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本文结合有关教材,讨论结构力学的两个问题:1 关于几何不变体系的判断规则 对于图1—1所示的四杆(刚片)铰结体系,由于各杆件相互间的变动度(可动度)为1,
This article combines relevant teaching materials and discusses two issues of structural mechanics: 1 Judgment rules for geometrically invariant systems For the four-bar (rigid) hinged joint system shown in Figure 1-1, the degree of movement of the individual rods is Movable) is 1,