Supermarket shelf factory beam type effect how?

Supermarket shelves for supermarket how important it is! Aesthetics aside, supermarket shelves can help businesses better arrangement of goods put, merchants will be more easy to record the goods. The bondage of degrees of freedom despite shelves supermarket shelves factory beams is a space truss layout, but in the calculation of beam load demand when the calculation model is simplified to plane model. And because a larger than its modular heavy shelves beam span cross section dimension, so when accounting to beam is simplified to beam element in material mechanics, the beam of two degrees of freedom are the main points of the discussion. Each endpoint of beam with three degrees of freedom, that is, the translation of the x axis and y axis translation and change around the z axis, usually is the disposal measures to bring the two ends of the beam end may be fixed end as a hinge. As a hinged end disposal, bound for two endpoints of the translational degrees of freedom, but there is no constraint endpoint transformation degree of freedom. In this state, can beam axis relative to the original position change in the endpoint must point of view, and endpoint can will not be able to transfer torque heritability; When as a fixed end disposal, bound at both ends of a beam is all degrees of freedom. At the moment beam at the endpoints can neither translation also can't change, but can heritability and moment. Combined shelves beams and columns to choose a special plug type connection method, beam after 3 blade May 4 claws bolt embedded in the column in the hole. This cohesion method on the one hand, allow beams around the axis of the stress before, must change, on the other hand, demand beam endpoint can transfer load of column moment on the beam. This shows, the beams at both ends is simplified to a simple hinge fixed end is probably the end is not in conformity with the practice. The practice of the beam loading effect is some add some clamped hinge.
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