unconfined compression

Compute method of estimate the response critical state of the close-type sprinkler under the roof without sideward-wall;

无侧限屋顶下闭式喷头启动临界状态的计算方法

The structure and the working principle of a new kind of hourglass worm gearing,which is called non-backlash hourglass worm gearing,are introduced.

阐述了一种新型环面蜗杆传动——无侧隙双滚子包络环面蜗杆传动的结构和传动原理。

The simple formulae for the sway and non-sway buckling critical loads of the bars, which has arbitrary rotational restraints at both ends, are proposed respectively.

提出了考虑剪切变形影响,计算两端任意转动约束轴压杆有侧移失稳及无侧移失稳的近似公式,通过与精确解对比,近似法具有很好的精度。