在最佳超塑性条件下,断口中形成了大而深的空洞,晶界滑动和晶间断裂特征明显。
The deep and large cavities are formed on fracture surface and grain boundary sliding and intergranular fracture characteristic is obvious on the optimal superplastic deformation condition.
这表明本文推导的计算公式是可行的,近似塑性条件对理论计算的挤压变形力具有显著的影响。
This indicates the formulas are feasible, and approximate plasticity conditions have the distinct effect on the value of extrusion force given by calculating formulas.
由于大应变和三轴张力的怍用,在许多韧性材料中将出现空洞的形成与扩展,从而产生塑性条件下的体积膨胀。
The effect of large strain and high triaxiality farours the initiation and growth of voids in many ductile materials. This causes volumetric dilatation in the plasticity.
换一个安静的环境可以缓解压力,有效降低皮质醇水平,并且为神经的可塑性创造更有利的条件。
Moving to a quieter place could help reduce stress, which in turn can reduce cortisol levels and create conditions conducive to neuroplasticity.
粗晶lc 4合金在较低温度和较高应变速率条件下,因能产生有效的再结晶细化,而呈现出一定的超塑性。
The coarse crystalline LC4 alloy exhibit some superplasticity under lower temperature and higher strain rate, because it can create effective recrystallization refinement.
以库仑定律作为强度破坏准则,破碎区边界上的弹性介质和它内部的塑性介质的破坏条件分别采用了不同的主应力函数。
Different functions for principal stress were used as elastic medium failure conditions at the boundary with the crushing zone and plasticity within the latter based on Coulomb rule.
随试验温度、压力条件的升高,岩石、矿物从脆性变形向塑性变形演变。
With the elevation of test temperature and pressure, the rocks and minerals were deformed from brittleness to ductility.
本文介绍了确定具有塑性予应变板材后继屈服条件的实验方法。
The experimental method for determine the subsequent yield condition of a sheet with plastic prestrain is introduced.
龙怀水库坝体存在渗漏问题,根据工程地质条件通过方案比选,采用塑性砼防渗墙防渗,防渗效果较好。
According to the seepage problems of Longhuai dam body and its geological conditions, the plastic concrete cutoff wall seepage was adopted to obtain better effect after scheme comparison.
用广义应力表达了框架柱的塑性屈服条件。
The plastic yield condition of frame column is rep - resented in stress resultants.
在平衡裂纹条件下,将塑性部分表达为该载荷与裂纹长度的函数。
Under the condition of equilibrium crack the plastic component of the displacement can be regarded as a function of load and crack length.
通过大量的弹塑性分析,提出了多层框架结构位移模式保持一致的条件和位移模式的确定方法。
By a great number of calculation and comparison, the displacement-pattern of frame structures is analyzed, and the consistent condition and definition method are provided.
扩散焊焊接中的塑性变形条件对接头性能有很大影响,目前对其影响规律缺乏系统认识。
Plastic deformation conditions have great influence on the diffusion bonded joint, but there was little knowledge about its rule.
研究了银氧化锡电触头材料的反应合成制备以及制备的银氧化锡电触头材料在大塑性变形加工条件下的组织均匀化过程。
The fabrication of silver tin oxide by reactive synthesis and the microstructure homogenization of reactive synthesis silver tin oxide in the severe plastic deformation were researched.
介绍了薄板拉深筒形件的塑性失稳条件,起皱的主要原因及防止措施。
The destabilization condition in plastic state, the main causes of wrinkling and the pre ven tion means in the sheet drawing process of tube-shaped parts have been intro duced.
本论文对目前用于边坡稳定性评价的主要方法进行了研究对比后,提出了考虑孔隙水压力条件下的边坡有限元塑性极限分析法。
Appraising the current methods of slope stability, the paper puts forward Finite Element Plastic Limit Analysis of the slope stability subjected to pore water pressure.
结果表明,疲劳裂纹是在残余拉应力和循环压应力作用下萌生和扩展的,压塑性变形是裂纹萌生和扩展的必要条件。
The result shows: the local residual tensile stress and cyclic compressive loading thrust fatigue crack initiation and propagation in the size of compressive plastic zone.
本文从两个不同的途径证明了刚塑性可压缩材料在非主轴条件下的塑性力学基本关系式。
The basic relationship of plastic mechanics of the rigid plastic compressible material under non-principal axis condition was finalized through two different approaches.
在静态电化学充氢条件下,材料的塑性随充氢时间的增加,依次降低。
After static electrochemical charging with hydrogen, the plastic properties successively decrease with the increase of pre-charging time.
给出了利用隐含对称条件的二维弹塑性边界元分析公式,并应用于弹塑性接触问题分析。
In this paper, boundary integral equation for elastoplastic problem with implicit symmetry conditions is developed and applied to elastoplastic contact problems analysis.
简要归纳了循环荷载作用下土体本构特性和循环塑性模型需满足的力学条件。
The constitutive behaviors of soils under cyclic loads and the mechanical requirements for cyclic plastic models are briefly summarized.
本文研究线弹簧型弱界面颗粒增强复合材料,在比例加载条件下的简化塑性模型。
A simplified model is proposed for plasticity in particle-reinforced composite materials with linear spring-type imperfect interfaces under proportional loading.
本文研究了单轴静拉伸条件下微孔损伤对塑性失稳的影响。
The effect of micro-damage on the plastic instability in uniaxial tensile testing has been studied in this paper.
粉末冶金材料屈服条件是广义塑性理论的重要基础。
The yield criterion for powder metallurgical materials was a key basis of generalized plasticity theory.
用比拟的方法分析和计算了爆炸焊接条件下,爆炸复合材料结合区中塑性变形金属的动态屈服强度值。
This paper analysed and calculated the dynamic yielding strength of plastic deformed metal in the bonding zone of explosive welding composite material in the condition of explosive welding.
当目标函数是塑性极限弯矩凸函数时,证明了这一最优性条件也是最优解的充分条件。
It is proved that the optimality conditions are also sufficient if the objective function is a convex function of the plastic limit bending moment.
用有限元方法对平面应力条件下弹塑性材料的裂纹尖端应力应变场进行了计算。
The crack tip stress-strain field of elastic-plastic materials are analysed by finite element method in the plane stress condition.
通过调整影响轧膜成型的条件,可以制得具有良好可塑性、均匀度、致密度、光洁度的薄膜。
When the conditions of the roll forming process well controlled, the film of batter plasticity, homogeneity, density and smoothness can be acquired.
在高应变速率条件下,LY 12铝合金具有较好的超塑性和室温性能。
In higher strain-rate condition, LY12 alloy has good superplasticity and room temperature properties.
在高应变速率条件下,LY 12铝合金具有较好的超塑性和室温性能。
In higher strain-rate condition, LY12 alloy has good superplasticity and room temperature properties.
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