Computer-aided design-while-engineering technology in top-down modeling of mechanical product

Pan, Zhiyi; Wang, Xin; Teng, Rumin; Xiao, Cao

doi:10.1016/j.compind.2015.05.004

Cited by 37 publications

(15 citation statements)

References 30 publications

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“…A better-developed variational parametrization method is referred to as the top-down modeling method [9,10]. All the parts are created and edited in the context of their assembly.…”

Section: Methodsmentioning

confidence: 99%

Using a parametric 3D assembly of a GTE combustion chamber to quickly generate its computed sector

2018

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The paper describes the development of a parametric 3D CAD assembly of a small-size GTD combustion chamber. Based on the chamber model, we derive the internal CAD volume of the designed single-burner sector. The created parametric models are auto-adjustable by an external excel spreadsheet controlling their parameters. The 3D combusion chamber assembly and the single-burner sector can further be used for optimizing the geometry of flame tubes and nozzles, arranging the sustainable fuel burning space, for the spatial distribution of air flows, and for other design tasks.

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“…A better-developed variational parametrization method is referred to as the top-down modeling method [9,10]. All the parts are created and edited in the context of their assembly.…”

Section: Methodsmentioning

confidence: 99%

Using a parametric 3D assembly of a GTE combustion chamber to quickly generate its computed sector

2018

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“…The finite element (FE) analysis is a part of an overall design cycle in the field of computer-aided engineering (CAE) including computer-aided design and testing [1][2][3]. Public concern is focused on how best to improve 3E (emerging engineering education) education in China in order to increase the nation's competitiveness [4,5].…”

Section: Introductionmentioning

confidence: 99%

An Engineering-Problem-Based Short Experiment Project on Finite Element Method for Undergraduate Students

et al. 2020

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How to cultivate students’ engineering practice ability in the digital manufacturing period is a difficult problem. This paper presents a finite element analysis experiment project for undergraduate students. The goals of implementing finite element modeling in this project are to enhance students’ understanding of theoretical mechanics and to introduce computational methods to undergraduate students at an early stage during their undergraduate education. The students are required to use different methods to analyze the stress state of a typical engineering structure and seek the optimal design. Then, the experiment score is divided into two parts according to the course objectives. We analyzed the score distribution to find the limitations of teaching. The feedback from the students demonstrate that the experiment case from the engineering project can increase their interest in learning and applying the acquired knowledge. After comparisons, our conclusion is that outcome-based education (OBE) can effectively improve the quality of classroom teaching, and this experimental project can improve students’ engineering practice ability and obtain satisfactory teaching results.

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“…Some other methods depend on complex surface algorithms, involving overly cumbersome parameter optimization. In fact, in the perspective of CAD modeling, the modeling strategy above could only ensure the accuracy of geometric shape, but not necessarily meet the requirements of subsequent simulation and optimization, because their modeling strategy did not take the design/analysis intent [18][19][20][21], reusability [22,23] and model quality [24] into account. Although this does not affect the first surface construction, it will lead to cumbersome modification iteration and optimization [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Smoothing Parametric Design of Addendum Surfaces for Sheet Metal Forming

Tao

et al. 2020

Chin. J. Mech. Eng.

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The manual design of addendum surfaces on common CAD platforms is very tedious which requires many trialscorrections, which will certainly affect the construction efficiency and quality of addendum surfaces, and then affect the formability and quality of the workpiece in the process of sheet forming. In this paper, an automatic procedure based on parametric design method is proposed for the rapid construction of the addendum surfaces. The kernel of the parametric method is constructing boundary curves based on the shape of surfaces of workpiece and designing guide curves based on Hermite curve interpolation. By some simple parameters, the shape of the addendum surfaces could be controlled and adjusted easily. In addition, a minimum energy optimization method is employed to further optimize the constructed addendum surface. A finite element analysis for the sheet forming process is performed to evaluate the forming quality of constructed addendum surfaces. The instance illustrates that the addendum surface constructed by the proposed method could ensure both the overall smoothing of surfaces and the final forming quality, and it has a good effect on springback after forming. This research proposes a smoothing parametric design method for addendum surfaces construction which could construct and optimize addendum surfaces rapidly.

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Computer-aided design-while-engineering technology in top-down modeling of mechanical product

Cited by 37 publications

References 30 publications

Using a parametric 3D assembly of a GTE combustion chamber to quickly generate its computed sector

Using a parametric 3D assembly of a GTE combustion chamber to quickly generate its computed sector

An Engineering-Problem-Based Short Experiment Project on Finite Element Method for Undergraduate Students

Smoothing Parametric Design of Addendum Surfaces for Sheet Metal Forming

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