Description
Due to ever-shorter product life cycles there is a strong need to validate ergonomic product properties at an early stage of the product development process.
A promising approach are simulations with multibody models of the human musculoskeletal system (musculoskeletal human models), which facilitate the computation of barely measurable biomechanical strains within the musculoskeletal system that arise due to external stress situations. However, since this technology originates from basic research in motion sciences it has not yet been satisfactorily integrated into the computer-aided process chain of product development.
The particular aim of the present dissertation is to establish data consistency between the CAD system as a central synthesis tool for product development and musculoskeletal multibody simulation systems, thus facilitating the use of musculoskeletal human models for the virtual evaluation of ergonomic product properties. In addition to a bidirectional coupling scheme of CAD and MKS data structures three novel types of CAD features are being developed that support the augmentation of product models with information on human-machine interaction. This semantically extended product model is the foundation of a simulation technique based on mathematical optimization for predicting physically consistent human postures and related biomechanical strain measures. These building blocks collectively yield an integrated software tool that enables the product developer to quantitatively analyze human-machine interactions in the immediate context of the geometric product concept.
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