我们约定局部坐标系{O X Y_e}中变截面杆件e,它的端点为i、j。设在i、j受有轴向力、剪力和弯矩,它们分别表示为X_i~e、Y_i~e、M_i~e及X、Y~e、M。在这些力的作用下,i、j产生位移,分别变到i′、j′,相应的位移值分别是u请下载后查看，本文暂不支持在线获取查看简介。e、v~e、θ及u、v_j~e、θ_j~e。我们称X_i~e、Y_i~e、M_i~e、X_j~e、Y_j~e、M_j~e为变截面杆件e的杆端力P,称u_i~e、 We agree that the variable cross-section member e in the local coordinate system {O X Y_e} has end points i, j. Set in i, j subject to axial force, shear and bending moment, which were expressed as X_i ~ e, Y_i ~ e, M_i ~ e and X, Y ~ e, M. Under the action of these forces, i, j produce displacement, respectively, to i ’, j’, the corresponding displacement values ​​are u Please download to view, this article is not supported online to view the introduction. e, v ~ e, θ and u, v_j ~ e, θ_j ~ e. We call X_i ~ e, Y_i ~ e, M_i ~ e, X_j ~ e, Y_j ~ e, M_j ~ e is the rod end force P of variable section rod e,