This paper combined the finite element method with theory of reliability design and applied the PDS module of ANSYS to establishing 3D parameterized model of shield cutter. What's more, it compiled the APDL command flow and obtained the reliability documents to analysing the reliability of shield cutter. It can be obtained the reliability of shield cutter and influence degree of different parameters to the reliability of shield cutter. Then it can be used to further study shield cutter rock breaking theory and provide a reliable theoretical basis for designing and improving shield cutter.
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