CAJ | 학술논문

采用有限元方法分析了工艺参数中入口流量和壁面滑移对挤出成型的影响，特别是对挤出压力降，挤出胀大比以及模流平衡系数等重要指标的影响。结果表明，随着入口流量的增大，模流平衡系数增大，同时模具型腔内的压力降也线性增大。壁面滑移的存在有利于减小挤出模内的速度梯度，从而减小挤出胀大比和模流平衡系数。
채용유한원방법분석료공예삼수중입구류량화벽면활이대제출성형적영향，특별시대제출압력강，제출창대비이급모류평형계수등중요지표적영향。결과표명，수착입구류량적증대，모류평형계수증대，동시모구형강내적압력강야선성증대。벽면활이적존재유리우감소제출모내적속도제도，종이감소제출창대비화모류평형계수。
Finite element analysis method was used to analyze the influence of the inlet flow and wall slip on the extrusion, especially for the extrusion pressure drop,extrusion swell ratio and dies balance coefficient etc. The result show that with the increase of the inlet flow,die balance coefficient increases,while the mold cavity pressure drop also is increased linearly. The existence of wall slip is conducive to reduce the velocity gradient inside the extrusion die,thereby reducing the extrusion die swell ratio and die balance coefficient.