The research describes the extension of the Axiomatic Design model to incorporate the aesthetic design as the customer requirement. It also proposes a computational model to support the formalization of aesthetic design in industrial products. The methodology takes into account the cognition process during the design generation and captures this behavior in a group theoretic structure. This approach leads to application of Axiomatic Design paradigm to the domain of the aesthetics. The proposed framework is implemented and validated by taking a design case of the consumer products.
Frontloading in product development supports the possibility to make important decisions as soon as possible. The dedication of virtual product development tools implicates cost savings by reduction of physical prototype testing. The present publication treats the potential of computer-aided design (CAD) in a specific application to offer changeable, quick and efficient development. The application of the developed methods and tools is shown for stone chipping investigations, which are important for the definition of corrosion protection measures in automotive body design. The automation by use of modern parametric-associative CAD models in combination with high level of knowledge integration enables the creation of simulation tools, which are able to support development processes especially in early stages.
Boolean operation of geometric models is an essential element in computational geometry. An efficient approach is developed in this research to perform Boolean operation for triangulated meshes represented by B-rep. This approach is much fast and robust than many existing methods. The Octree technique is adapted to facilitate the division of the common space of two meshes in order to reduce the time of Octree's construction and intersection detection. Floating point arithmetic errors and singularity of intersections are then analyzed to guarantee the unique intersection between a segment and a face, and the continuity of intersections. A novel technique based on intersecting triangles is finally proposed to create required sub-meshes based on the type of Boolean operations. Some experimental results and comparisons with other methods are presented to prove that the proposed method is fast and robust.
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