isotope 发表于 2025-3-30 09:55:34

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迅速飞过 发表于 2025-3-30 13:44:08

Microscopic processes of creep,ope, with simple crystallographic nets: close-packed hexagonal as Mg, Zn, Ti; face-centered cubic (which is another close-packed structure for a set of spherical atoms), as Al, Cu, Ni; or body-centered cubic as Fe (below 911ºC), Cr, W. The macroscopic behavior of metals will allow us to define some basic concepts.

nettle 发表于 2025-3-30 20:01:47

Variational theorems and the finite element method, (which may be vectorial) has to obey. In many cases, these equations are equivalent to the condition that the variation of some functional .(.), when . is modified by an infinitesimal quantity from its correct value, is zero to the second order. (This condition is written as δ. = 0.)

entitle 发表于 2025-3-30 23:43:29

The rigid-plastic model,sible strain, the plastic strain, which adds to the elastic strain; (2) when the load increases further monotonically, the plastic strain increases monotonically too; but, when the load is kept constant, the strain remains constant, there is no creep.

JAUNT 发表于 2025-3-31 01:27:21

Viscoelasticity and transient creep,troduced. The principle of local action (Section 5.1) will always be assumed. Therefore, the constitutive relationship involves the values at some material point of the diverse variables and of their space derivatives of low order only. Nevertheless, it may include not only the actual values, but the past ones, ..

盟军 发表于 2025-3-31 05:44:35

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opalescence 发表于 2025-3-31 11:45:06

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羊齿 发表于 2025-3-31 14:47:46

Die historische und zeitgenössische Debatte über Wertet, dass Werte in öffentlichen Diskussionsprozesen herausgearbeitet werden und dabei aber auch moralische Empörungen und darauf basierende gesellschaftliche Unruhen und Konflikte eine wichtige Rolle spielen.
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查看完整版本: Titlebook: Very Slow Flows of Solids; Basics of Modeling i Louis A. Lliboutry Book 1987 Martinus Nijhoff Publishers, Dordrecht 1987 Deformation.contin