Substructure

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substructure

[¦səb′strək·chər]
(civil engineering)
The part of a structure which is below ground.

Substructure

The foundation and footings as opposed to the superstructure.

Substructure

 

(or subboundary structure), in metals, the internal structure of grains characterized by the type, number, and arrangement of lattice defects.

In undeformed metal, the grains consist of blocks (subgrains) that are misoriented relative to one another by angles of the order of minutes of arc; the blocks are separated by subboundaries. The shape, size, and angular misorientation of the subgrains, as well as the length of the subboundaries, are important characteristics of metal substructure. The subgrains contain dislocations, which form arrays or are in a disordered arrangement. The arrangement of dislocations depends on the nature of the material and the “history” of the sample; for example, for small degrees of deformation, dislocations are concentrated in slip planes.

With increasing deformation in such metals as aluminum or iron, the dislocations form complex spatial networks. The type, structure, and arrangement of the dislocation arrays and the density of dislocations are also characteristic of metal substructure.

V. IU. NOVIKOV

substructure

The foundation or understructure of a building; supports the superstructure.
References in periodicals archive ?
Generally, in the substructure modal synthesis method, the vibration system's kinematics equation is converted into modal coordinate space equation and the higher modes of the substructures are removed.
op]}, with respect to the evaluation location, such as floor vibration in vertical direction, are measured at the connections, which are the input locations, of the substructures under driving condition.
Thus, the control effectiveness of the isolated model whose substructures are all isolated with the megastructures is better than that of the LSC model, in which the lower substructures are fixedly connected with the megastructure while the others are connected with the megastructures with isolators.
To investigate the influence of two substructures on the material behaviour, the propagation of a pulse in a one-dimensional medium, which can be interpreted as an elastic bar, is considered.
On the other hand, the members of the set IA of the maximally informative substructures of theory A are all essentially the same as the following:
The objective disc brake is divided into 6 substructures named A to F.
the construction project "half-sided replacement of the bridge substructures (east side) of the viktoriabrcke" is the third partial measure from the planned construction project for the "renewal of the viktoriabrcke".
The alliance enables SciQuest to significantly enhance its Web-based chemical database and functionality, giving researchers the ability to search by chemical structure and substructure, as well as properties such as molecular weight ranges and formulae.
Contract awarded for Delivery of the topside and steel jacket substructure for Valhall Flank West.
With a full lifecycle of services and an accountability-based approach, ENS helps enterprise and telecommunications clients create reliable, secure and scalable network substructures for their mission-critical e-business applicatioion on ENS is available at http://www.
85m acoustic grid ceiling 60 * 60cm with concealed support rails - substructures in corrosion class c4 (h) (l); Approx.
the existing building consists of 5 substructures: - substructure 1 east of f-kamen for the take-up of the stand strip and the extension strip as langerfeld, - substructure 2 inside rf-kamen to accommodate three lanes, - substructure 3 on the inside rf-cologne to accommodate three lanes, - substructure 4 west of rf-kln to receive the stand strip and the threading strip as langerfeld, - substructure 5 noise protection wall on substructure 4.