本文研究了几种常见金属材料屈服前的微应变过程。
The microstraining prior to yield of several common metallic mate-rials has been studied.
在试验的基础上进一步探讨了岩石全应力-应变过程渗流特点之机理。
On the basis of tests, the mechanism of seepage characteristics of complete stress-strain process is discussed.
岩石的应变组构型式与岩石成分、变形环境和应变过程有着密切关系。
The styles of strain fabrics in rocks are closely associated with the components of rocks, the environment of deformation and the history of straining.
喷丸过程和随后的接触疲劳滚压过程同属在赫兹应力作用下的循环弹塑性应变过程。
Both shot peening and contact rolling belong to the cyclic elastic-plastic deformation process under the action of Hertz stress.
冻土的回弹动弹模，在土体应变过程中为非定值，应变大于1%之后趋于稳定，并随测定时的应变速率加大而变大。
In the process of deformation of frozen soil, the unloaded dynamic elastic modulus is not constant, and tends basically to steady after the strain is more than 1%.
金属在热成形过程中的微观组织演变是影响产品力学性能的关键因素，该演变过程取决于温度、应变和应变速率。
The microstructure evolution, which is governed by temperature, strain and strain rate during hot metal forming, is a key factor to the mechanical properties.
对切应变主轴不变的平面简单切变过程，通过无穷小应变的积分，导出了真实切应变计算公式。
An equation for the calculation of true shear strain was derived from the integration of infinitesimal shear strain in plane shearing process with constant principal shear strain direction.
当外加应力突然降低后，在瞬时蠕变过程中发生了弹性应变和滞弹性应变，整个降载过程中的应变变化值与应力变化值成线性关系。
During the transient creep after stress decrease, it has been found that the total strain transient consists of two components, elastic strain and anelastic strain.
红砂岩在加速蠕变过程中具有高度的非线性，蠕变应变率随时间呈现跳跃增长特性。
The accelerative creep shows highly nonlinear characteristics; and the creep strain rate displays a discontinuous form, which occurs in jumps change.
红砂岩在加速蠕变过程中具有高度的非线性，蠕变应变率随时间呈现跳跃增长特性。
The accelerative creep shows highly nonlinear characteristics; and the creep strain rate displays a discontinuous form, which occurs in jumps change.
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