| 3011. |
- Högberg, Dan, et al.
(författare)
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A basic step towards increased accommodation level accuracy when using DHM tools
- 2011
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Ingår i: Proceedings of DHM, First International Symposium on Digital Human Modeling. - : Université Claude Bernard Lyon. - 9782953951509 ; , s. 1-6
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Konferensbidrag (refereegranskat)abstract
- The paper addresses the need to consider anthropometric diversity in design and suggests a basic approach for the simultaneous consideration of variance in two key dimensions. This as a basic step from the common, but in many cases poor, approach to use univariate percentile data in design. The bivariate method described can be applied when utilising DHM tools for design in that key dimension values for extreme but likely anthropometric measurement combinations are calculated and entered as input data when representative manikins are defined. The mathematical procedure is described and the outcome of the method is compared to a typical percentile based approach, indicating more accurate accommodation levels being reached by the proposed method. The method is to be seen as a simple method to be used for basic design problems where variance in few anthropometric dimensions are to be considered simultaneously, and not as an alternative for more advanced multivariate methods. The paper takes a pragmatic standpoint, directing its message towards practitioners using DHM tools for design purposes.
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| 3012. |
- Högberg, Dan, et al.
(författare)
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A pragmatic approach to define anthropometric boundary manikins for multiple populations
- 2012
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Ingår i: NES2012 Proceedings, Saltsjöbaden, Sweden, August 19-22, 2012. - Stockholm : KTH Royal Institute of Technology. - 9789163711503
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Konferensbidrag (refereegranskat)abstract
- The paper addresses the call for methods that can assist designers to consider anthropometric diversity when designing products or workstations, and hence formulate more sustainable design solutions. A basic method for the definition of boundary manikins for bivariate design problems and combined populations is described, exemplified and evaluated. The method can be used for defining virtual test groups when using digital human modelling tools for evaluating anthropometry related aspects of human-product interfaces at early design phases. It can also be used to indentify persons with certain anthropometry to build up test groups for performing physical tests.
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| 3013. |
- Högberg, Dan, 1965-, et al.
(författare)
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Accommodation levels for ellipsoid versus cuboid defined boundary cases
- 2015
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Ingår i: Procedia Manufacturing. - : Elsevier. - 2351-9789. ; 3, s. 3702-3708
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Tidskriftsartikel (refereegranskat)abstract
- The boundary case method is established for the representation and consideration of anthropometric diversity in design tasks with certain characteristics. Sometime boundary cases are defined separately for two distributions, e.g. for females and males, which may lead to a situation where some boundary cases will be redundant in that they are located within the joint distribution rather than on the joint boundary. This paper describes and illustrates a method for automatic identification of redundant boundary cases that are located within two three-dimensional overlapping distributions.Practitioner Summary: The paper describes a pragmatic way to focus the design work on users with specific limiting body measurement combinations that can be used to obtain design data or be used to describe appropriate test persons or digital human models for design problems where the boundary case method is suitable.
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| 3014. |
- Högberg, Dan, 1965-, et al.
(författare)
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Basic Method for Handling Trivariate Normal Distributions in Case Definition for Design and Human Simulation
- 2014
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Ingår i: Advances in Applied Digital Human Modeling. - : AHFE Conference. - 9781495120947 ; , s. 27-40
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Konferensbidrag (refereegranskat)abstract
- The paper describes a basic approach for the establishment of representative test persons when performing accommodation analyses and wanting to simultaneously consider normal variation in three variables. The main application is for defining a number of different manikins when performing ergonomics simulations for boundary case based accommodation analyses using digital human modelling tools. The method is also applicable when wanting to select representative people to be involved in user trials or to get direct design data. One objective is that the proposed method shall support inclusive design in that it is easy to adopt by non-experts in multivariate accommodation analyses, and accordingly reduce the amount of unsuitable univariate accommodation analyses. The paper introduces the reader to the area of interest, making links to previous research and current problems. The approach for the development of the basic method is explained. The confidence ellipse method is used for defining appropriate boundary manikins according to three selected key variables and desired accommodation level. The paper includes two examples that illustrate the method and compare the method to an alternative method.
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| 3015. |
- Högberg, Dan, et al.
