研究了非均匀应变对低维量子结构的能带和TE模光增益所产生的影响。
The effects of inhomogeneous strain on the band structure and te mode gain were studied for low dimensional quantum systems.
分析了热模拟变形过程中的非均匀应变对奥氏体动态再结晶及晶粒尺寸的影响。
The effect of uneven distribution of strain during compression on dynamic recrystallization and grain size of austenite was analyzed.
当非均匀应变场作用在光纤布拉格光栅(FBG)上时,由于FBG周期和有效折射率在沿FBG长度方向都为变量,所以会导致光谱形状的变化。
The spectrum of fiber Bragg grating(FBG) in inhomogeneous strain fields is distorted due to its inhomogeneity of both the periods and the effective refractive index.
本文对于这个工程问题的理论分析模型——均匀应变模型做了进一步分析讨论,并进行了数值仿真计算,得到了胶粘剂性质变化对驱动效果的影响情况。
This paper analyzed further the Uniform Strain Model and made the numerical simulation. The effect was got with the character change of the bonding layers.
通过对石泉电厂2号机组推力轴系的应力—应变调整,使2号机组的推力轴瓦受力均匀,保证了机组的安全稳定运行。
Through the stress - strain adjustment of unit 2, Shiquan Hydropower Station, the thrust bearing pad of unit 2 has been stressed uniformly, and the safe operation of unit 2 is ensured.
结果表明,孔隙率不变的情况下改变增强体上孔排布方式,可以获得均匀分布的的表面应力和应变;
The results show that the homogeneous stress and strain profiles can be obtained by adjusting the distribution of hole for a given number of holes on the surface of the reinforcement.
采用薄板弯曲理论研究了均匀载荷作用下多晶金刚石方膜在小挠度和大挠度下的应变分布情况。
The strain distribution based on small and large deflection theories of diamond square diaphragm was studied using theories of plate bend.
得到了均匀形变阶段和非均匀形变阶段的真应力应变关系。
The stress-stain relation for homogeneous stage and inhomogeneous stage of deformation were obtained.
试样内部各部位的应力大小分布不均匀,随应变速率的增大,最小应力值由自由变形的鼓形区域逐步向心部移动;
The effective stress of specimen is inhomogeneous. As the strain rate increases, the minimum stress value moves from the drum-shaped region to the heart of specimen.
通过水泥砂浆模型实验,得到了理想的名义不偶合系数与切缝宽度,测试分析了不均匀的动态应变场。
Through model experiments, reasonable decouple coefficient range and slot width are gotten, and unsymmetrical dynamic strain field is analyzed.
这种声学反常行为可以用均匀弹性应变场与软模坐标涨落的非线性耦合来解释。
The conclusion is that this acoustic anomaly may be interpreted by nonlinear coupling of the elastic strain field to the fluctuation of the soft-mode coordinate.
结果表明,波导层内含有均匀分布的三维应变场,晶格常数的变化随着波导取向的不同而呈现各向异性特点。
It is found that the waveguide layer contains uniformly distributed three dimensional strains and the variation of lattice constants in the waveguide depends closely on the waveguide orientation.
利用这种方法得到的曲线不仅具有较小的应变能,而且曲率变化比较均匀,具有很好的光顺效果。
The curve faired by this method tends to possesses smaller strain energy and rather uniform changes in curvatures.
在它的作用下,块体边界或某些部位出现应力不均匀并有应变能的积累。
The stress non uniformity and accumulation of energy on the boundary or in certain parts of some blocks appear.
因此,应变梯度,因此有关梯度的力学性能有着密切的联系氢气所产生的非均质性非均匀干燥在一层的材料。
So, the strain gradients and consequently the related gradients of mechanical properties are closely linked to hydric heterogeneities generated by non-uniform drying in the layer of material.
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.
还讨论了材料各向异性、应变率敏感性、不均匀性及其幅度、惯性等因素对塑性失稳的影响。
The effects of anisotropy, strain rate sensitivity, imperfection and its amplitude and inertia on plastic instability are discussed.
用三维有限元数值模拟软件DEFORM-3DTM进行了数值模拟研究,得到了锻造载荷-行程曲线以及整个成形过程的应力和应变分布等,并与传统的均匀加放余量法进行了比较。
At the same time, 3D-FEM simulation of the whole process was performed using DEFORM-3DTM software. And the load-stroke curve, effective stress and strain distribution, and so on were obtained.
超塑性胀形控制有各种方法,本文介绍了一种按气压与高度曲线控制的方法,使成形过程更接近于等应变速率胀形,能进一步改善零件厚度的不均匀性。
This paper introduces a method to controll a superplastic bulging by a gas-pressure and a height curve. This method can significantly reduce the thinning rate and unevenness of bulging material.
在相同的平面应变下,塑性弛豫引起的电荷分布不均匀性变化小于弹性变形。
The variation is smaller in plastic relaxation than the elastic one under the same in-plane strain.
传统的自动网格法常采用均匀布点法,这对应变集中区域的变形测量极为不利。节点过多,检测精度会下降;
Traditional automated grid method often adopts uniform grid method , which is unfavorable for the displacement measurement in stress concentration field.
冷变形提高了钢中位错密度,也加剧了位错分布的不均匀性,后者是预应变加速组织演变的直接原因。
Cold deformation results in increasing of dislocation density and inhomogeneous dislocation distribution, the latter is the direct reason for pre-strain to promote microstructural evolution.
本文用弹塑性大应变的有限无法对几种不同介质中均匀胀膨球的应力、应变和位移场作了计算。
A computer program of isoparametric finite element for large elastisplastis strain was used to calculate the displacement-strain fields of a homogeneous expansive sphere in many-layer medium.
试样的轴向应力和应变均匀问题是霍普金森杆试验行之有效的必要条件,而这对肌肉类粘弹性超软材料尤为重要。
The validity of a SHPB test is based on the assumption of stress and strain uniformity within the specimen, especially when muscle-like viscoelastic exter-soft material is tested.
发现缺口前沿各点的应变速事分布足很不均匀的,并随加载时间而改变。
It was indicated that the strain rate is distributed unevenly and changes with loading time.
应变波通过铁磁性杆件时,由于压磁效应,可以激发出不均匀的磁流。
When strain waves pass through a ferromagnetic bar, owing to piezomagnetic effect, a nonuniform magnetic current will be stimulated by the strain wave simultaneously.
适量增加铸坯厚度,并在较靠前的机架分配较大的压下量有利于提高轧制过程的应变均匀性。
The uniformity of deformation during hot rolling could be improved by properly increasing the slab thickness and adopting large reduction rate in first several rolling passes.
此外,还简化了钢筋应变不均匀系数的计算公式。
The coefficient proposed in this paper has clear geometrical and physical meanings. Furthermore, the formula for calc…
此外,还简化了钢筋应变不均匀系数的计算公式。
The coefficient proposed in this paper has clear geometrical and physical meanings. Furthermore, the formula for calc…
应用推荐