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Integration of geometry modelling and behavior simulation based on graph-based design languages and functional mockup units

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Procedia CIRP 2024年 128卷 310-315页

作者： Patrick Saft Markus Pfeil Ralf Stetter Markus Till Stephan Rudolph Ravensburg-Weingarten University (RWU) Doggenriedstraße 88250 Weingarten Germany Institute of Aircraft Design University of Stuttgart Pfaffenwaldring 31 70569 Stuttgart Germany

This paper explores the automated creation of a digital twin, employing a framework based on graph-based design languages (GBDLs) and functional mock-up units (FMUs). Through this framework, all entities that represent a digital twin can be represented geometrically and enriched with behavioral properties. The goal is to create not only geometric entities, but also simulation architectures automatically. Kinematics, pneumatics, hydraulics and many other disciplines can be mapped and linked through this kind of simulation architecture. For this purpose, either a monolithic simulation, which transfers all domains into one simulation, is possible, or the setup of a co-simulation. In this case, each simulation is modeled separately and stored as a FMU. Each interface for input and output parameters of an FMU is defined by the functional mock-up interface (FMI) standard and therefore unique. This uniqueness allows different FMUs to be linked together and built up into a co-simulation. The links are defined via a simulation architecture and present the interface between two domains. This simulation architecture, like the whole digital twin, relates to GBDLs. This paper discusses the approach through the exemplary creation of a simulation architecture for a Festo™ assembly system.

关键词： model based systems engineering behavior modelling graph-based design languages co-simulation simulation architecture

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Using AutomationML and graph-based design languages for Automatic Generation of Digital Twins of Cyber-Physical Systems 27

Using AutomationML and Graph-Based Design Languages for Auto...

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27th ISTE International Conference on Transdisciplinary Engineering (TE) - Transdisciplinary Engineering for Complex Socio-Technical Systems in Perspective of Real-Life Application

作者： Beisheim, Nicolai Kiesel, Markus Linde, Markus Ott, Tobias Albstadt Sigmaringen Univ Albstadt Germany CMC Kiesel GmbH Hechingen Germany

ISBN: (纸本)9781643681115;9781643681108

The interdisciplinary development of smart factories and cyber-physical systems CPS shows the weaknesses of classical development methods. For example, the communication of the interdisciplinary participants in the development process of CPS is difficult due to a lack of cross-domain language comprehension. At the same time, the functional complexity of the systems to be developed increases and they act operationally as independent CPSs. And it is not only the product that needs to be developed, but also the manufacturing processes are complex. The use of graph-based design languages offers a technical solution to these challenges. The UML-based structures offer a cross-domain language understanding for all those involved in the interdisciplinary development process. Simulations are required for the rapid and successful development of new products. Depending on the functional scope, graphical simulations of the production equipment are used to simulate the manufacturing processes as a digital factory or a virtual commissioning simulation. Due to the high number of functional changes during the development process, it makes sense to automatically generate the simulation modelling as digital twins of the products or means of production from the graph-based design languages. The paper describes how digital twins are automatically generated using AutomationML according to the Reference Architecture Model Industry 4.0 (RAMI 4.0) or the Industrial Internet Reference Architecture (IIRA).

关键词： AutomationML graph-based design languages Digital Twin Cross-domain Engineering RAMI 4.0

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Towards an Automated Product-Production System design - Combining Simulation-based Engineering and graph-based design languages

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Procedia Manufacturing 2020年 52卷 258-265页

作者： Karl Kübler Dominik Schopper Oliver Riedel Stephan Rudolph Institute for Control Engineering of Machine Tools and Manufacturing Units (ISW) University of Stuttgart Seidenstr. 36 70174 Stuttgart Germany Institute of Aircraft Design (IFB) University of Stuttgart Pfaffenwaldring 31 70569 Stuttgart Germany Fraunhofer Institute for Industrial Engineering IAO Nobelstraβe 12 70569 Stuttgart Germany

In this paper, the authors elaborate a combination of graph-based design and simulation-based engineering into a new concept called Executable Integrative Product-Production Model (EIPPM). Today, the first collaborative process in engineering for all mechatronic disciplines is the virtual commissioning phase. Therefore, Digital Twins (DT) are modeled and run in a simulation. The authors see a hitherto untapped potential for the earlier, integrated and iterative use of DTs in a simulation-based engineering for the development of production systems. Seamless generation of and exchange between Model-, Software- and Hardware-in-the-Loop simulations is necessary. Feedback from simulation results will go into the design decisions after each iteration. The presented approach combines knowledge of the domain "production systems technology" together with the knowledge of the corresponding "product" using a so called graph-based design Language (GBDL). Its central data model, which represents the entire life cycle, results of an automatic translation step in a compiler. Since the execution of the GBDL can be repeated as often as desired with modified boundary conditions (e.g. through feedback), a design of experiment is made possible, whereby also unconventional solutions are considered. The novel concept aims at the following advantages: Consistent linking of all mechatronic domains through a data model (graph) from the project start, automatic design cycles exploring multiple variants for optimized product-production system combinations, automatic generation of simulation models starting with the planning phase, feedback from simulation-based optimization back into the data model.

