design stress

design stress

[di′zīn ‚stres]
(design engineering)
A permissible maximum stress to which a machine part or structural member may be subjected, which is large enough to prevent failure in case the loads exceed expected values, or other uncertainties turn out unfavorably.
References in periodicals archive ?
Also provided are the shell design formulae in accordance to the 1 -foot method for product design stress and hydrostatic test stress.
This can be over 40 percent more than the original design stress and can lead to the complete collapse of the discharge cone or skirt region of the silo.
The revised guidance incorporates new design stress values for copper tube, which were not included in the original European Standard.
Every element was checked and verified not to exceed the allowable design stress of 225.
NSF/ANI Standard 14 requires materials for pressure pipe applications meet a minimum 50-year long-term strength requirement established through PPI's hydrostatic design stress.
Rd] is limit design stress, MPa and [sigma] is von Misses stress, MPa value for load combinations according to polish [[sigma].
The specific objectives were to: 1) derive average stress-life curves in the Adkins' equation format to examine and verify the fitting constants, 2) derive S-Ncurves using stress-life data points at the low 5 percent limit for wood composites, 3) estimate the section size of wood composite materials needed when being subjected to cyclic stepped loads using the 5 percent stress-life curves, and 4) determine the allowable design stress as a percentage of MOR when considering cyclic stepped load effects.
Value added services include electronic data interchange; design for manufacture; computer aided drafting; cost reduction engineering; spring design stress analysis.
The design stress and the useful service lifetime (durability) of PE pipes are typically estimated by performing creep rupture tests at multiple temperatures.
Therefore, in situations where work stress is unavoidable, it may be possible to design stress management interventions and augmented cognition strategies at the individual level to increase resilience and improve language performance under conditions of stress and fatigue.
Design stress in the creep range is a function of operating time and temperature.
These springs operate within recognized design stress limits, to assure a long service life.

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