Optimal design and modeling of gyroid-based functionally graded cellular structures for additive manufacturing

Li, Dawei; Liao, Wenhe; Dai, Ning; Dong, Guoying; Tang, Yunlong; Xie, Yi Min

doi:10.1016/j.cad.2018.06.003

Cited by 218 publications

(107 citation statements)

References 43 publications

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“…As a new technology, 3D-printing technology is gradually being accepted by engineers, and widely used in medical 6 , aerospace [7][8][9][10] , and other fields. With the development of 3D-printing technology and CAD technology, engineers have applied CAD technology widely in the design of lightweight lattice structures and the industrial design of additive manufacturing [11][12][13][14] . Accordingly, engineers can design more mechanisms that cannot be processed by traditional manufacturing technology that not only meet the requirements of the work, but also provide superior performance.…”

Section: D-printing Process Design Of Lattice Compressor Impeller Bamentioning

confidence: 99%

3D-printing process design of lattice compressor impeller based on residual stress and deformation

Jia

Zhang

2020

Sci Rep

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The application of a lattice structure in the lightweight design of compressor impellers can reduce their mass and moment of inertia, hence improving the effective carrying of aircraft and reducing the start and braking moments of the impeller. The feasibility of a processing-lattice compressor impeller is the prerequisite for its application. To control the residual deformation and residual stress effectively, a computer-aided design technique is used to simulate the manufacturing process of a compressor impeller. The residual deformation and stress of the compressor impeller during the additive manufacturing process is calculated. The material-stacking process and base-plate- and support-removal process of a TiAl6V4 impeller printed by an SLM280 metal 3D printer are simulated by the finite-element method. The results show that some change in the laser printing parameters leads to a significant impact on the residual stress and deformation amplitude of the impeller. The residual deformation and residual stress of the lattice compressor impeller with the same geometrical appearance after processing are less than the corresponding amplitude of the solid compressor impeller, which also shows that the printed lattice compressor impeller can more easily achieve the design requirements.

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Section: D-printing Process Design Of Lattice Compressor Impeller Bamentioning

confidence: 99%

3D-printing process design of lattice compressor impeller based on residual stress and deformation

Jia

Zhang

2020

Sci Rep

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“…Thus, pore size, porosity, and structure type can be locally controlled while preserving connectivity across the entire scaffold. A recent work [38] takes gyroid as the basic cell and applies topology optimization strategy to find the optimum density distribution of the cellular structures.…”

Section: Related Workmentioning

confidence: 99%

Strong 3D Printing by TPMS Injection

Yan

Rao

Lü

et al. 2020

IEEE Trans. Visual. Comput. Graphics

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3D printed objects are rapidly becoming prevalent in science, technology and daily life. An important question is how to obtain strong and durable 3D models using standard printing techniques. This question is often translated to computing smartly designed interior structures that provide strong support and yield resistant 3D models. In this paper we suggest a combination between 3D printing and material injection to achieve strong 3D printed objects. We utilize triply periodic minimal surfaces (TPMS) to define novel interior support structures. TPMS are closed form and can be computed in a simple and straightforward manner. Since TPMS are smooth and connected, we utilize them to define channels that adequately distribute injected materials in the shape interior. To account for weak regions, TPMS channels are locally optimized according to the shape stress field. After the object is printed, we simply inject the TPMS channels with materials that solidify and yield a strong inner structure that supports the shape. Our method allows injecting a wide range of materials in an object interior in a fast and easy manner. Results demonstrate the efficiency of strong printing by combining 3D printing and injection together.

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“…Other than the typical manufacturing processes shown in Figure 4, additive manufacture technology is very promising and can be used to fabricate structurally complex workpieces without the need for special fixtures and molds. It can also be used to create porous, lightweight workpieces [31]. In our curriculum, we have recommended this new manufacturing technology for students.…”

Section: Surface Paintingmentioning

confidence: 99%

Digital manufacturing course framework for senior aircraft manufacturing engineering undergraduates

Líu

Jin

2020

Comp Applic In Engineering

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Digital manufacture is a necessary part of modern aircraft construction. It has grown from its application in traditional structural part milling to be incorporated into the majority of aircraft manufacturing processes. Consequently, there is an emerging need for innovation in digital manufacturing courses to remain current with these rapid changes in the aircraft industry. This study focused on developing a new digital curriculum including computer‐aided design, computer‐aided manufacture, computer‐aided engineering, computer numerical control, virtual assembly, and product data management. The study included a literature survey on digital manufacturing course designs in which the limitations to traditional teaching activities with respect to digital manufacture were identified. A trend survey of aircraft manufacturing technologies was also presented to determine the aircraft industry's expectations for their new employees. A new digital curriculum design was presented that incorporated both existing digital manufacturing fundamental theories and practical tools into the course content. Finally, evaluations were successfully conducted to verify the effectiveness of our new digital curriculum.

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Optimal design and modeling of gyroid-based functionally graded cellular structures for additive manufacturing

Cited by 218 publications

References 43 publications

3D-printing process design of lattice compressor impeller based on residual stress and deformation

3D-printing process design of lattice compressor impeller based on residual stress and deformation

Strong 3D Printing by TPMS Injection

Digital manufacturing course framework for senior aircraft manufacturing engineering undergraduates

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