助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   弹性记忆 的翻译结果: 查询用时:0.009秒
图标索引 在分类学科中查询
所有学科
更多类别查询

图标索引 历史查询
 

弹性记忆
相关语句
  elastic memory
     The influence of silica level on the rheology, elastic memory, curing behaviour, equillbrium stress-strain and dynamic mechanical properties of silica-reinforced ENR was studied.
     研究了白炭黑用量对环氧化天然橡胶(ENR)流变性能、弹性记忆、硫化特性、平衡应力-应变及动态力学性能的影响。
短句来源
     This is a discussion on the form and effective factors of polymer materials elastic memory effect and orientation structure with heat-shrinkage. It also discusses about tube expanding stability,heat-shrinkable tube density and its storing stability.
     本文着重讨论高分子材料弹性记忆效应、取向结构与热收缩性的形成及影响因素,并论及扩管稳定性、热收缩管密实性和热收缩管贮存稳定性。
短句来源
  “弹性记忆”译为未确定词的双语例句
     Development of Polyurethane Series Elasticity Memory Material
     PU系列弹性记忆材料的开发
短句来源
     The Barus effects reached the minimum at lower shearing rate within 120-140℃.
     在 120—140℃低切变速率下操作,胶料的弹性记忆效应最小。
短句来源
     Polyurethane (PU) with good elasticity-memory and shape-memory can be obtainedby means of molecular structure design. This kind of PU had a glass transition temperatureranging from-30 ℃ to 70℃ and a maximum modulus ratio of 180. The structrure-designing principle and preparation of the material were presented.
     通过分子结构设计,可得到具有良好的弹性记忆功能及形状记忆效应的聚氨酯材料,其玻璃化温度为-30~70℃,最大弹模量之比为180。
短句来源
  相似匹配句对
     Development of Polyurethane Series Elasticity Memory Material
     PU系列弹性记忆材料的开发
短句来源
     A Description for Pseudoelasticity and Shape Memory Effect of SMA
     SMA 伪弹性和形状记忆特性的描述
短句来源
     Roaming About In My Memories
     记忆漫步
短句来源
     MEMORY OF SALT WORKS
     盐场记忆
短句来源
     ELASTICITY MODEL FOR SCALING GAS TURBINE PERFORMANCE PREDICTION
     燃气轮机弹性数学模型
短句来源
查询“弹性记忆”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  elastic memory
It is developed from high elastic memory nitinol and applies light and continuous force.
      
The experimenter requires 30-90 s to manipulate the Instron to secure sample tautness, during which time it is shrinking, due to elastic memory.
      


First, we cannot but talk in a few words about rheological fracture, because of this subject is generally understood as a self-contradictory one. In fact, Griffith's works just sixty years ago signaled the beginnings of a mechanics of fractcture, he realized and investigated the beginnings of a mechanics of fracture, he realized and investigated the phenomena of rupture and flow in solids. However it must be remembered that rheological mechanics sixty years ago was not well developed. Today from rheological...

First, we cannot but talk in a few words about rheological fracture, because of this subject is generally understood as a self-contradictory one. In fact, Griffith's works just sixty years ago signaled the beginnings of a mechanics of fractcture, he realized and investigated the beginnings of a mechanics of fracture, he realized and investigated the phenomena of rupture and flow in solids. However it must be remembered that rheological mechanics sixty years ago was not well developed. Today from rheological mechanics we know that any material may be caused to flow by varying temperature and force field. If defined as isotropy group of the material at particle Ⅹ, with respect to the reference configuration, then solid is a material whose isotropy group is the orthogonal group and fluid whose isotropy group is the full unimodular group. All continuous deformations form a symmetric group. At rupture, the nature of the group changes. In other words, the change into a state of rupture may be interpreted as an asymptotic phenomenon which imposes a constraint on the invariants of the field tensor. In this new light, flow and rupture are all physical quantities, and any physical quantity has a mathematical background itself. The mathematical background of flow can be in terpreted as a mapping of one topological space into another and of rupture is then the corresponding mapping should become singlar, because of at rupture the macro-element breaks down, and the mo Julus of transformation tends to infinite. Therefore. they are relative, with one another. Rheological fracture is rest upon this mathematical background.The conclusion of our other article is that the fracture is a purely rheological process not influenced by surface energy, but yet the introduction of surface energy into the continuum description of the fracture process forces a major departure from the mechanics appropriate to the non-separation body. We realized that by virtue of this additioncd term however, the possibility of obtaining a corresponding local balance equation directly as a derived consequence of the global balance statement, as is customary in classical continuum mechanics, is lost. They must instead be imposed additional postulates about separating. When a separating body is viewed as a non-equilibrium irreversible thermodynamic process, the full thermodynamic nature of the surface energy induced by crack propagation becomes apparent.Aug mechanical process in a rheological material produees dissipated energy. Thus, in order to properly describe the propagation of a crack it is necessary to consider the rheological solid mechanically as a dissipature type media, and so in the global energy balance law must inclusion the rate-of-energy dissipation term which represent the behavior of rheological materials. According to the character of the surfaces of a propagating crack, the balance equations are material rate equations.Moreover, we have already known from continuum thermodynamics that irreversible processes must be associated with entropy production. Irreversible crack propagation will then, under some conditions, contribute the entropy content to the separationg body, and fracture, in order to be properly viewed, should be viewed as a rhological process with memory.The insights that have been raised here. which not only concerned with thermodynamic first law but second law. require explanation and mathematical argument if rheological fracture is to be given a proper theoretical basis. In this paper, this theoretical basis of rheological fracture is given.We have shown that the thermorheological material with memory can be defined as aviscoelastic material with memory according as thermorheological material response, it only necessary exists certain relation between the time and the temperature history. By virtue of the planestrain crack growth relations can be applied even when the global state of body is one of plane stress, it is only necessary that the failure zone be small enough for the neighborhood of the crack-tip to be in plane strain. Th

