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Technical Paper

Sheet Metal Bending Pattern Optimization for Desired Natural Frequencies

2012-11-25
2012-36-0630
To meet the increasingly high NVH consumer and product requirements, it is necessary to obtain maximum dynamic performance of the vehicle structure. For such superior properties, e.g. strength, stiffness, and weight, there are several methodologies, such as parameter optimization (useful for fine adjustments), topology optimization (limited by manufacturing processes), and shape optimization of structural plates. Among the shape optimization methods, the method of embossed patterns allows large gains in structural stiffness as a result of imposing small deformations in the shape of the sheet metal. However, the method has limited applicability because it depends on weighting factors whose choice criterion is an open problem, with no closed solution, depending on methodologies such as the DoE (Design of Experiments) for its definition.
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