Development of the hybrid insert for composite sandwich satellite structures

Lim, Jun Woo; Lee, Dai Gil

doi:10.1016/j.compositesa.2011.04.008

Cited by 31 publications

(37 citation statements)

References 11 publications

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“…2(a). Because the co-cure method is effective to fabricate the hybrid composites [17][18][19]. The cured hybrid composite faces had a fiber volume fraction of 60% with the material properties listed in Table 2.…”

Section: Fabrication Of the Hybrid Composite Low-observable Radomementioning

confidence: 99%

Hybrid composite low-observable radome composed of E-glass/aramid/epoxy composite sandwich construction and frequency selective surface

Choi

Lee

2014

Composite Structures

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Section: Fabrication Of the Hybrid Composite Low-observable Radomementioning

confidence: 99%

Hybrid composite low-observable radome composed of E-glass/aramid/epoxy composite sandwich construction and frequency selective surface

Choi

Lee

2014

Composite Structures

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“…There are a wide variety of different insert elements due to different and changing requirements and the absence of a uniform design approach. To give an example, in the manufacturing process, a distinction is made whether the insert is bonded during the production of the sandwich panel (hot bonded) or is installed after the production of the sandwich panel (cold bonded) (Bianchi et al 2010;Lim & Lee 2011). Other distinguishing criteria are the orientation of the connection, the decisive load case and the installation depth.…”

Section: State Of the Artmentioning

confidence: 99%

Optimization of load introduction points in sandwich structures with additively manufactured cores

Schwenke

Krause

2020

Des. Sci.

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This paper presents how numerical optimization methods, like topology optimization, and new design possibilities through additive manufacturing (AM) can be used for structural improvements of the load introduction points in sandwich structures. A new design approach is presented, which allows a direct load-path optimized integration of the load introduction point into the sandwich core. The corresponding methodical procedure is shown and the application is demonstrated exemplarily for a sandwich structure with a honeycomb core. The advantages for design science are that the new design possibilities of AM can be considered and used when designing the load introduction points. Thus, the additional reinforcements of the sandwich structures to absorb locally introduced forces in the lightweight structure can be minimized. This enables a meaningful technical comparison and it can be decided in the future whether such a design can be used for sandwich structures under economic aspects. In addition, the influence of the initial and boundary conditions on the design is presented and discussed in this paper. The challenges of optimizing multiple load introduction points simultaneously as well as the special aspects to be considered when transferring the design approach to larger sandwich structures are also highlighted.

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“…Although the maximum failure load could not be predicted precisely with the linear FE analysis, the stress concentration area and the general behavior of the gasketless bipolar plates were predicted with the linear FE analysis [22]. A unit cell model with a groove was analyzed with the 3-dimensional quarter models in ABAQUS by considering symmetry.…”

Section: Finite Element Analysismentioning

confidence: 99%