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直接约束
相关语句
  direct constraint
     Direct constraint procedure for evaluating faults on steep slopes
     评价高边坡断层的直接约束方法
短句来源
     It is mostly developed to analyze a new and stable solution about contact problem—direct constraint procedure.
     重点研究了一种新型的、稳定的接触问题的求解方法—直接约束法。
短句来源
     The direct constraint procedure,a new and steady solution to the contact problem,was applied to analyzed the collector head and the contact,and optimization techniques were developed to analyze the contact of the pantograph-catenary and to evaluate the key parameters of the spring system.
     利用一种新型、稳定的接触问题求解方法———直接约束法,对受电弓和接触网进行接触计算分析,并将工程优化算法融入有限元分析的全过程,实现了弓头弹簧关键参数的优化设计.
短句来源
     A direct constraint procedure was used to model the discontinuous mechanical behavior(such as sliding and disjointing) of faults and weak interlays in steep slopes to evaluate the safety of such slopes.
     为正确评价断层对于岩石高边坡安全稳定性的影响,采用接触力学的求解方法——直接约束法模拟断层的滑移和脱开等不连续行为。
短句来源
     The example are show the direct constraint procedure base on contact mechanics in this paper reflects better the structure contact character, so it can common apply on all kinds of contact problem analysis in the engineering structures.
     算例验证表明了本文基于接触力学的直接约束法所建立的接触模型是一种较好的反映结构接触性质的数学、力学模型,其可普遍应用于工程中各种接触问题的分析。
短句来源
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  direct restriction
     Study on contact characteristics between seal and door based on direct restriction
     基于直接约束法的密封条与车门之间的接触特性研究
短句来源
     Based on the treated engineering against the differential settlement of subgrade at the northern second-loop freeway in Guangzhou,with the help of the MARC program,authors use the contact iterative computing method based on the direct restriction and COULOMB friction model for simulating the nonlinear contact between cutting and filling of part-cut-part-fill subgrade. Numerical simulation is done for the method treated by geocell.
     结合广州北二环高速公路路基不均匀沉降处治工程,应用MARC软件,采用基于直接约束的接触迭代算法和COULOMB摩擦模型模拟半填半挖路基挖方段和填方段的非线性接触,对土工格室处治方法进行了数值仿真;
短句来源
     Therefore,the contact algorithm is established based on direct restriction and the contact characteristics between the seal and the door are studied using numerical method.
     为此,笔者建立了基于直接约束法的接触算法,利用数值方法对密封条与车门之间的接触特性进行了分析研究。
短句来源
  “直接约束”译为未确定词的双语例句
     Six interior steel beam-RC column joints with SPH (Steel Plate Hoop) or
     采用SPH(Steel Plate Hoop)或ATA(Angle Truss Aid)直接约束柱头或节点核心区可以大大改善其强度、延性、滞回及耗能性能。
短句来源
     All thirteen excavation stages of a super deep foundation pit braced by rock-socketed diaphragm wall are simulated in this article using Drucker-Prager soil model and contact algorithm based on direct control method.
     本文用Drucker Prager模型和基于直接约束的接触算法模拟了超深嵌岩地下连续墙支护深基坑开挖全过程。
短句来源
     Direct restraint mechanism including contract constraint mechanism, regulation restraint mechanism and organization restraint mechanism.
     其中直接约束机制包括合同约束机制、章程约束机制和机构约束机制。
短句来源
     Meets down, this article domestic and foreign manager which has has restrained the mechanism take at present the basic pattern (mainly to include direct restraint machine-made and indirect restraint mechanism) as a sample, carries on the effect analysis one by one.
     本文以目前国内外已有的经理约束机制的基本模式(主要包括直接约束机制和间接约束机制)为样本,逐一进行效果分析。
短句来源
     After the act of proxy, the station withdraws from the contract of passenger traffic contracts, leaving the other two sides as the direct participants.
     在代理行为完成以后,汽车客运站退出客运合同关系,客运合同直接约束客车经营者和旅客。
短句来源
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  direct constraint
As is often the case with historic earthquakes, macroseismic data provide the most direct constraint on magnitude.
      
Therefore, agitated patients often have to be hospitalized and their condition requires the use of direct constraint.
      
We have also started an experiment to give direct constraint on the seismic coupling at the subduction zone.
      
  immediate constraint
For this reason, it is not realistic to always apply the typical immediate constraint check for any kind of application.
      
  direct restriction
DNA from Mediterranean and Asian β-thalassemia patients, now residing in Germany, has been characterized by oligonucleotide hybridization and direct restriction analysis.
      
The polymorphic TaqI site of the C8B gene localized in intron 11 could be demonstrated by direct restriction fragment analysis of a PCR fragment containing exons 11 and 12, and the enclosed intron 11.
      


