Abstract
The cyclic, transient heat transfer within a transfer molding tool during the EMC (Epoxy Molding Compound) curing stage was analyzed using iterative dual reciprocity boundary element method (DRBEM) and finite difference method (FDM) in a decoupled sequence. It is found that both heat transfer at the mold exterior surface and cyclic, transient variation in mold temperatures are significant and show distinguished influence on the extent of EMC curing. Compared with the presently analyzed results, the simulation based on an assumption of constant mold wall temperature overestimates the conversion profile, whereas the hybrid FESFM (Finite-Element/Shape-Factor Method) underpredicts it around the middle of the cavity surface where the exterior tool transfer effect is less distinguished. However, the FESFM also overestimates the conversion at locations near the mold parting surface where the influence from ambient heat transfer is significant.
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