Finite element numerical simulation, Cold-rolled AL1100, Cross wedge rolling Abstract. The geometrical and physical models of a ladder shaft for finite element numerical simulation are developed. With the ANSYS/LS-DYNA software, the knifing zone, forming zone and sizing zone of the cold-rolled AL1100 ladder shaft are simulated, including the flow of the material and the strain condition in the whole rolling process. Distribution of tangential strain , radial strain , axial strain , and equivalent strain is analyzed. The influences of wedge corner , stretch corner and reduction of area on the strain and rolling force are discussed. The study is helpful to reveal the law of metal flow inside the rolled part and guide the production of cold Cross Wedge Rolling (CWR).