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Optimization of Productivity and Worker Well-Being by Using a Multi-Objective Optimization Framework
University of Skövde, School of Engineering Science. University of Skövde, Virtual Engineering Research Environment. (User Centred Product Design (UCPD))ORCID iD: 0000-0002-3129-7076
University of Skövde, School of Engineering Science. University of Skövde, Virtual Engineering Research Environment. (User Centred Product Design (UCPD))ORCID iD: 0000-0003-4596-3815
Advanced Manufacturing Engineering, Volvo Car Corporation, Göteborg, Sweden.ORCID iD: 0000-0003-2138-937X
University of Skövde, School of Engineering Science. University of Skövde, Virtual Engineering Research Environment. (User Centred Product Design (UCPD))ORCID iD: 0000-0003-0746-9816
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2021 (English)In: IISE Transactions on Occupational Ergonomics and Human Factors, ISSN 2472-5838, Vol. 9, no 3-4, p. 143-153Article in journal (Refereed) Published
Abstract [en]

OCCUPATIONAL APPLICATIONS

Worker well-being and overall system performance are important elements in the design of production lines. However, studies of industry practice show that current design tools are unable to consider concurrently both productivity aspects (e.g., line balancing and cycle time) and worker well-being related aspects (e.g., the risk of musculoskeletal disorders). Current practice also fails to account for anthropometric diversity in the workforce and does not use the potential of multi-objective simulation-based optimization techniques. Accordingly, a framework consisting of a workflow and a digital tool was designed to assist in the proactive design of workstations to accommodate worker well-being and productivity. This framework uses state-of-the-art optimization techniques to make it easier and quicker for designers to find successful workplace design solutions. A case study to demonstrate the framework is provided

TECHNICAL ABSTRACT

Rationale: Simulation technologies are used widely in industry as they enable efficient creation, testing, and optimization of the design of products and production systems in virtual worlds. Simulations of productivity and ergonomics help companies to find optimized solutions that maintain profitability, output, quality, and worker well-being. However, these two types of simulations are typically carried out using separate tools, by persons with different roles, with different objectives. Silo effects can result, leading to slow development processes and suboptimal solutions.

Purpose: This research is related to the realization of a framework that enables the concurrent optimization of worker well-being and productivity. The framework demonstrates how digital human modeling can contribute to Ergonomics 4.0 and support a human factors centered approach in Industry 4.0. The framework also facilitates consideration of anthropometric diversity in the user group.

Methods: Design and creation methodology was used to create a framework that was applied to a case study, formulated together with industry partners, to demonstrate the functionality of the noted framework.

Results: The framework workflow has three parts: (1) Problem definition and creation of the optimization model; (2) Optimization process; and (3) Presentation and selection of results. The case study shows how the framework was used to find a workstation design optimized for both productivity and worker well-being for a diverse group of workers.

Conclusions: The framework presented allows for multi-objective optimizations of both worker well-being and productivity and was successfully applied in a welding gun use case.

Place, publisher, year, edition, pages
Taylor & Francis, 2021. Vol. 9, no 3-4, p. 143-153
Keywords [en]
ergonomics, digital human modeling, productivity, simulation, optimization
National Category
Production Engineering, Human Work Science and Ergonomics
Research subject
User Centred Product Design; Production and Automation Engineering; VF-KDO
Identifiers
URN: urn:nbn:se:his:diva-20699DOI: 10.1080/24725838.2021.1997834ISI: 000716285800001PubMedID: 34724884Scopus ID: 2-s2.0-85118760617OAI: oai:DiVA.org:his-20699DiVA, id: diva2:1611513
Part of project
Synergy Virtual Ergonomics (SVE), Knowledge FoundationMOSIM – Modular Simulation of Natural Human Motions, VinnovaVirtual factories with knowledge-driven optimization (VF-KDO), Knowledge Foundation
Funder
Vinnova
Note

CC BY 4.0

CONTACT Aitor Iriondo Pascual aitor.iriondo.pascual@his.se

Published online: 09 Nov 2021

This work has received support from ITEA3/Vinnova in the project Modular Simulation of Natural Human Motions (MOSIM), and from the Knowledge Foundation and the associated INFINIT research environment at the University of Skövde, within the Virtual Factories–Knowledge-Driven Optimization (VF-KDO) research profile and the Synergy Virtual Ergonomics (SVE) project, and from the participating organizations. This support is gratefully acknowledged.