首先,关于流变断裂我们不能不说几句,因为这个课题一般被理解是自相矛盾的。实际上,整六十年前Griffifh的工作标志着断裂力学的开始,他那时就认识到并研究了固体中的破裂和流动现象。可是必须提及,流变力学在六十年前还没有很好发展起来。今天,我们从流变力学知道,由于温度和力场的变化可引起任一材料发生流动。若将(?)定义为质点×存参考构形(?)的实质迷向群,则固体是迷向群为正交群的材料,而流体就是迷向群为全幺模群的材料。整个连续变形形成对称群。破裂时,群的性质改变。换句话说,可以把变到破裂状态看作是一种渐近现象,它给场张量不变量以限制。在这个新的看法中,流动和破裂都是物理量,而任一物理量都有它自身的数学背景。流动的数学背景可视为从一个拓扑空间到另一拓扑空间的映射,而破裂的数学背景则是相应的映射变为奇异的,这是由于破裂时宏观组元破坏,变换模趋于无穷大的缘故。从而,它们是彼此相关的。流变断裂学就是建立存这个数学背景上。我们另一文的结论是,断裂是不受表面能影响的一个纯粹流变过程。可是,把表而能引入断裂过程的连续统力学描述中,才主要地使它从适用于未裂体的力学独立出来。但我们认为,由于这项引入,使得经典连续统力学惯刚的把相应...

首先,关于流变断裂我们不能不说几句,因为这个课题一般被理解是自相矛盾的。实际上,整六十年前Griffifh的工作标志着断裂力学的开始,他那时就认识到并研究了固体中的破裂和流动现象。可是必须提及,流变力学在六十年前还没有很好发展起来。今天,我们从流变力学知道,由于温度和力场的变化可引起任一材料发生流动。若将(?)定义为质点×存参考构形(?)的实质迷向群,则固体是迷向群为正交群的材料,而流体就是迷向群为全幺模群的材料。整个连续变形形成对称群。破裂时,群的性质改变。换句话说,可以把变到破裂状态看作是一种渐近现象,它给场张量不变量以限制。在这个新的看法中,流动和破裂都是物理量,而任一物理量都有它自身的数学背景。流动的数学背景可视为从一个拓扑空间到另一拓扑空间的映射,而破裂的数学背景则是相应的映射变为奇异的,这是由于破裂时宏观组元破坏,变换模趋于无穷大的缘故。从而,它们是彼此相关的。流变断裂学就是建立存这个数学背景上。我们另一文的结论是,断裂是不受表面能影响的一个纯粹流变过程。可是,把表而能引入断裂过程的连续统力学描述中,才主要地使它从适用于未裂体的力学独立出来。但我们认为,由于这项引入,使得经典连续统力学惯刚的把相应局部平衡方程作为整体平衡描述的直接结论的可能性就丧失掉。它们必须代以作为裂开的附加假设。当把物体的开裂视作为一个非平衡不可逆热力学过程,表面能的整个热力学性质也就清楚了。流变性材料的任何力学过程都要耗散能量。因此,为能正确地描述裂纹扩展,就需要把流变固体从力学上看作是耗能型介质,从而在整体能量平衡规律中必须计及标志流变性材料特性的耗能率。根据扩展裂纹表面的特征,平衡方程是实质率型方程。此外,我们从连续统热力学知道,不可逆过程必然伴有熵产生。在某种情况下,不可逆的裂纹扩展向开裂体提供了熵含量,从而为了正确的看待,应将断裂视作为带有记忆的流变过程。为给流变断裂学以正确的理论基础,对这里提出的不仅涉及热力学第一定律而且涉及第二定律的一些看法,就需要加以解释和数学论证。本文给出流变断裂学的这样理论基础。我们表明,根据热流变性材料响应,只要时间和温度历史间存在一定关系,热流变性记忆材料就可定义为一种粘弹性记忆材料。由于甚至物体的整体状态是一种平面应力状态时,平面应变裂纹增长公式也适用,这仅要求对于是平面应变的裂纹尖端邻域来说,衰坏区足够小。所以,我们应用Graham的广义粘弹对应性原理,从而简化了流变体的断裂问题。

