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.
The operational force at the connections of the passive substructure in each frequency discretization "[omega]" is
That is because the control devices installed between the substructure and megastructure can not only provide stiffness but also offer additional damping to the entire system.
The inset rendering is of the high bay lab space, which is located fully within the substructure, while also constructed on an elevated 4.
In the upper part of the mold, a reference seat was designed for keeping the substructure in the planned position during silicone processing.
It is heuristically obvious that each substructure gives its own contribution to the total material behaviour.
All the condensates were deposited in the same technological conditions, ensuring the formation of the nanotwinned substructure in the copper condensates (substrate temperature 260[degrees]C, the deposition rate of the condensates 2 [micro]m [min.
MSE) to undertake construction of a 40-story-high substructure at its Helang Gas Field off Sarawak, a Malaysian state on Borneo Island.
The mold substructure is also adjustable and permanently mounted.
detected a subtle effect hinting at such a quark substructure in debris scattered from high-energy collisions between protons and antiprotons (SN: 2/17/96, p.
A structure S is a substructure of a structure S' iff S' is either an extension, or an expansion, or an extension of an expansion, or an expansion of an extension of S.