10.1080/24725838.2021.1997834

Available from: 2021-11-15 Created: 2021-11-15 Last updated: 2024-06-19Bibliographically approved
In thesis
1. Simulation-based multi-objective optimization of productivity and worker well-being
Open this publication in new window or tab >>Simulation-based multi-objective optimization of productivity and worker well-being
2023 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

In industry, simulation software is used to simulate production, making it possible to predict events in production, calculate times and plan production, even in the early phases of the production development process. Software known as digital human modelling (DHM) tools can also be used to simulate humans working in production. When simulating digital human models, ergonomics evaluations can be carried out to assess whether workstation designs offer appropriate ergonomic conditions for the workers. However, simulations performed to predict and plan production are usually done separately from the human simulations performed to evaluate ergonomics. This can lead to suboptimal solutions in which a factory is optimized to improve either productivity or ergonomics. This thesis outlines the hypothesis that more optimal solutions for workstation design, layout and line balancing can be obtained in simulations by optimizing productivity and ergonomic factors simultaneously instead of considering them separately. Hence, the aim is to carry out research on the development of a simulation-based multi-objective optimization method for productivity and ergonomic factors and to realize the method as a software tool in order to test and communicate it. From an application and societal-impact perspective, the overall objective is to offer a new approach for designing production systems that focuses on both over-all system performance and the well-being of workers, reduces the effort of engineers and helps industry create more productive and sustainable workspaces.

Abstract [sv]

Simuleringsverktyg används i industrin för att simulera produktion. Det gör det möjligt att förutsäga händelser, uppskatta tider och planera produktionen, även i tidiga stadier av produktionsutvecklingsprocessen. På motsvarande vis används ergonomisimuleringsverktyg för att simulera människor som arbetar i produktionen. Ergonomisimulering kan till exempel utföras för att bedöma om utformningen av arbetsstationen erbjuder lämpliga ergonomiska förhållanden för arbetarna. Emellertid görs produktionssimuleringar vanligtvis separat från ergonomisimuleringar. Det kan leda till bristfälliga lösningar där en fabrik är optimerad för att förbättra antingen produktivitet eller ergonomi. Denna avhandling utgår från hypotesen att mer optimala lösningar för arbetsstationsutformning, layout och linje-balansering kan uppnås i simuleringar genom att samtidigt optimera produktivitetsfaktorer och ergonomiska faktorer istället för att beakta dem separat. Målet är därför att utforska utvecklingen av en simulerings- och flermålsbaserad optimeringsmetod för produktivitetsfaktorer och ergonomiska faktorer och att realisera metoden som ett mjukvaruverktyg för att testa och beskriva den. Ur ett tillämpnings- och samhällspåverkansperspektiv är det övergripande målet att erbjuda ett nytt tillvägagångssätt för att utforma produktionssystem som fokuserar på både systemprestanda och människans välbefinnande, som stödjer ingenjörer i deras dagliga arbete för att hitta goda lösningar, och hjälper industrin att skapa mer produktiva och hållbara arbetsplatser.

Place, publisher, year, edition, pages
Skövde: University of Skövde, 2023. p. xii, 79, [125]
Series
Dissertation Series ; 56
Keywords
Ergonomics, Productivity, Optimization, Simulation
National Category
Production Engineering, Human Work Science and Ergonomics
Research subject
User Centred Product Design; VF-KDO
Identifiers
urn:nbn:se:his:diva-23360 (URN)978-91-987907-0-2 (ISBN)
Public defence
2023-12-21, ASSAR Industrial Innovation Arena (stora scenen/main stage) & online, Skövde, 09:00 (English)
Opponent
Supervisors
Available from: 2023-11-20 Created: 2023-11-14 Last updated: 2024-08-14Bibliographically approved

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Iriondo Pascual, AitorHögberg, DanLämkull, DanPerez Luque, EstelaSyberfeldt, AnnaHanson, Lars

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