Abstract: According the characters of parts produced by gas-assisted injection molding, an algorithm of gas-channel mesh was formulated. Combining the manual setting of gas-channel path and automatic building of gas-channel node, semiautomatic generation of gas-channel mesh was realized. The algorithm was applied in CAE system, some case studies were used to verify that the generation was correct and reliable, which is prerequisite for numerical simulation of gas-assisted injection molding process.

Key words: Surface mold, Gas-channel mesh, Gas-channel path, Gas-channel node