New Diagnostic Techniques for an Automated Hemming Validation of Hang-On Parts

2015 ◽  
Vol 639 ◽  
pp. 509-516 ◽  
Author(s):  
Christoph Kaiser ◽  
Martin Zubeil ◽  
Karl Roll ◽  
Wolfram Volk
Keyword(s):  
Finite Element ◽  
Early Development ◽  
Diagnostic Technique ◽  
Diagnostic Techniques ◽  
The Body ◽  
Development Phase ◽  
Fast Analysis ◽  
Early Development Phase ◽  
Set Up ◽  
Parts Manufacturing

Due to the increasingly shorter development times in the automotive industry the aspect of a continuous virtual product validation is getting more important. For example, in the field of the body in white construction the metal forming-specific process steps in the press shop and the hemming processes in the body shop are designed with the aid of finite element simulations. Even though the computing speeds of the latest finite element solvers are increasing constantly, there is still a huge effort in time to do the pre-and post-processing of a hemming simulation. In order to improve the response time of the hang-on-parts’ manufacturing process verification, a metamodel-based part analysis is aspired. Based on a categorization of the part outline, which has to be analysed, a validation of the hemming process is carried out by using mathematical metamodels in terms of predicting failure probability and production feasibility. By splitting up the part outline into individual segments a fast analysis can be achieved. Here, an automated process is evaluating each segment individually with a special diagnostic technique. The system delivers output results, such as plastic strain values, the tendency of wrinkling, flange length, roll in, etc. Especially in an early development phase, this procedure is advantageous to compare and evaluate different hemming concept alternatives on an efficient way. The high variety of hang-on-parts, which have to be validated, requires that the simulation outlay has to be as small as possible. With this new diagnostic technique an automated hemming validation of hang-on-parts can be executed without doing a finite-element-simulation. So, there is no simulation model which has to be set up, calculated and evaluated. This helps to reduce the time effort and the amount of simulation loops for validating a hemming process. Furthermore, the degree of the part maturity is increased in an early development phase very efficiently.

scholarly journals Parametric Modeling of Mass and Volume Effects for Battery Electric Vehicles, with Focus on the Wheel Components

2020 ◽  
Vol 11 (4) ◽  
pp. 63
Author(s):  
Lorenzo Nicoletti ◽  
Andrea Romano ◽  
Adrian König ◽  
Ferdinand Schockenhoff ◽  
Markus Lienkamp
Keyword(s):  
Early Development ◽  
Electric Vehicles ◽  
Parametric Modeling ◽  
Installation Space ◽  
Design Parameters ◽  
Development Phase ◽  
Battery Electric Vehicles ◽  
Vehicle Weight ◽  
Early Development Phase ◽  
Weight Fluctuations

Defining a vehicle concept during the early development phase is a challenging task, since only a limited number of design parameters are known. For battery electric vehicles (BEVs), vehicle weight is a design parameter, which needs to be estimated by using an iterative approach, thus causing weight fluctuations during the early development phase. These weight fluctuations, in turn, require other vehicle components to be redesigned and can lead to a change in their size (secondary volume change) and weight (secondary weight change). Furthermore, a change in component size can impact the available installation space and can lead to collision between components. In this paper, we focus on a component that has a high influence on the available installation space: the wheels. We model the essential components of the wheels and further quantify their secondary volume and weight changes caused by a vehicle weight fluctuation. Subsequently, we model the influence of the secondary volume changes on the available installation space at the front axle. The hereby presented approach enables an estimation of the impact of weight fluctuations on the wheels and on the available installation space, which enables a reduction in time-consuming iterations during the development process.

scholarly journals SOCIAL SUSTAINABILITY IN THE DEVELOPMENT OF SERVICE ROBOTS

2020 ◽  
Vol 1 ◽  
pp. 1949-1958 ◽  
Author(s):  
J. L. Kohl ◽  
M. J. van der Schoor ◽  
A. M. Syré ◽  
D. Göhlich
Keyword(s):  
Early Development ◽  
Technology Development ◽  
Social Sustainability ◽  
Service Robots ◽  
Development Phase ◽  
Economic Aspects ◽  
Key Issues ◽  
Early Development Phase ◽  
Automation Technology ◽  
Individual Importance

AbstractWe introduce the concept of social sustainability, intertwined with ecological and economic aspects, to the field of service robots and comparable automation technology. It takes a first step towards a comprehensive guideline that operationalizes and applies social sustainability. By applying this guideline to the project MURMEL we offer a concept that collects and rates social key issues to visualize their individual importance. Social sustainability is an important and often overlooked aspect of sustainable technology development which should be considered in the early development phase.

