Axial compression test can use double knife-edge bearing to instead spherical hinge bearing;
轴心受压构件试验可采用双刀口支座代替球铰支座；
A new concept of compliance accuracy ratio of flexure spherical hinge was proposed, which was used as the performance index of hinges.
提出弹性球铰链柔度精度比的概念，并以此为性能指标对铰链的设计进行了优化。
Based on the Castigliano's second theorem, the equations were formulated for the compliance and precision of an elliptical flexure spherical hinge.
基于卡氏第二定理，推导出椭圆型弹性球铰链柔度、精度的解析表达式。
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