Stiffness Calculation and Analysis of a Circular Flexible Spherical Joints
In order to reduce the processing difficulty and manufacturing cost of flexible spherical joints,a circular flexible spherical joint is proposed.The stiffness characteristics and design method of this type of spherical joint are investigated.The stiffness is modeled using the segmentation method,numerical calculation method,displacement matrix method and positional transformation equation.The influence of the structural parameters of the circular flexible spherical joint on its stiffness is analyzed using the variable unique method.According to the obtained stiffness mathematical model,a set of examples is used for stiffness calculation,and both finite element and stiffness experimental analyses are performed.The analysis results show that the maximum error between the finite element and stiffness experimental analysis results and their theoretical values does not exceed 7％,which verifies the correctness of the derived stiffness matrix and the effectiveness of the design method,and provides a significant reference for the design and mechảnical properties analysis of the flexible spherical joint.
circular flexible spherical jointstiffness modelingstiffness analysisfinite element analysisstiffness analysis experiments
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