利用形状记忆合金的本构关系,分析了在自由应力状态下的残余应变与温度的关系。
The relationship between the residual strain and the temperature under free stress condition is analyzed by using constitutive relation of SMA.
研究表明在完全循环加载过程中,由于残余应变的存在,马氏体相变应力随循环增加而减小。
The research results show martensite transformation stress decreases with an increase in cycle due to the residual strain during full cyclic loading.
用应变片法测量了层板中铝层的残余应力;
The residual stresses were measured by means of strain gauges.
本文叙述了钻孔法测量残余应力过程中的附加应变。
For the process of residual stresses measurement, strains induced by drilling have been investigated.
标定试验结果表明,测点应变增量与残余应力间存在良好的线性关系。
The experiment results show that the measured additional strain keep a linear relationship with residual stress in the structure.
应变片钻孔法是工程中应用最广的残余应力测量方法之一。
Strain gage hole drilling method is one of the most popular residual stress measurement methods.
在焊接过程中产生的动态应力应变及随后形成的残余应力,是导致焊接裂纹和接头性能下降的重要因素。
The dynamic stress-strain and welding residual stress during welding are the significant factors which lead to welded cracking and debasement of the joint properties.
研究结果表明,弹塑性有限元分析法预测的寿命偏低,由残余应力可以较准确地确定最大应力应变循环。
The result shows that predicting life by elasticity-plasticity finite element analysis is low and the maximal stress-strain cycle can be calculated accurately by the residual stress method.
通过对身管自紧的残余应力、残余应变及残余位移分析,证明其计算结果与实验结果相当吻合。
It is proved that the computed results are in agreement with the experimental results by analysing the residual stress, strain and displacement of gun autofrettage.
用电阻应变片法测试了管棒材拉拔、矫直和退火过程中产品表面残余应力,研究了管棒材残余应力随工艺参数变化的规律。
The surface residual stress of tube and bar after drawing straightening and annealing, under different processing conditions, were measured by means of resistance strain gauge.
本文根据弹塑性理论基本方程,导出了高水平均匀残余应力场由于钻孔引起的松弛应变与残余应力的关系公式。
When a high level isotropic stress field is disturbed by a drilled hole, a relation of relieved strain vs. residual stress is derived by the basic equations of elastoplastic theory.
文中针对铝合金预拉伸厚板的特点,提出了测量其内部残余应力的方法,并运用弹性力学理论进行了理论推导,得到了应力-应变关系矩阵。
The modified removal method for measuring residual stress in thick pre-stretched aluminum plates is proposed and the stress-strain relation matrix is deduced by elasticity theory.
进而探讨了残余应力对弹性区材料表面应变释放的影响。
Furthermore, the influence of the residual stress to the surface strain of the material in the elastic zone is studied.
在此基础上,对复合材料的拉伸应力-应变曲线进行了考虑热残余应力的有限元预测。
Based on the analyzed results, the tensile stress-strain curves of the composites were predicted with or without the residual stresses considered.
目前通过应变增量计算残余应力的方法仍然是通过事先试验标定,测量超强或低强匹配焊缝中的残余应力时采用的仍然是母材的标定系数,因而会带来严重误差。
The great error could be produced in measuring the residual stress in a weld with the use of calibration coefficient for the base metal instead of the weld metal.
介绍了小孔释放法测量残余应力的原理,给出释放应变与残余应力之间的关系公式。
The theory on the measurement of the residual stresses by the hole drilling method was introduced, and the relationship between the relieved strains and the residual stresses was given.
针对钻孔法测量残余应力方法中变形测量存在的误差,提出用光栅应变花测量钻孔所释放的残余应变。
For eliminating the errors in deformation measuring and improving the accuracy in hole-drilling method, this paper presented an optical technique, grating rosette and moire interferometry.
分析了恒载和常温无应力作用对智能筋中光栅残余应变的影响,研究了智能筋的传感稳定性问题;
Through experimental analysis of sustained load and room temperature unstressing action influence on residual strain of smart rebar, sensing stability of smart rebar is studied.
对存在热残余应力时复合材料的应力—应变曲线进行了模拟;
The tensile stress -strain curves of composites were also simulated.
根据弹性力学原理,基于应变不匹配,提出了一种可以预测薄膜残余应力分配的理论模型计算方法,并将计算结果与干涉仪测量值进行了对比。
Based on the principle of elasticity and strain misfit, a new calculation method of theoretical model to predict the residual stress distribution on optical thin films is put forward in this paper.
应变片钻孔法是工程中应用最广的残余应力测量方法之一。
Residual stress distribution of FSW has high gradient, which makes the conventional strain gauge hole drilling method unsuitable.
在平面应变压缩条件下,砂土在峰值应力状态附近出现应变局部化现象,在残余状态最终形成一条V型剪切带。
Under plane strain condition, the strain localization starts around the peak stress state; and a V-shaped shear band is formed at the residual stress state.
在加工表面上存在着残余应力和残余应变,且残余应力和残余应变随着与刀尖和已加工表面之间距离的增大而减小。
There were remnants strain and stress in the finished surface and the remnants strain and stress decreased with the distance of tool tip and the finished surface increased.
计算中考虑了残余应力和初始几何缺陷的影响,应力应变关系取理想弹塑性本构关系。
The effects of the residual stress and the initial geometrical defects were considered during the calculations, and an ideal elastoplastic constitutive relation was taken as …
提出了一种避开瞬态温度场测试而通过残余应力计算得到最大应力应变循环的方法。
In order to avoid the difficulty and expensive measurement of transient temperature field, a method for maximal stress and strain cycle calculation using residue stress is proposed.
应力应变测试表明:焊缝与熔合区是残余应力比较集中的地方,热影响区的残余应力比较小。
Stress-strain tests show that: the weld residual stress and the fusion zone is relatively concentrated, the residual stress of the heat affected zone is relatively small.
用弹塑性有限元法分析超速预过载处理后叶轮的残余位移、应变及应力场 ,给出相应的求解结果。
We used periodic symmetry constraint on FEA Model. Elastic plastic finite element principle used in analysis process.
用弹塑性有限元法分析超速预过载处理后叶轮的残余位移、应变及应力场 ,给出相应的求解结果。
We used periodic symmetry constraint on FEA Model. Elastic plastic finite element principle used in analysis process.
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