关键词： Simulation-based Engineering graph-based design languages Virtual Commissioning Digital Twins Product-Production Model

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Automated evaluation of manufacturability and cost of steel tube constructions with graph-based design languages

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Procedia CIRP 2020年 88卷 485-490页

作者： Manuel Ramsaier Theresa Breckle Stephan Rudolph Axel Schumacher Ravensburg-Weingarten University of Applied Sciences Doggenriedstraße 88250 Weingarten Germany Ulm University of Applied Sciences Prittwitzstrasse 10 89075 Ulm Germany Stuttgart University Keplerstraße 7 70174 Stuttgart Germany University of Wuppertal Gaussstrasse 20 42119 Wuppertal Germany

In a market-driven economy, the availability of an evaluation of the manufacturability cost and economic efficiency right on from the early design phase is a competitive advantage. For this reason, a methodology is proposed in this work which enhances the planning capabilities and efficiency by automatic provision of steel constructions with manufacturing plans, cost calculation and evaluation in the early phase. To achieve this, the design process of steel structures is enhanced with aspects from the cost-domain and the manufacturing-domain. Furthermore, digital tools and methods of modern software engineering are applied to classical engineering design in order to handle increased product complexity and save design time in shortened product life-cycles. As a solution approach, so-called graph-based design languages are used and evaluated by means of steel construction examples.

关键词： manufacturing cost design cost graph-based design languages

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ABSTRACT PHYSICS REPRESENTATION OF A BALANCED TWO-WHEEL SCOOTER IN graph-based design languages

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Proceedings of the design Society: design Conference 2020年 1卷 1057-1066页

作者： M. Ramsaier R. Stetter M. Till S. Rudolph University of Applied Sciences Ravensburg-Weingarten Germany University of Stuttgart Germany

This paper presents a novel approach to include a holistic description of abstract physics in a digital engineering framework. Physical phenomena realize the numerous functions of technical systems and are an important link between rather abstract product functions and the concrete product geometry and material. Until now, a possibility to integrate the analysis and synthesis on this level of abstraction into a holistic engineering frameworks is not existing. The novel approach employs graph-based design languages using UML for this endeavour; the product example is a two-wheel scooter.

关键词： design methods design models design process physical effects graph-based design languages

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Novel approach for a holistic and completely digital represented product development process by using graph-based design languages 12

Novel approach for a holistic and completely digital represe...

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12th CIRP Conference on Intelligent Computation in Manufacturing Engineering (CIRP ICME)

作者： Zech, Andreas Stetter, Ralf Holder, Kevin Rudolph, Stephan Till, Markus Hsch Ravensburg Weingarten Doggenriedstr D-88250 Weingarten Germany ZF Friedrichshafen AG D-88046 Friedrichshafen Germany Univ Stuttgart Inst Flugzeugbau Pfaffenwaldring 31 D-70569 Stuttgart Germany

Scope of this research is a holistic, completely digital representation of product development processes. The proposed process is implemented by graph-based design languages based on diagrams of Unified-Modelling-Language. The unique approach allows an automatic generation and evaluation of multiple product variants and is illustrated by the development and evaluation of an automotive bonnet. One main research objective is the investigation of model-based integration of an optimization loop and adaptation of the synthesis process based on results of evaluation steps. It was possible to use results of multiple finite-element simulation for fully automated adaptation of inner structure of the automotive bonnet. (C) 2019 The Authors. Published by Elsevier B. V.

关键词： graph-based design languages UML requirements engineering geometry synthesis simulative analysis evaluation optimization

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From Manual to Machine-executable Model-based Systems Engineering via graph-based design languages 7th

From Manual to Machine-executable Model-based Systems Engine...

