A Novel Shape-Adjustable Surface and Its Applications in Car Design

Fan, Liu; Ji, Xiaomin; Hu, Gang; Gao, Jing

doi:10.3390/app9112339

Cited by 7 publications

(6 citation statements)

References 30 publications

(36 reference statements)

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“…For the advanced shape optimization method, Liu et al [76] used shape-adjustable quadrilateral surfaces for optimization. This work emphasizes and describes the optimization method, yet results have not been validated by experimental measurements.…”

Section: Shape Optimizationmentioning

confidence: 99%

Quantitative Analysis of Drag Reduction Methods for Blunt Shaped Automobiles

Szodrai

2020

Applied Sciences

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In fluid mechanics, drag related problems aim to reduce fuel consumption. This paper is intended to provide guidance for drag reduction applications on cars. The review covers papers from the beginning of 2000 to April 2020 related to drag reduction research for ground vehicles. Research papers were collected from the library of Science Direct, Web of Science, and Multidisciplinary Digital Publishing Institute (MDPI). Achieved drag reductions of each research paper was collected and evaluated. The assessed research papers attained their results by wind tunnel measurements or calculating validated numerical models. The study mainly focuses on hatchback and notchback shaped ground vehicle drag reduction methods, such as active and passive systems. Quantitative analysis was made for the drag reduction methods where relative and absolute drag changes were used for evaluations.

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Section: Shape Optimizationmentioning

confidence: 99%

Quantitative Analysis of Drag Reduction Methods for Blunt Shaped Automobiles

Szodrai

2020

Applied Sciences

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“…However, in recent years, the curves and surfaces mentioned above are difficult to implement and meet the practical requirements in the design or engineering field [17,18]. This is because the shapes of Bézier and B-spline curves and surfaces cannot be modified by additional shape parameters except the control points, and the calculation of the NUBRS model is verbose [19].…”

Section: Introductionmentioning

confidence: 99%

Parametric Model for Kitchen Product Based on Cubic T-Bézier Curves with Symmetry

2020

Symmetry

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The parametric method of product design is a pivotal and practical technique in computer-aided design and manufacturing (CAD/CAM) and used in many manufacturing sectors. In this paper, we presented a novel parametric method to design a kitchen product in the residential environment, a kitchen cabinet, by using cubic T-Bézier curves with constraints of geometric continuities. First, we introduced a class of cubic T-Bézier curves with two shape parameters and derived the G1 and G2 continuity conditions of the cubic T-Bézier curves. Then, we constructed shape-controlled complex contour curves of the kitchen cabinet by using closed composite cubic T-Bézier curves. The shapes of the contour curves can be adjusted intuitively and predictably by altering the values of the shape parameters. Finally, we studied shape optimization and representation of ellipses for the contour curves of the kitchen cabinet by finding optimal shape parameters and applicable control points respectively. The provided modeling examples showed that our method in this paper can improve the design and scheme adjustment effectively in the conceptual design stage of kitchen products.

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“…Sharma [29] constructed quartic trigonometric Bézier (QTB) curve with two different shape parameters, the properties of QTB curve with various modeling and shape control of the curve is also discussed. In [30], a new parameterized surface termed as SQ-Coons surface is proposed according to the build mode of coons patch. This result improves the design and scheme adjustment efficiency in the conceptual design stage.…”

Section: Introductionmentioning

confidence: 99%

A Novel Approach of Hybrid Trigonometric Bézier Curve to the Modeling of Symmetric Revolutionary Curves and Symmetric Rotation Surfaces

et al. 2019

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The modeling of Bézier curves and surfaces with their shape parameters is the most popular area of research in computer aided geometric design/computer aided manufacturing (CAGD/CAM) due to their geometric characteristics. In this paper, we propose an important idea to tackle the problem in construction of some engineering symmetric revolutionary curves and symmetric rotation surfaces by using the generalized hybrid trigonometric Bézier (or GHT-Bézier, for short) curve. The shape of the curves and surfaces can be modified by the alteration of shape parameters. The free-form complex curves using GHT-Bézier curves with constraints of parametric continuity are constructed. Finally, by using the GHT-Bézier curves with their continuity conditions and symmetric formulas, we construct different types of symmetric figures, symmetric revolutionary curves and symmetric rotation surfaces in R 2 and R 3 to show the efficiency of modeling. These symmetric examples show that the proposed method is time saving, effective and efficient in construction of complex engineering symmetric curves and surfaces.

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A Novel Shape-Adjustable Surface and Its Applications in Car Design

Cited by 7 publications

References 30 publications

Quantitative Analysis of Drag Reduction Methods for Blunt Shaped Automobiles

Quantitative Analysis of Drag Reduction Methods for Blunt Shaped Automobiles

Parametric Model for Kitchen Product Based on Cubic T-Bézier Curves with Symmetry

A Novel Approach of Hybrid Trigonometric Bézier Curve to the Modeling of Symmetric Revolutionary Curves and Symmetric Rotation Surfaces

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