strength reduction


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strength reduction

An optimisation where a function of some systematically changing variable is calculated more efficiently by using previous values of the function. In a procedural language this would apply to an expression involving a loop variable and in a declarative language it would apply to the argument of a recursive function. E.g.

f x = ... (2**x) ... (f (x+1)) ...

==>

f x = f' x (2**x) where f ' x z = ... z ... (f' (x+1) 2*z) ...

Here the expensive operation (2**x) has been replaced by the cheaper 2*z in the recursive function f'. This maintains the invariant that z = 2**x for any call to f'.
References in periodicals archive ?
The as-molded PDO specimens exposed to PBS overnight had a yield strength reduction of 11.5%, an elastic modulus reduction of 18.6%, and an elongation increase of 3.5%; compared with dry condition test results.
The principal difference between these two analyses approaches is that the LE methods are based on the static of equilibrium whereas Finite Difference (FD) method utilize strength reduction method.
Increasing the fly ash content for mortar FA325 and FA400 showed a reduced rate of strength reduction. The compressive strength of mortar FA400.50, FA400.60 and FA400.70 are almost the same, showing that increasing the fly ash replacement ratio only slightly reduce the quality of mortar.
As it was mentioned before, chemical corrosion is not the main reason for tensile strength reduction of alkali resistant glass.
where [c.sub.1] is the factor to account for the aggregate interlock effect in concrete cohesion, [k.sub.1] and [k.sub.2] are the interaction factors for tensile force and flexural resistance generated in the transverse reinforcement, [f.sub.cd](=f'/1.5) and [f.sub.yd](=[f.sub.y]/1.15) are the design compressive strength of concrete and design yield strength of reinforcement, [[beta].sub.c] is the factor for the strength of the compression strut, and ] is the strength reduction factor of concrete.
refer to these types of soils as "calamitous soils" [9], which is the soil with special characteristics in relation to shrinking, swelling, fissures, and strength reduction. Expansive soils are also associated with swelling when they absorb water and shrink upon evaporation of water [12].
These regions are same regions where the tensile strength reduction is observed based on mold flow analysis due to poor fiber orientation and presence of knit lines which lead to almost 50% strength reduction in coupling.
[4] have reported strength reduction of corroded deck plate in 20 years old ships under uniform long itudinal compression.
The strength reduction finite element method provides incomparable advantages over the limit equilibrium method.
Lastly, the report examines long-term strength reduction factors and discusses differences between current practices for GRS and mechanically stabilized earth design.
Also included in the "Best of Ground Control" group is "A Case Study of Multiseam Coal Mine Entry Stability Analysis Using the Strength Reduction Method" by Ihsan Berk Tulu, Gabriel S.
When considering a common construction detail, the user had to refer to multiple chapters governing issues like nominal flexure, axial length, nominal shear strength, strength reduction, tie spacing and bend details, or lap splices.

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