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Chapter 19

Torsion

الدرس: الاجهادات في عمود الدوران
الدرس: الاجهادات في عمود الدوران
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 ...
الدرس: التشوه في عمود دائري
الدرس: التشوه في عمود دائري
A unique property of circular shafts is that under torsion, every cross-section remains plane and undistorted, rotating as a solid rigid slab. To ...
العمود الدائري - الإجهاد في المجال الخطي
العمود الدائري - الإجهاد في المجال الخطي
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 ...
زاوية الالتواء - مجال المرونة
زاوية الالتواء - مجال المرونة
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 ...
زاوية الالتواء - حل االمسألة
زاوية الالتواء - حل االمسألة
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 ...
تصميم عمود ناقل الحركة
تصميم عمود ناقل الحركة
The design specifications required for a transmission shaft are the power transmitted by the shaft and its rotation speed. Based on these specifications, ...
تركيزات الإجهاد في اعمدة دائرية
تركيزات الإجهاد في اعمدة دائرية
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 ...
التشوه اللدن في الأعمدة الدائرية
التشوه اللدن في الأعمدة الدائرية
When materials are subjected to stresses exceeding their yield strength, plastic deformation occurs, causing a permanent strain. In the case of circular ...
الاعمدة  الدائرية-المواد اللدنة المرنة
الاعمدة الدائرية-المواد اللدنة المرنة
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 ...
الإجهادات المتبقية في العمود الدائري
الإجهادات المتبقية في العمود الدائري
In elastoplastic materials, residual stress can develop when the material undergoes plastic deformation due to high shearing stress or large strains. When ...
التواء الأعضاء غير الدائرية
التواء الأعضاء غير الدائرية
During torsional loading, the cross-sections of the circular shafts remain plane and undistorted since they are axis-symmetric. However, due to the lack ...
عمود  مجوف ذو جدران رقيقة
عمود مجوف ذو جدران رقيقة
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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