Abstract
Adding a filler to the inner ridge groove has been considered to reduce the inevitable cross-sectional deformation of double-ridged rectangular bent tube during E-typed rotary draw bending process. Using a numerical simulation method, the three-dimensional finite element models for E-typed rotary draw bending of H96 brass double-ridged rectangular tube without and with inner ridge groove filler under different bending radii were established. Based on the models, it is found that using the filler can obviously reduce the width deformation of inner ridge groove and the good double-ridged rectangular bent tube with small bending radius can be obtained. These results have engineering application worth for improving the forming quality of double-ridged rectangular bent tube.
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