1) principal deviator stress
主偏应力
1.
In this paper, based on the the idea of deviator stress state and the effects of hydraulic stress for material strength, a new version of generalized principal deviator stress strength criterion was obtained.
本文以主偏应力状态为依据，考虑静水应力对材料强度的影响，推导出了一个广义主偏应力强度准则，并与常用的强度理论进行了比较，得到了较为满意的结果。
2) principal stress deflection
主应力偏转
1.
Based on the principal principle that sliding wedge completely existed in static equilibrium state and all friction angles between soil and wall were assumed to get limit value,by analyzing the principal stress deflection of soil on wall surface,the formulas for calculating principal stress deflection angle and coefficient of lateral earth pressure were obtained.
根据库仑土压力理论中墙背滑动楔体整体达到静平衡的基本原理,假定沿墙高方向,土与墙背的摩擦角均达到极限值,从墙背处土体主应力偏转的应力状态分析出发,得到墙背处的主应力偏转角和土侧压力系数的计算公式;把土侧压力系数用于水平层分析法,建立了竖向土压力的基本方程,求解该方程,导出了挡土墙主动土压力、土压力合力及其作用位置的理论公式。
3) angle of principal stress rotation
主应力偏转角
4) deviator stress
轴差应力;偏应力;主应力差
5) deviatoric stress
偏应力
1.
Taking the hydrostatic pressure together with the deviatoric stress into consideration, the critical criterions of phase transformation have been established for “stress induced” and “strain induced” phase transitions.
同时考虑静水压力和偏应力的影响,分别建立了“应力诱发”和“形变诱发”相变的临界准则。
2.
Cyclic triaxial tests are conducted on saturated sand in drained condition with cyclic loading and unloading of deviatoric stress and constant spherical stress.
在固结排水条件下保持球应力不变,进行了偏应力往返作用下的动三轴试验,分析了饱和砂土的体积变形特性。
3.
The test results show that the soil-water characteristic curve is dependent on deviatoric stress.
用净平均应力和吸力等于常数、偏应力增大的三轴排水剪切试验,探讨了剪切对非饱和土水量变化的影响。
6) deviation stress
应力偏量
1.
Comparing with these viscoelastic strain increment expressions,it is concluded that for linear viscoelastic model,if the viscoelastic deformation law under different stress states,such as stress tensor,deviation stress and bulk stress,are the same,their parameters yield as Ek/ηk=Gsk/ηsk=Kmk/ηmk.
对不同应力分量下的广义开尔文模型应力应变关系进行了研究,推导了在不同应力分量下的广义开尔文模型的粘性应变增量计算式;通过对这些粘性应变增量计算式的比较分析,得到结论:对于线性粘弹性模型,当应力张量引起粘性变形的规律与应力偏量和球应力分别引起粘性变形的规律相同时,它们的系数满足关系式Ek/ηk=Gsk/ηsk=Kmk/ηmk;否则,这个关系式不成立。
2.
The viscoelastic deformation law caused by deviation stress is the same as the bulk stress s viscoelastic deformation law when the viscoelastic deformation FEM formula is expressed by stress tensor in existing documents.
现有文献采用应力张量表示的粘性变形有限元计算式隐含假定了球应力与应力偏量产生的粘性变形规律相同,对于复杂的工程材料而言,这种假定并不总是合适的,这在工程问题粘性分析时值得注意。
补充资料：偏应力张量
偏应力张量
deviator stress tensor
P iany一ng{1 Zhang{iang偏应力张量(deviator stress tensor)从应力张量中扣除球应力张量所剩余的应力张量，用符号衅表示。即 f叮_乙一T__、「汀_00、 TP~T_一T竺一丈r_.民「r__卜一l门氏0卜 戈z及r，2几夕七UU口m夕 r(叮_一叮~)乙「_r__、 一人r~，LJ，一口rrjr之 、rJ之r尹气几一J。)少 ra仁T-_r__、 ~人r一，.『.r~.汁 Lr{口几二爪夕 偏应力张量只引起变形物体的形状变化而不引起体积的变化。 偏应力张量存在以下三个不变量: I’l~武+心+试一常量 I’z一一(叭。今+弓成+a，z乙)+魂+续+心一常量 I’s二游a，xa，z+2场殊几 一a，x味一心谁一成魂一常量 这三个常量分别称偏应力张量一次不变量、偏应力张量二次不变量和偏应力张量三次不变量。其中偏应力张量二次不变量乃可作为开始塑性变形的判据。 (王占学)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条