in data assimilation. A standard compartment-type food web model is employed with an emphasis on organic matter production and consumption. Mesocosm experiments designed to examine the interaction of inorganic nitrogen with organic matter provide the data used to constrain the model.Although we are able to obtain reasonable e ts between the mesocosm data and food web model, the model lacks the robustness to be applicable across trophic gradients, such as those occurring in coastal environments. The robustness problem is due to inherent structural problems that render the model extremely sensitive to parameter values. Furthermore, parameters governing actual ecosystems are not constants, but rather vary as a function of environmental conditions and species abundance, which increases the sensitivity problem. We conclude by briee y discussing possible improvements in food web models and the need for rigorous comparisons between models and data (a modeling workbench) so that performance of competing models can be assessed. Such a workbench should facilitate systematic improvements in prognostic marine food web models.

Integrating information and material flow executable models, an SDL-based information flow modelling tool

Continuous pressure for competitiveness increase led to the concept of enterprise integration. Within this context a modular approach to enterprise modelling, structuring it into manageable units which cooperate with each other according to identified needs and sharing information on request, is mandatory. The approach presented here encompasses a Modelling Workbench supporting the development of applications for the management and control of manufacturing operations: An integrated modelling and simulation environment providing both material and information flow modelling facilities, as well as the integration of material and information flow executable models. Building on Simple ++ , a simulation tool supporting material flow modelling, a class library allowing the use of SDL (Specification and Description Language) for information flow modelling and simulation was developed. The paper also illustrates the SDL environment concept and its significance in the integrated model, as well as its use for shop f...

TAGUS ? A user and learner modeling workbench

In this paper we will describe, outline and exemplify the functionalities and architecture of a User and Learner Modeling System called TAGUS (within the project “Theory and Applications for General User/Learner-modeling Systems”).