TO THE CALCULATION OF COEFFICIENTS OF INFLEXIBILITY OF JOINTS, ASRESILIENT ELEMENTS, IN THE DYNAMIC MODEL OF PRESSO-SPIRAL CONNECTION
Abstract
The question of determination of coefficients of transversal and angular inflexibility of presso-spiral connection is investigational that consists only of nut and screw-bolt, at loading of nut on a free butt end accordingly by transversal force or bending moment.
For the calculation of values of coefficients of inflexibility of resilient elements in the dynamic model of presso-spiral connection they can be designed in the type of successive connection of two types of elements.
The first type is conditioned by own deformations of details at the action of by volume forces of inertia. His inflexibility depends on geometry of details and mechanical descriptions of material and determined for to the known formulas of resistance of materials.
The second type of elements is conditioned by pin deformations of superficial layers material in a joint.
Considered dynamic model of presso-spiral connection the type of successive connection of elements it is conditioned by pin deformations of superficial layers of material in joints.
The analysis shows that within the limits of the done suppositions inflexibility of the threaded connection is linear, here it depends on effort of wearing out and nonlinear grows with her increase. Thus, coefficients of inflexibility of the threaded connection self-reactance dependency upon effort wearing out through the parameter of n.
The got correlations allow analytically calculating in flexibility of the presso-spiral connections for to the power parameters: by landing effort of crimping and effort of wearing out of spiral connections.
Thus, a parametric dependence of the stiffness coefficients of the threaded joint on the tightening force was found.
Keywords: construction, presso-spiral connection, parameters of the system, dynamic model, coefficient of inflexibility, structural model, deformation, transversal and angular inflexibility, effort of wearing out.
References
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