结构薄弱部位的形成，往往是由于刚度突变和屈服强度比突变所造成的。
The formation of the structure's weakness position always due to the discontinuity of stiffness and the yield strength ratio.
重点研究了平压头压入过程中，不同屈服强度比（软薄膜屈服强度与硬基体屈服强度之比）以及不同压头尺寸下硬基体对压痕规律的影响。
The emphasis was put on the critical indentation depth with the influence of the yield strength ratio of the soft film to the harder substrate and the size of the indenter.
受非马氏体组织的影响及可动位错密度降低的作用，屈服强度、屈强比随退火温度升高而升高。
The yield strength, yield ratio increase with the increase of annealing temperature, due to the impact of non-martensite and the decrease of movable dislocation density.
屈服强度、屈强比、韧性等是钢管(板)的主要质量指标，合理确定这些指标的数值有相当难度。
The yield strength, yield tensile ratio and toughness are major quality indexes of steel pipe (board). However, it is quite difficult to determine them reasonably.
母材纵向的屈服强度及其屈强比均有上升趋势；钢管母材横向和纵向抗拉强度都呈上升趋势。
The ultimate tensile strength(UTS) both in transverse and longitudinal of pipe body showed the trend for rising.
例如，纳米结构陶瓷比粗晶粒陶瓷有较好的韧性和较高的强度。纳米相金属在屈服强度和弹性模量方面有显著的增加。
For example, nanostructured ceramics are tougher and stronger than the coarser grained ceramics. Nanophase metals exhibit significant increases in yield strength and elastic modulus.
相同轴压比条件下，构件达到屈服荷载后，构件的承载力和刚度都随混凝土强度等级的增大而提高。
On the condition that same axial compression ratio, bearing capacity and stiffness of RC frame columns increases with concrete strength grade after the construction member achieve yield strength.
管体屈服强度和屈强比有明显变化，其主要影响因素是防腐前的中频加热温度。
There is clearly changed on yield strength and ratio of yield and tensile strength and the main affecting elements is middle frequency heating temperature before coating.
本文运用莫尔屈服准则对承受内压的拉压屈服强度不同材料的厚壁圆筒进行了自增强分析，得到了依赖于材料拉压比的厚壁圆筒的最佳弹塑性界面半径、最佳自增强内压。
This paper makes the optimum autofrettage analysis of thick-walled cylinder of the material with different yield strength in tension and compression base on the Mohr's yield criterion.
屈服强度、抗拉强度、加工硬化指数和塑性应变比厚向各向异性降低，塑性应变比平面各向异性增大；
Yield strength and ultimate tensile strength, work hardening exponent and normal anisotropy of plastic strain ratio decrease but planner anisotropy of plastic strain ratio increases.
屈服强度、抗拉强度、加工硬化指数和塑性应变比厚向各向异性降低，塑性应变比平面各向异性增大；
Yield strength and ultimate tensile strength, work hardening exponent and normal anisotropy of plastic strain ratio decrease but planner anisotropy of plastic strain ratio increases.
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