ultimate load

ultimate load

[′əl·tə·mət ‚lōd]
(mechanics)

breaking load, failure load, fracture load, ultimate load

The load which, if placed upon a structure or test piece, is just great enough to break it.

ultimate load

ultimate load
In stress analysis, the minimum load that in its last increment causes a physical breakdown in an aircraft or component during a strength test or a load that, according to computation, should cause such a breakdown. Normally, the ultimate load is higher than 1.5 to 1.7 times the normal load in flight.
From O to A the stress is proportional to the strain and A is the proportional limit. At B, elongation begins and the material becomes plastic. The yield point is thus at C, at which point the material begins to strain harden. Point D represents the maximum tensile stress or the ultimate strength. At E the fracture takes place. E is the ultimate load in this case.
References in periodicals archive ?
Summary results: mean ultimate load and mean load-deflection slope values and the related coefficients of variation are summarized in Table 3.
Furthermore, the tie-down ring system should have a 1.5x safety factor for ultimate load situations at 11,250 pounds, and of course, the legacy design could not meet that.
The results showed that, for all strengthened CFST models using one layer of CFRP sheet, CFRP had no significant enhancement in the ultimate load capacity when wrapped along 50, 75, and 100% of the length of the specimens.
According to the analysis of Table 8, the yield load/ displacement, ultimate load/displacement, and ductility ratio of members are all decreased to some extent after rebar corrosion, and the decrease of yield load/displacement and ultimate load is obvious.
Ultimate Load. Figure 8 shows the values of the ultimate load ([P.sub.u]) under moisture conditioning.
It can be seen that the strengthening effect for first-cracking load, steel-yielding load, ultimate load, and corresponding displacement of the beams UB-GR-300-T and UB-UG-300-T is inconspicuous comparing to the initially strengthened specimens UB-GR-0-T and UB-UG-0-T, as shown in Table 7.
The testing was load-controlled in the elastic stage, the increment of load was about one-tenth of the calculated ultimate load, and displacement control was used in the elastoplastic stage.
Compared to traditional straight-grip and push-button configurations, the new pendant control's rocker switch and comfort-fit design give operators ultimate load command while reducing hand strain and fatigue--allowing for safer and more efficient operation of hoists and industrial equipment with momentary operation.
Then the timber column drops until ductile crushing at ultimate load. While the ultimate load is reached, wood cell themselves fold into S shapes forming characteristic compression wrinkles due to local buckling of wood fibers become visible [5].

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