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PRACTICAL CALCULATION METHOD FOR STABILITY

Lecture



The stability of compressed rods is based on the requirement that the allowable stress should be less than the yield strength   PRACTICAL CALCULATION METHOD FOR STABILITY .
Dividing the yield strength in compression   PRACTICAL CALCULATION METHOD FOR STABILITY on the safety factor for turnover n t we get the allowable compressive stress for short rods (type of samples):
  PRACTICAL CALCULATION METHOD FOR STABILITY
Now it is necessary to reduce this allowable voltage so that it is less   PRACTICAL CALCULATION METHOD FOR STABILITY . But critical stress   PRACTICAL CALCULATION METHOD FOR STABILITY depends on the flexibility of the rod   PRACTICAL CALCULATION METHOD FOR STABILITY (the more   PRACTICAL CALCULATION METHOD FOR STABILITY the less   PRACTICAL CALCULATION METHOD FOR STABILITY ) and from the rack material. These factors are taken into account in   PRACTICAL CALCULATION METHOD FOR STABILITY -reduction factor reduction ratio. Coefficient   PRACTICAL CALCULATION METHOD FOR STABILITY taken from tables depending on   PRACTICAL CALCULATION METHOD FOR STABILITY and material.
The permissible compressive strength for a flexible rod is determined by the formula
  PRACTICAL CALCULATION METHOD FOR STABILITY
Where   PRACTICAL CALCULATION METHOD FOR STABILITY - permissible compressive stress with regard to stability.
In fig. 8.3 the dashed line gives a graph of the dependence of the allowable stress of a joint on the flexibility of the rack   PRACTICAL CALCULATION METHOD FOR STABILITY .
There are direct and inverse problem design calculation.

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Stability of compressed rods

Terms: Stability of compressed rods