Six interior steel beam-RC column joints with SPH (Steel Plate Hoop) or

采用SPH(Steel Plate Hoop)或ATA(Angle Truss Aid)直接约束柱头或节点核心区可以大大改善其强度、延性、滞回及耗能性能。对六个带有ATA或SPH的框架内节点进行低周反复荷载试验。分析了节点各种抗震性能、破坏形态及传力机理,建立了刚柱头变角腹杆桁架力学模型。提出了极限状态强度理论与实用公式,与试验结果符合很好。

The terrestrial heat flow value provides a direct constraint on the abundance of uranium, thorium and potassium in continental crust and/or lithosphere. It should not excess the average heat flow value in a geotectonic unit that the deduced heat flow calculated by the abundance of U, Th and K derived from the crustal composition model of the same unit. On the basis of over 700 observed heat flow data in the continental area of China, chemical composition models of crust and lithosphere of China and its tectonic...

The terrestrial heat flow value provides a direct constraint on the abundance of uranium, thorium and potassium in continental crust and/or lithosphere. It should not excess the average heat flow value in a geotectonic unit that the deduced heat flow calculated by the abundance of U, Th and K derived from the crustal composition model of the same unit. On the basis of over 700 observed heat flow data in the continental area of China, chemical composition models of crust and lithosphere of China and its tectonic units were tested whether the model is consistent with the constraint of observed heat flow data. The result shows that many models published recently are not consistent with heat flow constraint; such as the models of whole China published by Li Tong and his cooperators, the model of Northern Xinjiang by Ni Shoubin and others, and the model of the northern margin of Yangtze Platform by Gao Shan and others. The abundance of U, Th, and K elements in these models are unreliable, and the contents of other strong incompatible elements in these models are also susceptible. However, the model of North China Platform by Chi Qinghua and Yan Mingcai and models of Central East China, North China Platform and Qinling Orogen by Gao Shan and others are consistent with the regional heat flow constraint.

大地热流值是大陆地壳和岩石圈 U、 Th、 K丰度的直接约束;根据地球化学元素丰度值推算出的大地构造单元的区域地壳热流值,必定不能大于该区域内的平均热流值。根据 700余个实测大地热流数据,对目前发表的中国大陆地壳和岩石圈的化学成分模型进行了检验。结果表明 ,多数模型不能满足大地热流约束,如黎彤等的关于中国大陆及其内部构造单元的地壳和岩石圈成分模型,倪守斌等提出的新疆北部地壳生热率模型,以及高山等提出的扬子地台北缘地壳成分模型。这些模型的 U、 Th、 K丰度值不太可靠,其他强不相容元素的丰度值的可信程度亦值得怀疑。而迟清华、鄢明才提出的华北地台地壳成分模型和高山等建立的中国中东部及华北地台和秦岭造山带的地壳成分模型通过了区域大地热流的检验。

Using a nonlinear and elastic material to pre tighten a multi layer cylindrical structure concerns the effects of the geometrical and material non linearity and also the friction between the contact surfaces. When the hardness of the materials in the structure is very different, the low hardness material presents high deformation and increases the level of the geometrical non linearity. The level and distribution of the pre stresses are influenced by the general and local stiffness of the structure, the...

Using a nonlinear and elastic material to pre tighten a multi layer cylindrical structure concerns the effects of the geometrical and material non linearity and also the friction between the contact surfaces. When the hardness of the materials in the structure is very different, the low hardness material presents high deformation and increases the level of the geometrical non linearity. The level and distribution of the pre stresses are influenced by the general and local stiffness of the structure, the contact area and the press degree. In this paper, a mechanical test and a numerical simulation are carried out on a cylindrical structure of two layer metals pressurized by rubber. Then, this structure is subjected to a concentrative load situated at the center and the behavior of the rubber layer is obtained under the complete stress condition. In the numerical modeling, the direct contact model and the friction model of Coulomb are used. Using two half ring to press the rubber layer and finally fix the structure is the same process in both experiment and numerical simulation. The results of the simulation agree with the experimental data. It seems that the numerical model is valid to simulate the contact pressurized structure with nonlinear and high deformation.

利用非线性弹性材料对多层圆柱结构进行接触预紧 ,涉及到几何非线性和材料非线性以及接触面上摩擦力的影响。当材料间刚度差别较大时 ,刚度低的材料呈现大变形特征 ,加大了几何非线性的程度。结构内部预紧力的大小和分布与结构的整体刚度、结合部位的局部刚度、过盈配合程度、接触面积等因素有关。本文对以橡胶作为预紧垫层的双层金属柱体的预紧过程进行了力学实验和数值模拟。预紧后的模型受中心集中力的作用 ,以得到橡胶垫层在复杂载荷作用下的状况。在数值模拟模型中 ,接触面采用直接约束模型 ,摩擦力的模拟选用库仑摩擦模型 ,预紧力的施加与力学实验模型相同 ,利用两个金属半圆环逐步压紧橡胶材料。数值模拟结果和实验数据吻合较好 ,表明结构非线性大变形接触预紧模拟的数值模型是合理的。

 
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