在弹性小变形下,本文导出了考虑弯曲、剪切及轴向三种变形型式和计及截面转动惯量、端点集中质量,纵向弯曲影响的平面连杆机构一般系统的运动微分方程,并对求其稳态解的富氏级数法进行了改进和完善;进而给出了求解机构杆件截面上任一点法向应力和横向剪应力以及各构件最大动应力的矩阵计算式。文中以曲柄摇杆机构为例,列出了相应数值结果。 Under the small elastic deformation, this paper derives the differential equations of motion of a general system of planar connecting rod mechanism considering the three types of bending, shearing and axial deformation, the moment of inertia of the section, the concentrated mass of the end point and the longitudinal bending, The steady-state solutions of the Fu’s series method were improved and perfected. Then the matrix calculation formula for solving the normal stress and transverse shear stress and the maximum dynamic stress of each member on the cross section of the mechanism member was given. In this paper, crank rocker mechanism, for example, lists the corresponding numerical results.