, 15 1 , 2021
J. Korea Society of Die & Mold Engineering, Vol.15 No.1, 2021 ISSN 2092-9692
(Pump cap) , . , (Dual pumpcap) 1, : E-mail: [email protected] . , , , , . , . , , 1,2), . 1,3 1 1 2 2 3 1 1, ( ) 2 3
An analysis on the drop impact simulation of dual pump cap container made
of eco-friendly materials
Eun-Chan Wi
1,3Min-Sung Ko
1Hyun-Jeong Kim
1Joong-Bae Lee
2Min-Su Kim
2Joo-Hyung Lee
3Jung-Shik Kong
1Seung-Yub Baek
Department of Mechanical Convergence Engineering, Induk University1, ILLUPACK Co.,Ltd2
Department of Mechanical Design and Robot Engineering, Seoul National University of Science&Technology3 (Received March 21, 2021 / Revised March 29, 2021 / Accepted March 31, 2021)
Abstract: Pump cap is a product that is widely used due to its ease of use and simple operation. These pump caps are applied to heterogeneous functional cosmetics and are being developed as dual pump caps. However, the conventional dual pump cap has a problem in that it is inconvenient to use and leakage occurs. In addition, it is formed of a plurality of materials, and there is a problem that is difficult to recycle. Lately, since the problem of environmental pollution is getting serious, the dual pump cap, which is difficult to recycle, cannot be used. Currently, eco-friendliness has been considered in Korea, and there are no dual pump cap containers with excellent sealing performance. Therefore, in this study, a dual pump cap container made of eco-friendly material was designed. In addition, finite element analysis was performed to verify the design feasibility of the product.
, , , , , , 3) . , (drop test) . , ,
(Finite Elements Method) , 3-6). , 7-9) . ANSYS Workbench , Explicit Dynamics (stress) (Safety factor) . (Button),
(Pump guide), (Shoulder), (Pump set), (Inner container), (Piston),
(External container), (Support) ,
PP(PolyPropylene) . Fig. 1 , . 1m (Concrete) , 00˚, 45˚, 90˚, 135˚, 180˚, 225˚ 6 . ˚ ˚ ˚ ˚ ˚ ˚ Fig. 2 .
, , , . Fig. 3 135˚ , 9.81 m/s2 , (1) 4.43 m/s , 0.001 sec . . × × ≈ (1) ANSYS Mesh , Mesh size 0.5mm Nodes 915,728 , Elements 4,380,837 . , Bonded . Fig. 4 135˚ Mesh ,
Mesh Nodes, Elements
. Bonded , Table 1 PP Concrete . Density (kg/m3) Young's Modulus (MPa) Poisson's Ratio Tensile yield strength (MPa) Poly Propylene 890 896 0.4103 27.6 Concrete 2,300 30000 0.18 0 , 6 ~ 1 . C(Vitamin C) (Hyaluronic acid) . (Equivalent
stress) (Safety factor)
˚ ˚ ˚ ˚ ˚ ˚ Fig. 5 , , , . Fig. 6 , 0˚, 90˚, 180˚ , 45˚, 135˚, 225˚ . 180˚ 3.7416 MPa , 135˚ 4.3134 MPa . Fig. 7 , . 0˚, 90˚, 180˚ , 45˚, 135˚, 225˚ . , 180˚ 7.3765 , 135˚ 6.3987 . 3 ~ 4MPa , 6 ~ 7 . PP 4MPa , 5 , 1m , . 1m , 1m . ,
, . , 1m , 135˚ 2m 6.26 m/s 0.01 sec . ˚ . Fig. 8 135˚ , 1m 0.001 sec 4.3134 MPa , 2m 0.01 sec 18.582 MPa . 4.5 . ˚ Fig. 9 135˚ , 1m 0.001 sec 6.3987 , 2m 0.01 sec 1.4853 . 1.5 . 135˚ 4.5 , 5 1.5 . 1 , 1 . , 1 ,
(crack) , , , . . . Fig. 10 , , , , 20% . , 135˚ 18.582 MPa 1.4853 . Fig. 11 . , . (coordinate) .
Fig. 12 , , . Fig. 13 Fig. 12 , 1(1-1, 2-1) 3(3-1, 3-2) 0.1 MPa , 2(2-1, 2-2) 1 MPa 14% , . Table 2 . Fig. 14 , , 1.4853 1.3386 0.15 , . , , , . , , . Time (ms) 1-1 1-2 2-1 2-2 3-1 3-2 0 0 0 0 0 0 0 0.5 0.0016 0.0013 0.0158 0.0135 0.0005 0.0003 1 0.0539 0.0388 0.1836 0.1702 0.0213 0.0148 1.5 0.3267 0.2338 0.6071 0.6370 0.1566 0.1202 2 0.8546 0.6694 1.2306 1.2696 0.4987 0.4181 2.5 1.4679 1.2415 2.106 1.9141 0.9682 0.8630 3 2.2268 1.8729 3.2001 2.7697 1.4718 1.325 3.5 3.2181 2.6732 4.1239 3.693 2.1271 1.8858 4 4.1063 3.5579 4.665 4.3077 3.0114 2.6548 4.5 4.7518 4.2601 5.0074 4.652 3.8611 3.451 5 5.1947 4.7472 5.3569 4.8323 4.4732 4.0831 5.5 5.5224 5.1381 5.7458 4.9516 4.9256 4.5335 6 5.8824 5.4753 6.1199 5.2149 5.2666 4.866 6.5 6.222 5.8162 6.4147 5.5648 5.5467 5.1934 7 6.5146 6.1913 6.6437 5.8162 5.8888 5.5595 7.5 6.7419 6.5169 6.8005 5.9756 6.2162 5.8887 8 6.8778 6.7558 6.881 6.0862 6.4254 6.1216 8.5 7.0292 6.9644 6.9898 6.1812 6.5869 6.3147 9 7.1781 7.1219 7.1777 6.2956 6.7413 6.5547 9.5 7.3184 7.2378 7.3421 6.4133 6.8896 6.796 10 7.4898 7.3977 7.4354 6.5252 7.0247 6.9519
1) 1m 3 ~ 4 MPa , 6 ~ 7 . PP 4 MPa , 5 , 1m . 2) 135˚ 2m 10 4.5 , 5 . 1 , , . 3) , , , , . , , . “ ” (S2949809) . .
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