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pure compression
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  纯压缩
     Based on the basic concept and calculating theory suggested newly, the deformation calculating theory related to pure compression state and shear compression state of isolating bearing is established.
     基于纯压缩原点竖向刚度和偏压原点刚度理论,提出了预测橡胶座压缩变形量的计算理论。
短句来源
     The injected water in the treated area can be divided into three different effects: the pure compression, the compression and micro flow, the macro flow.
     注入水在调剖剂处理区域内的流动可以分为三种状态:纯压缩、压缩和微观流动、宏观流动。
短句来源
  纯压
     Finite strip analysis of the performance of flat-hat stiffeners as longitudinal intermediate stiffener under pure compression
     帽形中间加劲肋纯压作用下加劲性能的有限条分析
短句来源
     Buckling of Thin-Walled Members under Pure Compression and Pure Bending with Shear Effect
     纯压或纯弯薄壁杆件的稳定分析
短句来源
     For the followingfive in-plane loading cases: pure compression, pure shear, pure bending, shearand compression, shear and bending, the relationship between ultimate strengthand the following parameters are studied with the said method: slenderness ofplate, its geometric imperfection, its residual stresses, its boundary conditions.
     对于面内荷载是下列五种情况:纯压、纯剪、纯弯、剪和压、剪和弯,经用此法研究了极限承载力和下列参数间的关系:板的宽厚比,板的初始几何缺陷,板的残余应力,边界条件。
短句来源
  单纯压缩
     Finally,conclusions are generalized that the vertical rigidity of pure compression is not enough to completely reflect the vertical compression properties of the bearings when the properties of the bearings are evaluated in an all-round way.
     得出在全面评价橡胶隔震支座特性时,单纯压缩竖向刚度不足以全面反映橡胶隔震支座的竖向压缩性能的结论。
短句来源
  “pure compression”译为未确定词的双语例句
     Nondestructive tests were performed in pure compression, flexion, extension, lateral bending, and rotation.
     测定纵向压缩、屈曲、侧方弯曲、伸展及双向旋转刚度。
短句来源
     Results: Group 1 had a significantly higher stiffness than group 2 in pure compression, left bending, and rotation (P<0.05).
     结果:单枚融合器组的纵向压缩刚度、左侧(融合器植入侧)弯曲刚度、顺与逆时针旋转刚度均较双枚融合器组显著增大(P<0.05)。
短句来源
     Based on the displacement variational principle, a general semi-discrete method is developed for buclding analysis of thin-walled members with arbitrary cross section under pure compression and pure bending.
     本文提出了一种基于势能原理的薄壁杆件稳定分析的半离散方法。
短句来源
     Result:The stiffness of PLIF with a single cage had a significantly higher than PLIF with two cages in pure compression,left bending,and rotation(P<005).
     结果 :生物力学研究显示实验组的垂直压缩刚度、左侧 (融合器植入侧 )弯曲刚度、双侧扭转刚度均较双枚融合器组增大 (P <0 0 5 )。
短句来源
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  pure compression
Here the strategy is adopted of equating to zero only the horizontal force resultants on the free surfaces so that the pure compression approximation of Klingbeil and Shield emerges in the event of zero shear.
      
However, unlike the pure compression solution, horizontal and vertical force resultants on the free surfaces cannot both be set to zero, which is a well known characteristic of simple shearing.
      
The results obtained generalise that of Klingbeil and Shield for the case of pure compression alone, as well as incorporating the well known simple shear result.
      
Strain gradients varying from pure compression to pure bending are facilitated.
      
These are analyzed using other thermal and mechanical properties of the test material to obtain the bulk modulus, Poisson's ratio in pure compression, and the relation between the adiabatic and isothermal bulk moduli for polymers.
      
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The paper presents a parameter optimization procedure for the DynamicRelaxation Method, thus reducing the computer time to 1/8-1/10 of whatrequired if the finite element or the finite difference method are used forsolving same problem. This method can be used to calculate the ultimatestrength of plates under out-of-plane or in-plane loading. For the followingfive in-plane loading cases: pure compression, pure shear, pure bending, shearand compression, shear and bending, the relationship...

The paper presents a parameter optimization procedure for the DynamicRelaxation Method, thus reducing the computer time to 1/8-1/10 of whatrequired if the finite element or the finite difference method are used forsolving same problem. This method can be used to calculate the ultimatestrength of plates under out-of-plane or in-plane loading. For the followingfive in-plane loading cases: pure compression, pure shear, pure bending, shearand compression, shear and bending, the relationship between ultimate strengthand the following parameters are studied with the said method: slenderness ofplate, its geometric imperfection, its residual stresses, its boundary conditions.Comparing the calculated results with British data (theoretical and experimental)and Rules of BS 5400 (Bridge code), we find the former agreeing with the lattersatisfactorily.