An approach for modeling a formal Use Case Type at early development phase without loosing abstraction

2010 ◽  
Vol 7 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Francisco Supino Marcondes ◽  
Ítalo Santiago Vega ◽  
Luiz Alberto Vieira Dias
Keyword(s):  
Early Development ◽  
Use Case ◽  
Development Phase ◽  
Case Type ◽  
Early Development Phase

scholarly journals Preprocessing Greek Papyri for Linguistic Annotation

2017 ◽  
Vol Special Issue on... (Towards a Digital Ecosystem:...) ◽  
Author(s):  
Marja Vierros ◽  
Erik Henriksson
Keyword(s):  
Early Development ◽  
Linguistic Variation ◽  
Development Phase ◽  
Ancient Greek ◽  
Text Type ◽  
Future Developments ◽  
Linguistic Annotation ◽  
International Audience ◽  
Early Development Phase ◽  
Linguistic Structures

International audience Greek documentary papyri form an important direct source for Ancient Greek. It has been exploited surprisingly little in Greek linguistics due to a lack of good tools for searching linguistic structures. This article presents a new tool and digital platform, “Sematia”, which enables transforming the digital texts available in TEI EpiDoc XML format to a format which can be morphologically and syntactically annotated (treebanked), and where the user can add new metadata concerning the text type, writer and handwriting of each act of writing. An important aspect in this process is to take into account the original surviving writing vs. the standardization of language and supplements made by the editors. This is performed by creating two different layers of the same text. The platform is in its early development phase. Ongoing and future developments, such as tagging linguistic variation phenomena as well as queries performed within Sematia, are discussed at the end of the article.

Finite Element Modeling and Analysis for a Certain Urban Bus Frame

2013 ◽  
Vol 433-435 ◽  
pp. 2239-2245
Author(s):  
Ya Hui Li ◽  
Wei Dong Luo ◽  
Rui Zhou
Keyword(s):  
Finite Element ◽  
Element Model ◽  
The Body ◽  
Body Frame ◽  
Cross Sectional ◽  
Modeling And Analysis ◽  
Calculation Results ◽  
Bus Body ◽  
Urban Bus ◽  
Set Up

Using CATIA set up a 3d model of urban bus frame in this paper, And ANSYS13.0 is used to establish the body frame finite element model of the certain urban bus body frame, Based on this model, the static characteristics under various conditions were analyzed, and the features of stress and strain distribution are gotten. Through the analysis of calculation results, we can conclude that this body frame around the column to the rear windscreen beam junction strength in insufficient, need to increase cross-sectional area of the left column; The floor behind driver seats strength is not enough, need to add two beams to strengthen the support. And the calculation result shows that the rest of the frame has a certain extent optimization space, and can provide the basis for the next step of lightweight.

scholarly journals PARAMETRIC MODELLING OF WEIGHT AND VOLUME EFFECTS IN BATTERY ELECTRIC VEHICLES, WITH FOCUS ON THE GEARBOX

2021 ◽  
Vol 1 ◽  
pp. 2389-2398
Author(s):  
Lorenzo Nicoletti ◽  
Peter Köhler ◽  
Adrian König ◽  
Maximilian Heinrich ◽  
Markus Lienkamp
Keyword(s):  
Early Development ◽  
Electric Vehicles ◽  
Parametric Modelling ◽  
Development Phase ◽  
Vehicle Architecture ◽  
Battery Electric Vehicles ◽  
Novel Approach ◽  
Drastic Effect ◽  
Early Development Phase ◽  
Selling Point

AbstractThe modeling of battery electric vehicles (BEVs) still represents a challenge for vehicle manufacturers. The installation of the new types of components needed for BEVs gives rise to uncertainties in the quantification of parameters like the vehicle's weight. Indeed, vehicle weight plays a key role, since it has a drastic effect on the vehicle's range, which is an important selling point for BEVs. Uncertainties in weight estimation create weight fluctuations during the early development phase and the need to resize components like the electric machine or battery. This in turn affects the components' volume and weight. However, such resizing can also lead to component collision and unfeasibility of the vehicle architecture. To solve this problem and to support concept engineers during the early development phase, an iterative approach is required that is capable of estimating weight and volume fluctuations in the relevant components. The approach should also consider the geometrical interdependencies of the components, to ensure that no collisions occur between them. Taking the gearbox as an example application, this paper presents a novel approach that satisfies these requirements.

scholarly journals Modular Platforms for Optofluidic Systems

2014 ◽  
Vol 1 (1) ◽  
Author(s):  
Marko Brammer ◽  
Timo Mappes
Keyword(s):  
Environmental Monitoring ◽  
Optical Networks ◽  
Early Development ◽  
Green Energy ◽  
Development Phase ◽  
Sensing Systems ◽  
Industrial Implementation ◽  
Early Development Phase ◽  
Optofluidic Sensing

AbstractOptofluidics is increasingly gaining impact in a number of different fields of research, namely biology and medicine, environmental monitoring and green energy. However, the market for optofluidic products is still in the early development phase. In this manuscript, we discuss modular platforms as a potential concept to facilitate the transfer of optofluidic sensing systems to an industrial implementation. We present microfluidic and optical networks as a basis for the interconnection of optofluidic sensor modules. Finally, we show the potential for entire optofluidic networks

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