[논문]FEA 시뮬레이션 기법을 이용한 수출용 한국 배 포장 트레이 및 완충패드 최적 포장설계

최동수; 손재용; 김진세; 김용훈; 박천완; 정현모; 황성욱

doi:10.21289/ksic.2020.23.5.843

FEA 시뮬레이션 기법을 이용한 수출용 한국 배 포장 트레이 및 완충패드 최적 포장설계
Optimum Packaging Design of Packaging Tray and Cushion Pad of Korean Pears for Exporting using FEA Simulation 원문보기

한국산업융합학회 논문집 = Journal of the Korean Society of Industry Convergence, v.23 no.5, 2020년, pp.843 - 852

최동수 (국립농업과학원 수확후관리공학과) , 손재용 (국립농업과학원 수확후관리공학과) , 김진세 (국립농업과학원 수확후관리공학과) , 김용훈 (국립농업과학원 수확후관리공학과) , 박천완 (국립농업과학원 수확후관리공학과) , 정현모 (경북과학대학교 물류포장학과) , 황성욱 (계명대학교 화공학과)

Abstract ▼ AI-Helper

Among the many packaging materials used in cushion packaging, there is a lack of optimum design for packaging trays and cushion pads used in pear packaging for export and domestic distribution. It causes over-packaging due to excessive material input, and can be solved by applying various parameters needed to optimize the design of the packaging tray and cushion pad considering the packaging material and the number of pears in the box. In the case of a cushion pad for pears, the economic efficiency of material and thickness should be considered. Therefore, it is possible to design a packaging tray and cushion pad depending on eco-friendly packaging materials (PLA, PET) used by applying appropriate design parameters. The static characteristics of the materials used for the packaging of pears were analyzed using FEA (finite element analysis) simulation technique to derive the optimal design parameters. In this study, we analyzed the contact stress and deformation of PET, PLA tray (0.1, 0.5 1.0, 1.5 and 2 mm) and PET foam (2.0, 3 .0 and 4.0 mm) with pears to derive appropriate cushion packaging design factors. The contact stress between the pear and PET foam pad placed on PLA, PET trays were simulated by FEA considering the bioyield strength (192.54±28 kPa) of the pears and safety factor (5) of packaging design, which is the criterion of damage to the pears. For the combination of PET tray and PET foam buffer pad, the thickness of the PET foam is at least 3 mm, the thickness of the PET foam is at least 1.0 mm, the thickness of the foam is at least 2 mm, and if the thickness of the PET tray is at least 1.5 mm, the thickness of the foam is at least 1 mm, suitable for the packaging design. In addition, for the combination of PLA tray and PET foam pad, the thickness of the PET foam was not less than 2 mm if the thickness of the PLA tray was 0.5 mm, and 1 mm or more if the thickness of the PLA tray was not less than 1.0 mm, the thickness of the PET foam was suitable for the packaging design.

주제어

표/그림 (10)

그림 Fig. 1 Design of packaging tray and cushion pad for export pears
그림 Fig. 2 Compression tester of the pears
그림 Fig 3. The meshed 3D models for FE simulation of PET/PLA tray and PET foam
표 Table 1. Material properties of PET, PLA trays and PET foam components used for the FEA
그림 Fig. 4 Force-deformation curve of pear by compression test
표 Table 2. von Mises stress of different mesh size of PET tray (1 mm) and PET foam (1 mm) using FEA
그림 Fig. 5 Contact stress and deformation of PET tray and PET foam pad by FEA
그림 Fig. 6 Contact stress and deformation of PLA tray and PET foam pad by FEA
표 Table 3. Results of contact stress between pear and PET/PLA tray with PET foam (Safety factor : 5)
표 Table 4. Results of contact deformation between pear and PET/PLA tray with PET foam (Safety factor : 5)

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제안 방법

In addition, a semipermanent PET foam molded on the inside floor of the tray is designed to prevent compression damage caused by shock and vibration during transport of the pear. In this study, the contact stress and deformation with pears were analyzed by application of the thickness of PET, PLA tray (0.1, 0.5, 1.0, 1.5, and 2.0 mm) and PETfoam (2.0, 3 .0 and 4.0 mm) to derive appropriate cushion packaging design factors.
In this study, the static characteristics of PET and PLA trays and PET foam materials, eco-friendly packaging materials applied to the packaging of export pears were analyzed using FEA a simulation technique to derive optimal design parameters. In addition, by applying appropriate design parameters considering the amount of fruit and the distribution environment, the appropriate fruit tray cup pad can be designed.
In this study, to perform the optimum packaging design of packaging trays and cushion pads for exporting Korean pears, we used 3D modeling and FEA techniques. The optimum packaging materials were selected from the theoretical analysis of PET, PLA tray applied PET foam Pad for using packaging materials of exporting pears and the best packaging materials were derived based on FEA analysis results of each material, the contact stress and deformation between the pear and cushion pad.
Physical environments such as shock and vibration in transit are designed by applying the safety factor of 4∼5 in the packaging design (Kim, 2010), and the results of the analysis of static conditions and the safety factor (5) of the physical environment were also applied in this study.
Finite Element Method (FEM) has been used to investigate the effect of mechanical loads on fruits before developing a prototype of the intended design. Simulation tests were conducted to visualize the deformation behavior over time. Various studies have been reported on the use of FE to study the effects of compression and falling forces on fruit.
The geometric shapes of PET and PLA trays and PET foam were modeled as cosine functions, and for simplicity, the connection point between PET and PLA trays and PET foam was modeled using the sharing method for points (nodes). In the event of large deformation, pinball areas were allocated to increase convergence, giving acceptable intervals between surfaces.
The optimum packaging materials were selected from the theoretical analysis of PET, PLA tray applied PET foam Pad for using packaging materials of exporting pears and the best packaging materials were derived based on FEA analysis results of each material, the contact stress and deformation between the pear and cushion pad.

대상 데이터

In the event of large deformation, pinball areas were allocated to increase convergence, giving acceptable intervals between surfaces. The models were meshed to produce 17,231 finite elements for PET and PLA tray, 8,370 finite elements for PET foam, while the total number of nodes was 34,341 for PET and PLA tray, and 17,145 for PET foam. The number of nodes and elements according to the thickness of the sample was the same.

참고문헌 (16)

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저자의 다른 논문 :

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용어 설명 출처 목록 (6)

용어 설명: PCR은 세균 특이성이 있는 primer를 이용하여 적은 수의 세균이 있을지라도 쉽게 검출할 수 있는 유용한 방법이며, 이를 이용하여 구강 내 치면세균막이나 타액에서 직접 세균을 검출할 수 있게 되었다[8].

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