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Chapter 19

Torsion

轴中的应力
轴中的应力
A shaft PQ is twisted when subjected to equal and opposite torques on either side. Consider a section perpendicular to the shaft's axis through an ...
圆轴的变形
圆轴的变形
A unique property of circular shafts is that under torsion, every cross-section remains plane and undistorted, rotating as a solid rigid slab. To ...
圆轴 - 线性范围内的应力
圆轴 - 线性范围内的应力
Consider a case when the torque applied to the circular shaft is within Hooke's law limit, so there is no permanent deformation. Now, recall the ...
扭转角度 - 弹性范围
扭转角度 - 弹性范围
Consider a circular shaft of length L and a uniform cross-section of radius r subjected to a torque at its free end. The maximum shearing strain in the ...
扭转角度 - 解决问题
扭转角度 - 解决问题
The electric motor exerts a 700 N-m torque on an aluminium shaft, causing it to rotate at a constant speed. Pulleys B and C experience torques of 300 N-m ...
传动轴设计
传动轴设计
The design specifications required for a transmission shaft are the power transmitted by the shaft and its rotation speed. Based on these specifications, ...
圆轴中的应力集中
圆轴中的应力集中
Recall the elastic torsion formula, applicable to a circular shaft with a uniform cross-section. Here, it is assumed that the shafts are loaded at their ...
圆轴的塑性变形
圆轴的塑性变形
When materials are subjected to stresses exceeding their yield strength, plastic deformation occurs, causing a permanent strain. In the case of circular ...
圆轴 - 弹塑性材料
圆轴 - 弹塑性材料
Within the elastic limit, the maximum stress in a solid circular shaft varies linearly with a radial distance from its axis. As the torque increases, the ...
圆轴中的残余应力
圆轴中的残余应力
In elastoplastic materials, residual stress can develop when the material undergoes plastic deformation due to high shearing stress or large strains. When ...
非圆形杆件的扭转
非圆形杆件的扭转
During torsional loading, the cross-sections of the circular shafts remain plane and undistorted since they are axis-symmetric. However, due to the lack ...
薄壁空心轴
薄壁空心轴
Consider a small portion of width 'dx' from a thin-walled hollow shaft of thickness 't' subjected to torsional loading. Since the portion ...
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