A System Approach to Simulation-Based Design Under Uncertainty, Through Best in Class Simulation Process Integration and Design Optimization

2004 ◽  
Author(s):  
Nick Tzannetakis ◽  
Stijn Donders ◽  
Joost Van de Peer ◽  
Paul Weal
Keyword(s):  
Six Sigma ◽  
Process Integration ◽  
Real Life ◽  
Product Development Process ◽  
Design Parameters ◽  
Manufacturing Companies ◽  
Development Costs ◽  
Simulation Based Design ◽  
Key Factor ◽  
Reliability And Robustness

The importance of design robustness and reliability is a well-established notion and practice in today’s industry. Manufacturing companies strive to achieve Six-Sigma quality measures. While Virtual Prototyping is a key-factor in accelerating the product development process while reducing development costs, it has not contributed in the quest for improved product reliability and robustness performance since it is based on deterministic approaches. This paper provides a systematic approach to design for six-sigma simultaneously addressing variability and uncertainty present in real life on most design parameters. An example from the automotive industry illustrates the methodologies.

Combining Case Based Reasoning and Shape Matching Based on Clearance Analyzes to Support the Reuse of Components

2012 ◽  
Author(s):  
Joel Johansson
Keyword(s):  
Process Design ◽  
Lead Time ◽  
Shape Matching ◽  
Product Development Process ◽  
Prototype System ◽  
Case Based Reasoning ◽  
Manufacturing Companies ◽  
Key Factor ◽  
Product Specifications ◽  
Case Based

For manufacturing companies it is important to develop and produce products that meet requirements from customers and investors. One key factor in meeting these requirements is the efficiency of the product development process. Design automation is a powerful tool to increase efficiency in that process resulting in shortened lead-time, improved product performance, and ultimately decreased cost. Further, automation is beneficial as it increases the ability to adapt products to new product specifications, which is critical to some categories of products. In this paper the retrieval and evaluation processes of the Case Based Reasoning (CBR) method are extended to include shape matching. This enhanced CBR method supports the reuse of existing components when introducing new variants of variant-rich products. The matching method is based on clearance analyzes and is performed during the retrieval of cases and supports the evaluation of suggestions. The method is described along with a prototype-system where the process of selecting components for roof racks for cars is targeted for automation. One specific component of the roof rack is targeted, namely a rubber pad used in the interface between the car roof and the rack.

Logistics Costs Behavior and Management in the Auto Industry

2015 ◽  
Vol 31 (4) ◽  
pp. 389-408 ◽  
Author(s):  
Marcela M. Porporato
Keyword(s):  
Real Life ◽  
Systems Design ◽  
Management Control ◽  
Data Availability ◽  
Manufacturing Companies ◽  
Bottom Line ◽  
Related Data ◽  
Profitability Analysis ◽  
Confidentiality Agreement ◽  
Cost Behavior

ABSTRACT This case, based on a real-life situation of how logistics costs function in daily operations, aims to provide students with the opportunity to understand how logistics costs are calculated and how the inter-organizational nature of these costs affects the profitability of two companies. The case hinges on understanding cost behavior (fixed and variable) and on management control systems design. Although logistics costs represent a small fraction of total costs in manufacturing companies, they can negatively affect the bottom line if left unattended. Students are presented with data relating to a three-year project in the automotive industry that shows that the project has been experiencing a sustained increase in costs that has eroded its profit margin. While it appears that logistics costs are the problem, it cannot be verified until the contracts are studied. In addition, the financial- and contract-related data provided are sufficient to extend the profitability analysis to the provider of logistics services. This case is suitable for management accounting courses at the master's or advanced undergraduate level; it has been tested and well received by students who want to gain a greater understanding of logistics costs—their nature, behavior, possible containment strategies, and inter-organizational effects. Data Availability: Some of the data are from public sources, but the logistics contracts and cost schedules are private; the confidentiality agreement with the two companies requires masking certain details and modifying the numeric data.

From IMS and six sigma toward TQM: an empirical study from Serbia

2015 ◽  
Vol 27 (3) ◽  
pp. 341-355 ◽  
Author(s):  
Vidosav Majstorovic ◽  
Tatjana V. Sibalija
Keyword(s):  
Quality Management ◽  
Six Sigma ◽  
Management Practice ◽  
Current Status ◽  
Quality Engineering ◽  
Manufacturing Companies ◽  
Total Quality ◽  
Content Type ◽  
Dmaic Method ◽  
Comprehensive Study

