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中文摘要：
通过CATIA建立大型民机齿轮齿条式前轮转弯机构中齿轮齿条运动机构的三维实体模型,在ABAQUS中建立有限元模型并定义相关接触参数,对齿轮齿条啮合情况进行齿面接触应力以及齿根弯曲应力的分析。以Hertz弹性碰撞理论为基础,在ADAMS中进行了齿轮齿条刚体啮合力计算。并在刚体啮合力计算的基础上将齿轮和齿条作为柔性体,在ADAMS中进行刚柔耦合啮合力及齿根应力分析,将啮合力结果与刚体分析进行对比发现其基本吻合,而齿根弯曲应力与有限元分析结果则相差24.8%。
英文摘要：
A three-dimensional rack and pinion model for nosewheel steering mechanism of a large civil aircraft is established through CATIA.Then a finite element model is set up and relevant contact parameters are defined in ABAQUS to analyze the tooth surface contact stress and tooth root bending stress of the rack and pinion meshing.Based on the elastic collision theory of Hertz,the rack and pinion rigid body meshing force is calculated in ADAMS.After that,with the rack and pinion being taken as a flexible body,the rigid-flexible engaging force and tooth root stress are analyzed in ADAMS.The outcomes show that the engaging force result is basically consistant with the rigid body analysis,and the tooth root bending stress and the finite element analyzing result differs by 24.8%.
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