Haptic Modeling of Finite Element Surfaces
نویسندگان
چکیده
Virtual prototyping has gained major importance in the development cycle of new products. The finite element method has mostly replaced real experiments performed on expensive solid models. To accomplish modeling tasks on the virtual models, a lot of software has been developed over the past years. However, most of such software packages do not focus on intuitive handling of the discretized components, but permit only complicated operations on isolated or a cumbersomely defined selection of various finite elements. In this paper we would like to present an approach which allows the user to touch and grab a finite element surface directly by using haptic input devices supporting six degrees of freedom. There, the user can modify the surface by dragging it with a virtual representation of the penlike handle. The presented application prevents perforation of close-by objects by repressing the movement of the input device using its force feedback capabilities. Additionally, a novel approach enables haptic rendering of the quality of a finite element mesh. Such intuitive steering allows the user to reduce time-consumption of development on basis of finite element meshes to a minimum, and it provides a serious alternative to CAD modeling techniques especially in early design stages.
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