对切应变主轴不变的平面简单切变过程，通过无穷小应变的积分，导出了真实切应变计算公式。
An equation for the calculation of true shear strain was derived from the integration of infinitesimal shear strain in plane shearing process with constant principal shear strain direction.
本研究对各种工况下主轴的应力应变场进行数值模拟分析，并对主轴应力集中区域的力学性能进行了分析和研究，为进一步的疲劳分析提供了依据。
The stress-strain field of winder axle in various working conditions is analyzed and mechanics performance of stress concentration region is studied, which provides reference for its fatigue analysis.
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