(författare)
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Computer manikin family usage for human accomodation
- 2003
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Ingår i: Mind and Body in a Technological World. - 9979608617 ; , s. 184-188
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Konferensbidrag (refereegranskat)abstract
- Commonly percentiles are used to define users’ bodily dimensions. The percentile approach is however not suitable for multivariate problems such as the design of car cockpits, i.e. where a range of body segment dimensions affects the design. An alternative way is to use a set, afamily, of manikins for evaluation that better represents human variety. The aim of this study was to compare seat and steering wheel adjustment ranges obtained when using manikin families or a percentile approach as the user representation in human simulation software. Results obtained indicate that a more elaborate and careful consideration of users can be achieved when using a manikin family approach for human accommodation compared to apercentile approach.
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| 3016. |
- Högberg, Dan, 1965-, et al.
(författare)
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Concept of Formalized Test Procedure for Proactive Assessment of Ergonomic Value by Digital Human Modelling Tools in Lean Product Development
- 2018
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Ingår i: Advances in Human Factors in Simulation and Modeling. - Cham, Switzerland : Springer. - 9783319605906 - 9783319605913 ; , s. 425-436
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Konferensbidrag (refereegranskat)abstract
- A concept of a formalized test procedure for proactive assessment of ergonomic value by digital human modelling (DHM) tools in lean product development (LPD) is proposed and described. The objective of the formalized procedure is to integrate the utilization of DHM tools in LPD and to support the delivery of ergonomic value and reduce waste in product and production development processes. A design process model is illustrated and described, and examples are given of how to specify and work with ergonomic value in the process.
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| 3017. |
- Högberg, Dan, 1965-, et al.
(författare)
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Creating and shaping the DHM tool IMMA for ergonomic product and production design
- 2016
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Ingår i: International Journal of the Digital Human. - : InderScience Publishers. - 2046-3375 .- 2046-3383. ; 1:2, s. 132-152
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Tidskriftsartikel (refereegranskat)abstract
- The history, status and outlook of the research and development actions associated with the creation of the digital human modelling tool intelligently moving manikins (IMMA) are described. The underlying fundamental concepts are described and research and development results so far are illustrated or referred to. Two case studies illustrating use of IMMA on industry-based problems are described. The paper also covers reflections on conceptions for prospective DHM tool developments from a general perspective, relating to areas of ergonomics and design methodology, as well as describing some of the plans for further developments and applications of the IMMA tool. These may be of assistance when identifying challenges for future research and development of DHM tools that are used in product and production design processes in industry.
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| 3018. |
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| 3019. |
- Högberg, Dan, 1965-, et al.
(författare)
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DHM Based Test Procedure Concept for Proactive Ergonomics Assessments in the Vehicle Interior Design Process
- 2018
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Ingår i: Proceedings of the 20th Congress of the International Ergonomics Association (IEA 2018). - Cham, Switzerland : Springer. - 9783319960760 - 9783319960777 ; , s. 314-323
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Konferensbidrag (refereegranskat)abstract
- The development of a digital human modelling (DHM) based test procedure concept for the assessment of physical ergonomics conditions in virtual phases of the vehicle interior design process is illustrated and discussed. The objective of the test procedure is to be a valuable tool for ergonomic evaluations and decision support along the design process, so that ergonomic issues can be dealt with in an efficient, objective and proactive manner. The test procedure is devised to support companies in having stable and objective processes, in accordance with lean product development (LPD) philosophies. The overall structure and fundamental functionality of the test procedure concept is explained by a simplified use case, utilizing the DHM tool IPS IMMA to: define manikin families and manikin tasks; predict manikin motions; and visualize simulations and ergonomics evaluation outcomes.
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| 3020. |
- Högberg, Dan
(författare)
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Digital human modelling for user-centred vehicle design and anthropometric analysis
- 2009
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Ingår i: International Journal of Vehicle Design. - : InderScience Publishers. - 0143-3369 .- 1741-5314. ; 51:3/4, s. 306-323
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Tidskriftsartikel (refereegranskat)abstract
- Digital human modelling (DHM) is discussed as a design tool in the context of user-centred design, with a focus on DHM usage for anthropometric analysis in occupant packaging tasks in the vehicle interior design process. References are made to concepts of inclusive design, user-centred design, design cognition and design methodology. Examples are presented to illustrate how DHM can be of great use to the vehicle designer, but also to show some of the difficulties involved. This includes the complexity in considering anthropometric variation of the targeted product users in multivariate design problems, such as the design of vehicle interiors and suggestions on how to deal with this difficulty in an industrial design setting. Overall, the paper takes a designer's view of DHM tools and illustrates how the tool can be of value in the design process, but also considers what implications this has on the functionality and usability of the tools.
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