TY - JOUR
T1 - Unsteady Thermal Analysis of Injection Mold by Boundary Element Method
AU - Yamamoto, Satoru
AU - Matsuoka, Takaaki
AU - Inoue, Yoshinori
AU - Takahashi, Hideroh
PY - 1992
Y1 - 1992
N2 - An unsteady thermal analysis program has been developed to simulate transient heat transfer of molds in computer-aided engineering for injection molding of thermoplastic. The three-dimensional unsteady thermal conductive equation is solved by using the boundary element method (BEM). Heat flux on the cavity and the runner during the cooling stage, which is calculated from one-dimensional thermal analysis by using the finite difference method, is taken into consideration as boundary conditions. The change in boundary conditions due to mold opening is also taken into account in the analysis. A cycle average method is proposed for diminishing the computing time of the unsteady boundary element analysis. With the method, the mold temperatures of the past molding cycles are approximated by a set of average heat flux. Mold temperatures were calculated for the mold of a box -shaped part and were compared with experimental results. The calculated mold temperatures were in good agreement with the experimental ones during injection molding. The cycle average method was successfully applied to this analysis.
AB - An unsteady thermal analysis program has been developed to simulate transient heat transfer of molds in computer-aided engineering for injection molding of thermoplastic. The three-dimensional unsteady thermal conductive equation is solved by using the boundary element method (BEM). Heat flux on the cavity and the runner during the cooling stage, which is calculated from one-dimensional thermal analysis by using the finite difference method, is taken into consideration as boundary conditions. The change in boundary conditions due to mold opening is also taken into account in the analysis. A cycle average method is proposed for diminishing the computing time of the unsteady boundary element analysis. With the method, the mold temperatures of the past molding cycles are approximated by a set of average heat flux. Mold temperatures were calculated for the mold of a box -shaped part and were compared with experimental results. The calculated mold temperatures were in good agreement with the experimental ones during injection molding. The cycle average method was successfully applied to this analysis.
UR - http://www.scopus.com/inward/record.url?scp=85024316883&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85024316883&partnerID=8YFLogxK
U2 - 10.1299/kikaib.58.898
DO - 10.1299/kikaib.58.898
M3 - Article
AN - SCOPUS:85024316883
VL - 58
SP - 898
EP - 903
JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
SN - 0387-5016
IS - 547
ER -