The cross-spring pivot as a constructional element
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This paper deals with the behaviour of the so-called cross-spring pivot, a flexible element connecting two members of a construction and consisting of two flat springs that cross each other at an angle of, for instance, 90 degrees. To a first approximation the pivot point coincides with the point of “intersection” of the two springs. By an elementary calculation we find the rigidity of the cross-spring pivot to depend to a large extent upon the size and the direction of the force to be transmitted. A second calculation gives us the shift of the pivot point occurring for large angles of deflection, though for a pure bending moment only. A survey of the results is given at the end of the paper.
KeywordsDeflection Angle Large Deflection Pivot Point Intersection Angle Spring Length
- 1).Young, W. E., An investigation of the cross-spring pivot, J. appl. Mech.11 (1944) A 113.Google Scholar
- 2).For the more general considerations seeA. van Wijngaarden, Large distortions of circular rings and straight rods I and II, Proc. roy. Acad., Amsterdam,49 (1946) 648. The author of the present article has adapted his method of calculation as far as possible to that of Van Wijngaarden.Google Scholar