METODE ELEMEN HINGGA UNTUK PREDIKSI DEFORMASI BENDA KERJA DAN GAYA REAKSI DALAM SISTEM FIXTURE-BENDA KERJA

Abstract

Knowledge of workpiece deformation and locator reaction forces in the fixture-workpiece system are essential
for machining surface error prediction. Suitable methods for accurately predicting such deformations and forces are
essential to the design and operations of fixtures. In this regard, researches based finite element analysis in fixturing
has been widely applied by researchers. A finite element (FE) model of the fixture-workpiece system is well-suited for
predicting workpiece deformation and reaction forces. However, these studies generally neglect the effects of different
finite element model parameters on workpiece deformation. This study uses finite elemet method (FEM) to model a
fixture-workpiece system and to explore the effects of certain finite element model parameters on the prediction. In
addition, this effects on the prediction accuracy are also examined. Based on this study, the workpiece deformations
and locator reaction forces predicted by the FEM model shows agreement within 3-4 % of the experimental data.