|제목(영문)||FE analysis of refrigerator drop test and the optimization of lower hinge geometry using equivalent static load method|
홍석무 (S.M.Hong ,국립공주대학교 금형설계공학과 ) ▷공저자네트워크등록하기
To accuratεly predict deformations caused by an impact when a refrigerator is dropped during transport, the material model should consider the strain rates in the lower half of the refrigerator (particularly its hinges and cushions). However, dynamic finite element (FE) analysis is computationally expensive, especially when optimization schemes to minimize deformations are operated. This study reveals that, by applying the equivalent static load method, it is possible, with only one FE analysis, to obtain the load disσibution that can be obtained via dynamic analysis. Based on the equivalent static load method, an optimization method is established and used to minimize hinge deformations. Comparing the results obtained by using the proposed method with the actual drop test results, we observe that the minimum hinge deformations are similar. This indicates that, by applying this FE-based optimization approach, computational costs can be reduced drastically.
|keyword||Drop/impact test\; Dynamic finite element method\; Equivalent static load\; Lower hinge\; Reverse engineering|
|저널명||Journal of Mechanical Science and Technology ▷관련저널보기|