Results show that the shape of hydrostatic pressure versus nominal volumetric strain curve of the PU foam is an initial elastic regime followed by a long plastic plateau region and then a rapid increase with the foam densifying.
最后通过不同高度的试样对比试验，对聚氨酯泡沫材料的不均匀变形和弯曲的原因进行了分析和比较，指出了试验时应该注意的问题。
A correct configuration of extensometer in electronic universal testing machine is discussed as regards of extensometer structure, gauge length and measuring range, nominal measuring scale, output sensibility, absolute error of indicated value as well as strain error in the paper.
从引伸计的结构、标距和测量范围、标称量程与输出灵敏度、示值的绝对误差和应变误差等几个方面论述电子万能试验机引伸计的正确配置。
It is found that with the increase of cycles the maximum compressive strain in each cycle increases and the maximum nominal tensile strain in each cycle decreases.
发现了单周最大压应变随周数的增长而持续增大，单周最大名义拉应变随周数增长而持续减小的重要现象；
The method has the advantage of nominal stress method and local strain method to counteract themselves weakness.
这样，同时运用了名义摩力法和局部应力、应变法的优点，使寿命计算更合理。
The results of the fatigue life calculation are compared with experimental ones and itis thought that the local strain method is a better fatigue information life estimation method, but the traditional nominal stress method still has its use value in engineering.
最后，本文把按局部应力-应变法及名义应力法所得疲劳寿命计算结果与已有的试验结果进行了分析比较。
By applying nominal stress method and local stress-strain method, the fatigue life prediction model of rolling ring is built.
应用名义应力法和局部应力应变法，建立了滚圈疲劳寿命预测模型。
By analyzing the local stress and strain of the notched specimen with a centre hole subjected to monotonic and cyclic loading using 3-D elasto-plastic finite element, the multiaxial mechanical responses of the notched specimen as well as their changes with the nominal stress (amplitudes) were investigated.
通过对单调和循环加载下中心孔缺口试样的3-D有限元数值模拟，研究了缺口多轴局部应力、应变响应及其随名义应力（幅）的变化规律；
The four styles of S-N curve approach which are applied in actual cases are reviewed in the paper: nominal stress method, hotspot stress method, notch stress method, notch strain method.
简述了S-N曲线法在实际分析中所采用的四种类型：名义应力法、热点应力法、切口应力法和切口应变法；
Given in this article are the theoretical fundamentals of the estimation of service life of welded structural members; the difference in esti - mation of member service life by ways of nominal stress and local stress-strain analysis.
本文阐述了焊接结构构件寿命估算的理论基础，分析了用名义应力法和局部应力应变法估算构件寿命的区别，指出后者优于前者。
After initial linear elastics up to a nominal yield point, tensile stress still increases in a linear manner with the increasing strain before reaching the high ultimate strain.
这种FRP缠绕筋的拉伸性能呈明显的双线性，即应力在通过名义屈服点后，继续按线性规律随应变的增加而增加，直至应变达到极限。