Managing the Mechanical Data Base

2009 ◽  
Author(s):  
Yuval Beiski
Keyword(s):  
Data Base ◽  
Mechanical Assembly ◽  
Design Data ◽  
Interface Control ◽  
Production Models ◽  
Mechanical Assemblies ◽  
Data Production ◽  
Current Design ◽  
Cad Models ◽  
Analysis Models

Developing complex systems usually involves many activities that are based on the integration of the designer CAD models: mechanical assemblies, analysis models (CFD, FEA, Thermal, etc.), interface control, tool and jig design data, production models, mass properties, ILS, documentation, and many more. Proper management of the integrated data base can lead to cost and time savings by parallel design, updated interfaces, and minimum integration faults; and can increase the reuse of parts and support the system engineering decisions. On the other hand, improper data managing can lead to major failures in the design process and during the mechanical assembly, which might result in loss of time, money and reputation. In order to assure efficient and accurate management of the mechanical data base, special training is required for designated personnel – the Mechanical Integrator (MI). The Mechanical Integrator ensures the implementation of appropriate working procedures by the sub-systems designers, that the current design is based on approved and released data, the use of generic parts and much more by managing an updated and robustly built data base. The Mechanical Integrator has a major roll in the project, but does he have the necessary knowledge and training? This paper presents the advantages of managing the mechanical data base; focusing on the techniques in use for building and monitoring it properly and explains the training program of the Mechanical Integrator, a person in charge over the mechanical data base and data flow.

Development and Research of Management Information System Based on Multilayer Structure

2014 ◽  
Vol 687-691 ◽  
pp. 2347-2350
Author(s):  
Shuang Liu
Keyword(s):  
Information System ◽  
Data Base ◽  
Management Information System ◽  
Multilayer Structure ◽  
New Technology ◽  
Integrated Design ◽  
Management Information ◽  
Design Data ◽  
Sql Server 2000 ◽  
Whole Process

In the whole process of developing the management information system, people give priority to application of new technology and instrument such as the newly developed instrument Visual Studio from Microsoft. Connected with SQL Server 2000 data base, VB.NET, ASP.NET and ADO.NET technology are able to make the structure of softwares more reasonable, convenient and pragmatic, largely increasing the overall property of the software system. According to the steps of engineering design, this passage is to illustrate the entire system in an all-around way in terms of demand analysis, integrated design, data base design, safety design as well as report design. This passage is to illustrate a design process of a management information system based on C/S and B/S multilayer structure.

Geometric Modeling and Simulation of Mechanical Assemblies With Elastic Components

1994 ◽  
Author(s):  
Yong Fang ◽  
F. W. Liou
Keyword(s):  
Finite Element Method ◽  
Geometric Modeling ◽  
Three Dimensional ◽  
Elastic Behavior ◽  
Elastic Analysis ◽  
Simulation Tool ◽  
Body System ◽  
Mechanical Assembly ◽  
Mechanical Assemblies ◽  
Multi Body

Abstract In this paper, the implementation of a modeling system for the simulation of three dimensional mechanical assemblies with elastic components is presented. A mechanical assembly is modeled as a multi-body system with changing topologies. The elastic behavior can be automatically modeled using finite element method. With this simulation tool, a designer can interactively create an assembly of mechanical components ready for dynamic and elastic analysis. This paper presents a prototype of the modeling system.

Statistical Tolerance Analysis of Over-Constrained Mechanical Assemblies With Form Defects Considering Contact Types

2019 ◽  
Vol 19 (2) ◽  
Author(s):  
Edoh Goka ◽  
Lazhar Homri ◽  
Pierre Beaurepaire ◽  
Jean-Yves Dantan
Keyword(s):  
Tolerance Analysis ◽  
Optimization Methods ◽  
Optimization Techniques ◽  
Behavior Modeling ◽  
Functional Requirements ◽  
Mechanical Assembly ◽  
Mechanical Assemblies ◽  
Statistical Tolerance ◽  
The Individual ◽  
Statistical Tolerance Analysis

Tolerance analysis aims toward the verification impact of the individual tolerances on the assembly and functional requirements of a mechanism. The manufactured products have several types of contact and are inherent in imperfections, which often causes the failure of the assembly and its functioning. Tolerances are, therefore, allocated to each part of the mechanism in purpose to obtain an optimal quality of the final product. Three main issues are generally defined to realize the tolerance analysis of a mechanical assembly: the geometrical deviations modeling, the geometrical behavior modeling, and the tolerance analysis techniques. In this paper, a method is proposed to realize the tolerance analysis of an over-constrained mechanical assembly with form defects by considering the contacts nature (fixed, sliding, and floating contacts) in its geometrical behavior modeling. Different optimization methods are used to study the different contact types. The overall statistical tolerance analysis of the over-constrained mechanical assembly is carried out by determining the assembly and the functionality probabilities based on optimization techniques combined with a Monte Carlo simulation (MCS). An application to an over-constrained mechanical assembly is given at the end.

