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力学中常见的约束有哪些？

2025-03-15 20:04:23

推荐回答（1个）

回答1：

平面内考虑有:简支:只有一个方向位移为0.受一个方向反力,可以转动,另外向可以移动.(比如拐杖下端)铰支(铰接):两个方向位移为0,受XY两个方向反力约束,,不能移动,可以转动.固支(固接):位移和转角均为0,受XY两个方向反力约束.受弯矩反力约束.不能移动,不能转动

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