Purpose – The purpose of this paper is to present the current status of a quality management practice in Serbia, in terms of the development and application of integrated managements systems (IMS), and research and implementation of Six Sigma and the related techniques. Design/methodology/approach – Two main aspects of total quality management (TQM) have been considered: institutional (organisational or strategic) aspect that corresponds to standardised management systems and their integration, and technical (quality engineering) aspect whose main contributor is Six Sigma. The findings of a comprehensive study on IMS implementation in Serbia have been presented, based on the results of a questionnaire that was sent to 54 organisations during 2013. Also, the significant technical improvements and tangible benefits of a recently conducted Six Sigma project were shown, including the application of the advanced quality engineering techniques within DMAIC method. Findings – Good QM practice in Serbia is improving, both in terms of the organisational (IMS) and technical (Six Sigma) aspect, that server as a good basis for the adoption of TQM in manufacturing companies from various sectors. It could be anticipated that these results will facilitate the adoption of an overall TQM culture in Serbia and leverage its future sustainability. Originality/value – This paper offers key insights into IMS and Six Sigma implementation in Serbia. This could encourage manufacturing organisations in developing countries to adopt IMS and Six Sigma, in order to boost the overall TQM culture and gain a competitive advantage.

Barriers in green lean six sigma product development process: an ISM approach

2016 ◽  
pp. 1-17 ◽  
Author(s):  
Sanjay Kumar ◽  
Sunil Luthra ◽  
Kannan Govindan ◽  
Naveen Kumar ◽  
Abid Haleem
Keyword(s):  
Product Development ◽  
Six Sigma ◽  
Development Process ◽  
Lean Six Sigma ◽  
Product Development Process

scholarly journals Dynamic Response Optimization of Complex Multibody Systems in a Penalty Formulation Using Adjoint Sensitivity

2015 ◽  
Vol 10 (3) ◽  
Author(s):  
Yitao Zhu ◽  
Daniel Dopico ◽  
Corina Sandu ◽  
Adrian Sandu
Keyword(s):  
Sensitivity Analysis ◽  
Multibody Dynamics ◽  
Multibody Systems ◽  
Real Life ◽  
Design Parameters ◽  
Vehicle Model ◽  
Adjoint Sensitivity ◽  
Penalty Formulation ◽  
Sensitivity Approach ◽  
Dynamic Performance Analysis

Multibody dynamics simulations are currently widely accepted as valuable means for dynamic performance analysis of mechanical systems. The evolution of theoretical and computational aspects of the multibody dynamics discipline makes it conducive these days for other types of applications, in addition to pure simulations. One very important such application is design optimization for multibody systems. In this paper, we focus on gradient-based optimization in order to find local minima. Gradients are calculated efficiently via adjoint sensitivity analysis techniques. Current approaches have limitations in terms of efficiently performing sensitivity analysis for complex systems with respect to multiple design parameters. To improve the state of the art, the adjoint sensitivity approach of multibody systems in the context of the penalty formulation is developed in this study. The new theory developed is then demonstrated on one academic case study, a five-bar mechanism, and on one real-life system, a 14 degree of freedom (DOF) vehicle model. The five-bar mechanism is used to validate the sensitivity approach derived in this paper. The full vehicle model is used to demonstrate the capability of the new approach developed to perform sensitivity analysis and optimization for large and complex multibody systems with respect to multiple design parameters with high efficiency.

scholarly journals Sustainable education in Russia

2020 ◽  
Vol 208 ◽  
pp. 09032
Author(s):  
Yuliya Masalova
Keyword(s):  
Sustainable Development ◽  
Professional Education ◽  
Traditional Approach ◽  
Real Life ◽  
Modern World ◽  
Russian Higher Education ◽  
Key Factor ◽  
Integral Element ◽  
Higher Professional Education

In the modern world, many countries recognize that education should act in the interests and for the benefit of the ideas of sustainable development. At the same time, sustainable development itself becomes an integral element of quality education and its key factor. In Russia, the “national strategy of education for sustainable development” has been formed, which provides for a reorientation from ensuring that students have certain knowledge to the ability to analyse real problems and find possible solutions for them. At the same time, the traditional approach to teaching based on the study of specific subjects remains, but it is important to ensure that each student is able to carry out an interdisciplinary analysis of real-life situations. Currently, a project on “Key areas of development of Russian education for achieving the goals and objectives of sustainable development in the education system” until 2035 has been developed and published, which contains indicators that allow us to assess the achievement of the goals set out in it. However, this document hardly presents the level of higher professional education and its contribution to sustainable development. The article will examine the role of Russian higher education in the concept of sustainable development.

scholarly journals The Concept of Slack and the Comprehensive Opportunity and Lost Opportunity Control Model

2019 ◽  
Vol 14 (8) ◽  
pp. 95
Author(s):  
Akira Nishimura
Keyword(s):  
Risk Management ◽  
Business Strategy ◽  
Control Model ◽  
Financial Resource ◽  
Enterprise Strategy ◽  
Manufacturing Companies ◽  
Financial Slack ◽  
Key Factor ◽  
Exploitation And Exploration ◽  
Lost Opportunity