The rheological properties of cis-1,4-polybutadiene rubbers with rare earth catalyst ( LnBR ) and its oil-extended rubber ( LnOBR ) , as well as with nickel catalyst ( NiBR ) were examined by Instron 3211 capillary rheometer. It was found that the raw rubbers of LnBR, LnOBR, NiBR, having the flow indexes of less than 0.4, 0.6, 0.5, respectively, were non-Newtonian pseudo-plastic fluids at 70℃. The apparent viscosity of these raw rubbers decreased with increasing the shearing rate. The non-Newtonian behaviour...

The rheological properties of cis-1,4-polybutadiene rubbers with rare earth catalyst ( LnBR ) and its oil-extended rubber ( LnOBR ) , as well as with nickel catalyst ( NiBR ) were examined by Instron 3211 capillary rheometer. It was found that the raw rubbers of LnBR, LnOBR, NiBR, having the flow indexes of less than 0.4, 0.6, 0.5, respectively, were non-Newtonian pseudo-plastic fluids at 70℃. The apparent viscosity of these raw rubbers decreased with increasing the shearing rate. The non-Newtonian behaviour of the compounds varied with the changes of temperatures and shearing rates, their flow indexes were less than 0.6, 0.4, 0.6, respectively. The Barus effects reached the minimum at lower shearing rate within 120-140℃. The LnBR showed a more pronounced tendency towards melt fracture than NiBR. For smooth extrudates, the critical shearing rate of each rubber above was 35, 40, 100 s-1, respectively, at 120-140℃.

本工作采用Instron 3211毛细管流变仪,对典型稀土顺丁橡胶(LnBR)及其充油胶(LnOBR)样品,以及镍系顺丁橡胶(NiBR)工业产品的流变性能进行了考察和比较。结果表明,LnBR、LnOBR、NiBR生胶在70℃时都是假塑性流体,其流变指数n分别小于0.4、0.6、0.5,且有不同的表观粘度。混炼胶也都是假塑性流体,其非牛顿性的大小,随挤出温度与切变速率而变化。实验条件下,LnBR、LnOBR、NiBR 混炼胶的 n值分别小于 0.6、0.4、0.6。在 120—140℃低切变速率下操作,胶料的弹性记忆效应最小。LnBR熔体破裂比NiBR严重。LnBR、LnOBR、NiBR在 120—140℃下得到光滑挤出物的临界切变速率分别为 35、40、100秒~(-1) 。

The samples having almost the same molecular weight but different MWD were pre-pared by precipitation fractionating and then mixing in solution. The influence of MWDon the viscoelastic properties of raw rubber was studied using the methods of GPC andstress relaxation. The effect of low molecular weight fractions on the density of chainentanglement networks and the contribution of high molecular weight fractions to theviscoelastic properties of raw rubber were also examined.

本文采用沉淀分级和溶液混合的方法制备分子量相近但分子量分布不同的顺-1,4-聚丁二烯样品,通过凝胶渗透色谱(GPC)和应力松弛的方法,研究分子量分布宽度对生胶粘弹性能的影响,并考察低分子量级份对缠结网络密度的作用和高分子量级份对生胶粘弹性能的影响。结果表明,聚合物本体的稳流切变粘度对分子量分布最为敏感。随分子量分布的变宽,低分子量级份增多,缠结网络密度变小,当高分子量级份增加时,生胶的弹性记忆效应加强。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关弹性记忆的内容
在知识搜索中查有关弹性记忆的内容
在数字搜索中查有关弹性记忆的内容
在概念知识元中查有关弹性记忆的内容
在学术趋势中查有关弹性记忆的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社