The 25% stress represents the mid-point of Fitch's 'A' stress range
and it reflects Fitch's view of the A320 as a highly liquid aircraft.
It can be seen from the horizontal cross-section in Figure 5 that when the working surface is 10 and 30m, respectively, from the fault, the roof plate stress range
should cover the position of the fault zone, apparently affecting the fault zone stress.
Multiple static or dynamic load cases that represent a full duty cycle are applied to determine the mean stress, stress range
, and von Mises stress throughout the component.
The creep test was conducted in air at 750[degrees]C over the stress range
Under a low stress range
(<12 MPa), the bulk modulus decreases with increasing temperature.
Furthermore, according to the investigation on the fatigue performance deterioration of the heavy-haul railway bridges, firstly, an S-N model  is developed considering the rebar stress range--fatigue life relationship and stress ratio (the ratio of initial stress range
to stress range
to failure)--and fatigue life relationship, by observing the scale model of bridges under fatigue loading.
In contrast, the value of k varied in a relatively narrow range of 6.284E - 12 [m.sup.2]~6.2286E - 12 [m.sup.2] in a relatively high stress range
of 3.58 MPa to 4.38 MPa; this illustrates that the internal structure exhibits less sensitivity to the changes in the stress as the density increases.
Fatigue lives against the average accepted nominal stress range
data designed for the treated specimens and unpeened specimens are schemed to get the S-N curves which are appeared in Fig 7.
Hence, if a fatigue safety factor of 10 is used on the experimental data, the range of design life is between 2,000 cycles and 77,000 cycles considering a stress range
of 36% SMYS.
The size of these stress cycles is often described by the total change of stress, called stress range
. The number of cycles seen in service can be counted many ways, including rainflow cycle counting .
From a qualitative aspect, the stress-strain curve of green sandstone was nearly a straight line in the lower stress range
(Figure 1, (a)(b)), and after stress exceeds the elastic limit (Figure 1, (b)(c)), the stress increases with a decreasing rate.
This may include two stress components, but from the convenience and safety point of view is still in a stress range
, Figure 6 a), b), c) the midpoint line shown in curve is [P.sub.l]+[P.sub.b], the maximum value is 161.14 MPa, 107.85 MPa and 15.781 MPa respectively.