Enterprise slack, defined as undistributed profit and earned surplus, is a key factor to consider when developing enterprise strategy based on opportunity and risk management. Slack also provides an unrestricted, but indispensable, financial resource for firms to carry out improvement and innovation, exploitation and exploration, and financial activities according to their strategy. In the comprehensive opportunity and lost opportunity control model previously developed by the author (Nishimura, 2015; 2016), slack fulfills its function effectively. Therefore, to make the model more practicable and functional, this paper will examine the substance and functions of slack more definitely by analyzing financial slack and its relationship with business strategy in five innovative manufacturing companies in Japan.

scholarly journals Early Robust Design—Its Effect on Parameter and Tolerance Optimization

2021 ◽  
Vol 11 (20) ◽  
pp. 9407
Author(s):  
Stefan Goetz ◽  
Martin Roth ◽  
Benjamin Schleich
Keyword(s):  
Product Development ◽  
Robust Design ◽  
Product Development Process ◽  
Design Parameters ◽  
Concept Design ◽  
Design Decisions ◽  
Dynamic Markets ◽  
Tolerance Optimization ◽  
Qualitative Approaches ◽  
Design Activities

The development of complex products with high quality in dynamic markets requires appropriate robust design and tolerancing workflows supporting the entire product development process. Despite the large number of methods and tools available for designers and tolerance engineers, there are hardly any consistent approaches that are applicable throughout all development stages. This is mainly due to the break between the primarily qualitative approaches for the concept stage and the quantitative parameter and tolerance design activities in subsequent stages. Motivated by this, this paper bridges the gap between these two different views by contrasting the used terminology and methods. Moreover, it studies the effects of early robust design decisions with a focus on Suh’s Axiomatic Design axioms on later parameter and tolerance optimization. Since most robust design activities in concept design can be ascribed to these axioms, this allows reliable statements about the specific benefits of early robust design decisions on the entire process considering variation in product development for the first time. The presented effects on the optimization of nominal design parameters and their tolerance values are shown by means of a case study based on ski bindings.

scholarly journals THE PRACTICE OF CONTINUOUS IMPROVEMENT BEHAVIOURS IN MANUFACTURING COMPANIES WITH ISO 9001

2021 ◽  
Vol 6 (1) ◽  
pp. 147-155
Author(s):  
Vesna Sesar ◽  
◽  
Anica Hunjet
Keyword(s):  
Total Quality Management ◽  
Continuous Improvement ◽  
Six Sigma ◽  
Evolutionary Model ◽  
Iso 9001 ◽  
Manufacturing Companies ◽  
Total Quality ◽  
Business Results ◽  
Development Level ◽  
Long Run

Continuous improvement gained much attention in the literature as one of the principles in total quality management and practice under methodologies such as Lean or Six Sigma. Continuous improvement in organizations represents a comprehensive process that includes involvement of all people on all organizational levels to make improvements throughout the whole organization. Therefore, building and sustaining the organizational CI capability through practicing the CI behaviours leads to achieving better efficiency, effectiveness and business results of the organization. Also applying CI behaviours leads to change in organizational culture which is, in the long run, oriented toward making every day continuous improvements. The purpose of this paper is to present which CI behaviours can be developed in organization and measured according to the Bessant's evolutionary model of continuous improvement behaviour. Also, the goal of the research is to present based on the conducted research, the state of CI practice regarding adopted CI behaviours which will be presented as the development level of CI behaviours that researched manufacturing companies in Croatia with ISO 9001 certificate, have. Keywords: continuous improvement behaviours, kaizen, model

Model of the Performance of a Roadway Safety Fence and Its Use for Design

1998 ◽  
Vol 1647 (1) ◽  
pp. 122-129 ◽  
Author(s):  
Mark B. Bateman ◽  
Ian C. Howard ◽  
Andrew R. Johnson ◽  
John M. Walton
Keyword(s):  
Design Parameters ◽  
Vehicle Speed ◽  
Engineering Systems ◽  
Collapse Mechanisms ◽  
Development Costs ◽  
Roadway Safety ◽  
Sensitivity Studies ◽  
Complex Engineering ◽  
Alternative Designs ◽  
The Impact

The optimization of roadway safety design by experimental means is expensive and time consuming. Computer simulation of such complex engineering systems improves understanding of how and why the system behaves as it does, aids in decision making, and reduces development costs and time involved. The simulation presented is based on a computer model developed from a study of the results of full-scale experiments of impact on the Brifen wire-rope safety fence (WRSF). The code comprises a dynamic vehicle model and a quasi-static fence model interacting in time through the important collapse mechanisms of the system. The principles governing them are described and their inclusion is validated by demonstrating good correlation between the predictions of the simulation and the experimental test data. Sensitivity studies show that the performance of a WRSF is particularly sensitive to the impact conditions of vehicle speed and angle and the design parameters offence height, post spacing, post strength, and rope pre-tension. The sensitivity work is extended to show that for fences installed with a low rope pre-tension, performance may not be significantly impaired if rope pre-tension is not maintained. However, significant gains in fence performance may be made should a fence be installed and maintained with a high rope pre-tension. The use of the simulation in assessing cost-effectiveness of alternative designs in achieving a target performance is also demonstrated.

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