ApOL-Application Oriented Workload Model for Digital Human Models for the Development of Human-Machine Systems

Sänger J, Wirth L, Yao Z, Scherb D, Miehling J, Wartzack S, Weidner R, Lindenmann A, Matthiesen S (2023)

Publication Language: English

Publication Type: Journal article, Original article

Publication year: 2023

Journal

MDPI Machines MDPI

Book Volume: 11

Journal Issue: 9

DOI: 10.3390/machines11090869

Open Access Link: https://www.mdpi.com/2075-1702/11/9/869

Abstract

Since musculoskeletal disorders are one of the most common work-related diseases for assemblers and machine operators, it is crucial to find new ways to alleviate the physical load on workers. Support systems such as exoskeletons or handheld power tools are promising technology to reduce the physical load on the humans. The development of such systems requires consideration of the interactions between human and technical systems. The physical relief effect of the exoskeleton can be demonstrated in experimental studies or by simulation with the digital human model (DHM). For the digital development of these support systems, an application-oriented representation of the workload is necessary. To facilitate digital development, an application-oriented workload model (ApOL model) of an overhead working task is presented. The ApOL model determines the load (forces, torques) onto the DHM during an overhead screw-in task using a cordless screwdriver, based on experimental data. The ApOL model is verified by comparing the simulated results to the calculated values from a mathematical model, using experimental data from three participants. The comparison demonstrates successful verification, with a maximum relative mean-absolute-error (rMAE) of the relevant load components at 11.4%. The presented ApOL model can be utilized to assess the impact of cordless screwdriver design on the human workload and facilitate a strain-based design approach for support systems e.g., exoskeletons.

Authors with CRIS profile

David Scherb Chair of Engineering Design Jörg Miehling Chair of Engineering Design Sandro Wartzack Chair of Engineering Design

Involved external institutions

Karlsruhe Institute of Technology (KIT) DE Germany (DE) Leopold-Franzens-Universität Innsbruck / University of Innsbruck AT Austria (AT) Helmut-Schmidt-Universität - Universität der Bundeswehr Hamburg DE Germany (DE)

How to cite

APA:

Sänger, J., Wirth, L., Yao, Z., Scherb, D., Miehling, J., Wartzack, S.,... Matthiesen, S. (2023). ApOL-Application Oriented Workload Model for Digital Human Models for the Development of Human-Machine Systems. MDPI Machines, 11(9). https://doi.org/10.3390/machines11090869

MLA:

Sänger, Johannes, et al. "ApOL-Application Oriented Workload Model for Digital Human Models for the Development of Human-Machine Systems." MDPI Machines 11.9 (2023).

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