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双刃滚刀是盾构机工作过程中常用的掘进刀具,其工作性能对整个盾构机起着至关重要的作用。为了减少双刃滚刀工作过程中的振动,运用有限元方法对其进行了动态特性仿真分析。首先利用Pro/E5.0软件对常截面双刃盘形滚刀进行了三维建模;然后应用有限元分析软件ABAQUS对其进行模态分析,获得该双刃滚刀的前6阶固有频率和振型;最后采用多项式函数拟合方法对滚刀刀圈最顶端点的最大位移、滚刀的主应力和主应变的变化曲线进行了分析。该模态仿真分析结果为双刃滚刀和刀盘的动态优化设计提供了参考依据。
The double-edged hob is a commonly used heading tool in the working process of a shield machine, and its working performance plays a crucial role in the entire shield machine. In order to reduce the vibration in the working process of double-edged hob, the dynamic characteristics of the double-edged hob are analyzed by finite element method. First of all, Pro / E5.0 software was used to build a 3D cross-section double-edged disc hob. Then the finite element analysis software ABAQUS was used to perform modal analysis to obtain the first 6 natural frequencies and Finally, the polynomial function fitting method was used to analyze the maximum displacement of the topmost point of hob cutter, the main stress of hob and the curve of main strain. The results of modal simulation provide the reference for the dynamic optimization design of double-edged hob and cutterhead.