本文对动态松弛法提出一优化参数自动选择程序,使解题所用机时只是有限元法或有限差分法的1/8至1/10。这法可用以推算板在面外荷载或面内荷载作用下的极限承载力。对于面内荷载是下列五种情况:纯压、纯剪、纯弯、剪和压、剪和弯,经用此法研究了极限承载力和下列参数间的关系:板的宽厚比,板的初始几何缺陷,板的残余应力,边界条件。以所推算的结果和英国的成果(理论值及试验值)及英国桥梁规范BS5400的规则相比,它们符合得使人满意。

Dynamic performance tests have been carried out on sixteen laminated rubber mounts. The horizontal stiffness and damping characteristics under serious earthquake4 the influences of the horizontal shearing deformations, the vertical loads, and the frequencies and cycle index of horizontal loading on the dynamic performance of the rubber mount; the load-carring capacity under pure compression, the limiting horizontal displacement as well as the maximum vertical load under serious earthquake are obtained....

Dynamic performance tests have been carried out on sixteen laminated rubber mounts. The horizontal stiffness and damping characteristics under serious earthquake4 the influences of the horizontal shearing deformations, the vertical loads, and the frequencies and cycle index of horizontal loading on the dynamic performance of the rubber mount; the load-carring capacity under pure compression, the limiting horizontal displacement as well as the maximum vertical load under serious earthquake are obtained. It can be seen from test results that the stiffness and the damping of the laminated rubber mount are obviously reduced with the increase of shearing deformation, and attention should be paid to the situation if the mount is to be designed to stand against either a strong or a weak earthquake. However, for a strong earthquake, the influence of frequencies and cycle index of the loading on the performance of the mounts can be neglected.

通过对16个叠层橡胶隔震支座的动力试验,研究了这类隔震支座的基本性能,包括:大震时设计压力下的水平刚度和阻尼特性;水平剪切变形、水平荷载频率、水平荷载循环次数、竖向荷载变化对隔震支座水平刚度和阻尼特性的影响;纯压承载力;极限水平位移;大震时的极限竖向荷载.

Objective: To compare the intervertebral segmental stiffness between PLIF with one long posterolateral cage, PLIF with one posterolateral cage and facet joint fixation, and PLIF with 2 posterior cages. Methods: Twelve bovine lumbar functional spinal units were divided into 2 groups. group 1 had a long single threaded cage inserted posterolaterally on the left side by posterior approach with left unilateral facetectomy; group 2 had 2 regular length cages inserted posteriorly. Nondestructive tests were performed...

Objective: To compare the intervertebral segmental stiffness between PLIF with one long posterolateral cage, PLIF with one posterolateral cage and facet joint fixation, and PLIF with 2 posterior cages. Methods: Twelve bovine lumbar functional spinal units were divided into 2 groups. group 1 had a long single threaded cage inserted posterolaterally on the left side by posterior approach with left unilateral facetectomy; group 2 had 2 regular length cages inserted posteriorly. Nondestructive tests were performed in pure compression, flexion, extension, lateral bending, and rotation. Test order was intact, implanted 2 sizes, and group 1 with internal fixation of facet joint screw. Results: Group 1 had a significantly higher stiffness than group 2 in pure compression, left bending, and rotation (P<0.05). group 2 had higher stiffness values than group 1 in right bending. Increase of cage size of group 1 increased the stiffness of pure compression, extension, flexion, and decreased the stiffness of right bending and contercolockwise rotation. Cage size had no significant effect on group 2. Group 1 with fixation of facet joint screw had a significant increase in stiffness for extension, bilaleral bending, and colockwise rotation. Conclusion: Posterior lumbar interbody fusion with insertion of a single long threaded cage posterolaterally with unilateral facetectomy enables sufficient decompression while maintaining a majority of the posterior elements. Combined with a facet joint screw, adequate postoperative stability can be achieved.

目的:设计一种经侧后方斜向置入单枚多孔螺纹状融合器的椎间融合新技术,并对其进行生物力学评价。方法:小牛的脊柱标本12件,分为2组(n=6),第一组经侧后方斜向置入加长的单枚椎间融合器;第二组经后路置入双枚椎间融合器。测定纵向压缩、屈曲、侧方弯曲、伸展及双向旋转刚度。第一次测试各组置入融合器后之刚度值,第二次测试各组增大融合器规格后之刚度值,第三次测试第一组附加小关节突螺钉内固定后之刚度值。结果:单枚融合器组的纵向压缩刚度、左侧(融合器植入侧)弯曲刚度、顺与逆时针旋转刚度均较双枚融合器组显著增大(P<0.05)。第一组试件,辅加小关节突螺丝钉固定后,伸展、双侧弯曲和顺时针旋转刚度有明显增加。单枚融合器组的右侧弯曲刚度较双枚融合器组下降。单枚融合器组,增大融合器规格可提高压缩刚度、伸展刚度、屈曲刚度,但右侧弯曲刚度及逆时针刚度下降。双枚融合器组增大融合器规格,刚度并无明显增大。结论:经侧后方斜向植入的单枚椎间融合器加上小关节突螺丝钉内固定融合术,在提供充分椎管减压的同时,具有损伤小、脊柱后部稳定性好、术中对马尾及神经根牵拉轻的优点,可以比较理想地取代后路双枚融合器椎间融合术。

 
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