scholarly journals Data production models for the CDF experiment

2005 ◽  
Author(s):  
J. Antos ◽  
M. Babik ◽  
D. Benjamin ◽  
S. Cabrera ◽  
A.W. Chan ◽  
...  
Keyword(s):  
Production Models ◽  
Data Production

A New Approach to Generic Design Feature Recognition by Detecting the Hint of Topology Variation

2012 ◽  
Author(s):  
Sha Wan ◽  
Yunbao Huang ◽  
Qifu Wang ◽  
Liping Chen ◽  
Yuhang Sun
Keyword(s):  
Feature Recognition ◽  
Design Feature ◽  
Design Features ◽  
Hybrid Features ◽  
New Approach ◽  
Complex Part ◽  
Current Design ◽  
Cad Models ◽  
Core Idea ◽  
Generic Design

Current design feature recognition mainly depends on the connective attributes of edges or faces in the CAD models, such as convexity, concavity, and tangency. However, it is difficult to uniquely define the mixed connective attributes of the generic features in some cases. A novel generic design feature recognition approach by detecting the hint of topology variation is presented in this study. The core idea includes: 1) the resulting CAD model of a complex part is regarded as formed from an initial basic shape such as roughcast and has been operated by introducing generic design features, which subsequently may cause topology variation; 2) Such topology variations, e.g. vertex elimination, edge partition and face alteration, are utilized to obtain generalized properties of the generic design features, dispensing with the connective attributes. Finally, 1) we demonstrate in the experiments that the approach successfully recognizes the main types of generic design features, both isolate and hybrid features. 2) Furthermore, we exhibit the application of the approach in some engineering examples.

Conducting Outcomes Research in a Community-based Practice Setting

1994 ◽  
Vol 8 (4) ◽  
pp. 193-200 ◽  
Author(s):  
Sanford R. Hoffman ◽  
Martin C. Mahoney ◽  
James F. Chmiel ◽  
Gerald D. Stinziano ◽  
Kevin N. Hoffman
Keyword(s):  
Data Base ◽  
Patient Outcomes ◽  
Medical Practice ◽  
Outcomes Research ◽  
Chronic Sinusitis ◽  
Research Effort ◽  
Base System ◽  
Clinical Practices ◽  
Community Based ◽  
Design Data

Although there is both a need and a desire to critically evaluate data from community-based clinical practices, many clinicians are inadequately prepared for this undertaking. This paper illustrates the process of establishing a computerized research data base in a community-based medical practice by highlighting issues of design, data collection, enrollment, and data management. In addition, a practical illustration of implementing such a data base system to perform community-based outcomes research among patients with chronic sinusitis is presented. Data bases established for community-based outcomes research can serve as a means for a single medical practice to examine patient outcomes or can serve as a component of a collaborative multi-site research effort.

Vehicle Concept Model Abstractions for Integrated Geometric, Inertial, Rigid Body, Powertrain, and FE Analyses

2011 ◽  
Author(s):  
Gary Osborne ◽  
Glen Prater ◽  
Rostyslav Lesiv ◽  
David Lamb ◽  
Matthew Castanier
Keyword(s):  
Rigid Body ◽  
Design Space ◽  
Fuel Efficiency ◽  
Three Dimensional ◽  
Space Representation ◽  
Concept Model ◽  
Vehicle Architecture ◽  
Cad Models ◽  
Analysis Models ◽  
Vehicle Development Process

Vehicle analysis models of any kind have their basis in some type of physical representation of the design domain. Rather than describing three-dimensional continua of a collection of components as is done in detail-level CAD models, an architecture-level abstraction describes fundamental function and arrangement, while capturing just enough physical detail to be used as the basis for a meaningful design space representation and eventually, analyses that permit architecture assessment. The design information captured by the abstractions is available at the very earliest stages of the vehicle development process, so the model itself can function as a “design space for ideas”. In this paper we describe vehicle architecture abstractions appropriate for integrated model extractions suitable for geometric, inertial, rigid body, acceleration, braking, fuel efficiency, structural, and NVH assessments. Additionally, we discuss the requisite level of information required for each analysis type.

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