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7th International Conference on Model-Driven Engineering and Software Development (MODELSWARD)

作者： Walter, Benedikt Kaiser, Dennis Rudolph, Stephan Daimler AG Res & Dev MB Passenger Cars Kolumbusstr 19 21 D-71059 Sindelfingen Germany IILS mbH Albstr 6 D-72818 Trochtelfingen Germany Univ Stuttgart IFB Pfaffenwaldring 31 D-70569 Stuttgart Germany

ISBN: (纸本)9789897583582

Today, Model-based Systems Engineering (MBSE) is widely used in the successful design of complex systems in various industries. It intends to provide a complete description of the design process of complex systems in form of a V-Model or one of its various extensions thereof (extended V-Model). While already several formal languages like Unified Modelling Language (UML) and Systems Modelling Language (SysML) are used to formally describe the design process and behavioural aspects of the design as well, models in UM- or SysML are still mostly assembled and connected manually. Instead, graph-based design languages based on UML make use of the digital representation of the design process with the additional benefit of a repeatable execution encoded in an activity diagram within a rule set. This allows for a seamless transformation of a formerly mainly manual MBSE-approach towards a fully automated, machine-executable MBSE approach. The article will focus on the impact of graph-based design on that transition from classical MBSE towards machine-executable MBSE. We show this with the example of an automotive dashboard.

关键词： graph-based design languages V-Model Model-based Systems Engineering Requirements-driven Engineering Executable Model Digital Product design

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Novel approach for a holistic and completely digital represented product development process by using graph-based design languages

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Procedia CIRP 2019年 79卷 568-573页

作者： Andreas Zech Ralf Stetter Kevin Holder Stephan Rudolph Markus Till Hochschule Ravensburg-Weingarten Doggenriedstraße 88250 Weingarten Germany ZF Friedrichshafen AG 88046 Friedrichshafen Germany Universität Stuttgart Institut für Flugzeugbau Pfaffenwaldring 31 70569 Stuttgart Germany

关键词： graph-based design languages UML requirements engineering geometry synthesis simulative analysis evaluation optimization

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Automated pipe design in 3D using a multi-objective toolchain for efficient decision-making

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JOURNAL OF COMPUTATIONAL design AND ENGINEERING 2024年第5期11卷 77-98页

作者： Neumaier, Moritz Kranemann, Stefan Kazmeier, Bernd Rudolph, Stephan Univ Stuttgart Inst Aircraft Design D-70569 Stuttgart Germany Airbus Operat GmbH Mech Syst Installat D-21129 Hamburg Germany

Pipe design in 3D is typically characterized by competing objectives, since the different design objectives, such as the reduction of length, weight, number of bends, manufacturing cost, and overall angle sum, are examples for such competing design goals, where one goal is often at the expense of the other. The origin of these competing design goals lies in the highly coupled problems of finding a permissible and collision-free pipe path in a complex 3D geometry and the physical properties of the path found. Because of the complex physics and geometry, these couplings are highly non-linear and mostly accessible via simulation only. The underlying pipe design optimization problem can thus not be solved explicitly and is tackled instead with a multi-disciplinary search procedure. Since the trade-offs between different competing evaluation objectives are often not known in advance, an automated design space exploration can be performed to generate different pipe designs, leading to well-informed design decisions by human experts. Such a design space exploration is shown and discussed using the pipework in a mounting rack in an Airbus A320 main landing gear bay. A total of 144 valid designs are generated, out of which the best in each criteria and the pareto-optimal solutions are automatically selected. Compared to the manually created Airbus A320 series solution, up to $10.4\%$ of the pipe length or up to $16.9\%$ of the bends can be saved using the same fixings and connection points, demonstrating both the feasibility and the industrial applicability of the automated toolchain. graphical Abstract

关键词： automated pipe design generative design hydraulic pipe design design space exploration model-based systems engineering graph-based design languages

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Digital Integrated design and Assembly Planning Processes for Sports Vehicles Using the Example of a Skateboard

VEHICLES

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VEHICLES 2025年第1期7卷 22-22页

作者： Schuchter, Timo Till, Markus Stetter, Ralf Rudolph, Stephan Ravensburg Weingarten Univ RWU Dept Mech Engn D-88250 Weingarten Germany Univ Stuttgart Inst Aircraft Design D-70569 Stuttgart Germany

The current product and assembly processes of system development in the vehicle industry are characterised by a multitude of different model formats, a relatively low level of data integration, and an unsatisfactory management of information. This article presents an integrated design and assembly planning process which applies several model-to-model (M2M) transformations in order to ensure a seamless transition from product requirements to an assembly system layout and design. The digital process employs a framework based on graph-based design languages (GBDLs) and achieves an integration in a model-based systems engineering (MBSE) industrial context. The underlying hypothesis that this seamless transition is possible is tested on the basis of the product and assembly system development of a sports vehicle. In this article, a skateboard is used for detailing and explaining the different modelling perspectives throughout the engineering and assembly process of this product. Due to a conscious application of GBDLs in an MBSE framework, it is possible to achieve a continuous sequence of M2M transformations which guarantees a maximum level of information integrity. These two aspects are cornerstones for a future integrated design automation of a product and its assembly system. It is important to note that the presented approach is universal and can be used in the production of components for the automotive industry, entire vehicles, and their assembly.

关键词： graph-based design languages assembly planning layout planning assembly system development

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