水力劈裂过程只有弹性变形和脆性破坏,不存在裂隙压裂过程中的第三种变形机理—压缩破坏。
There are only elastic deformation and brittle deformation on the process of hydraulic fracturing, and not compaction.
大理岩岩样在时滞性压缩破坏过程中会产生大量的竖向裂纹,破坏时会产生大量的片状破裂碎屑;
Many vertical cracks occur during test process; and lots of sheet debris are created when the marble failure.
试样压缩破坏时储存的能量随着废胶粉取代量的增加逐渐增大,随着废胶粉粒径的减小逐渐增大。
The breakage energy of mortar mixing with waste rubber powder increases when the amount of waste powder increases, or particle size of waste rubber powder decreases.
对缝纫层合板和无缝纫层合板进行低速冲击后压缩破坏实验,以研究低速冲击后层合板的压缩破坏机理。
Compressive failure tests were carried out on composite laminates and stitched laminates after low velocity impact to study compressive failure mechanisms of laminates after low velocity impact.
采用缝纫工艺对基于预浸料辅层的复合材料进行厚度方向增强,用落球法进行了冲击损伤和冲击后压缩破坏实验。
The stitching process was applied to improve the properties in the throughthickness direction of composites based on prepreg materials.
对两种材料体系和铺层的复合材料层合板进行低速冲击后压缩强度试验,以研究低速冲击后层合板的压缩破坏机理。
The compressive failure tests were carried out on the composite laminates after low velocity impact damage to study compressive failure mechanisms of laminates after low velocity impact damage.
实验结果表明:材料的编织角对其压缩力学性能的影响很大,随编织角的变化,编织复合材料的压缩破坏机制发生了变化。
Experimental results show that the mechanical properties and mechanism of compressive failure of the composites change with the increase of the braided angles.
实验结果表明:材料的编织角对其压缩力学性能的影响很大,随编织角的变化,编织复合材料的压缩破坏机制发生了变化。
The experimental results show that the mechanical properties and compressive failure mechanism of the composites change with the increase of the braided angles.
通过对纸蜂窝结构特性和压缩破坏机理的分析,建立以原纸环压强度为控制的纸蜂窝结构面外载荷理论模型和临界载荷计算方法。
The model and calculating method for determining the out-plane load of paper honeycomb were established based on the ring crush strength of paper.
通过以上两种不同的模拟方法,本论文分别阐述了拉伸破坏实验、压缩破坏实验以及电测法测定材料弹性模量和泊松比的仿真软件设计与开发的方法。
Through the two different methods, this paper discusses how to develop the experimental simulation software: tensile test, compressive test, strain measurement of Young modulus and Poisson ratio.
对铸铁试件的压缩破坏现象做了深入研究,解答了理论破坏面与实验破坏面偏差10度的问题。在对工程力学理论和实验研究方面提供了重要的依据。
The fractured phenomenon of cast iron compression is further investigated. The problem of 10 degree deviation between theoretical fractured surface and practical fractured surface is solved.
为了给荔枝精深加工机械的研发提供设计依据和理论基础,对荔枝的物性参数(球度、果壳厚度和鲜果平均密度等)和机械特性(压缩破坏载荷及变形)进行了测定。
In order to provide design and theoretical basis for intensive processing machinery of Litchi fresh fruit, physical and mechanical property of Litchi fresh fruit were measured.
依据这一模型,分析了单轴压缩时岩石破坏阶段声发射特性与压机刚度的关系。
The relation between AE characteristics during rock failure and machine stiffness is analysed under uniaxial compression with the above model.
提出了单轴压缩的岩样在受到剪切破坏条件下的全部变形特征,即轴向、侧向、环向、体积应变及峰后泊松比的解析式。
Analytical solutions of axial, lateral, circumferential and volumetric strains, and post-peak Poisson's ratio of rock specimen subjected to shear failure in uniaxial compression are proposed.
本文介绍纺织结构复合材料在剪切、压缩、拉伸和弯曲情况下的破坏机理,分析其特点和存在的问题,提出了发展趋向。
This paper describes the failure mechanisms based on shear, compression, tension and flexure, analyzes characteristics and problems of those models and then discusses the future trend.
在单轴压缩变形破坏过程中,具有与普通岩石试件不同的四阶段性特征。
Moreover, the uniaxial compressive deformation and damage of thenardite are different from other rocks during four deformation phases.
又对单轴压缩岩样剪切破坏进行了分析,得到了其失稳判据。
Next, analysis of uniaxial compression tests for rock specimens subject to shear failure is conducted and the criterion of instability is deduced.
三种算法都生效的情况下,一个1 -GB的视频文件可以被压缩到只有25MB,并且不会破坏任何原始视频信息。
With all three algorithms in effect, a 1-gb video file can be compressed to just 25 MB, without destroying any of the original video information.
试验结果表明:在应力峰值前的长时间单轴压缩作用下,硬脆性大理岩的破坏表现出明显的时滞性;
The test results show that: the hard brittle marble obviously performs time-lagged destruction under long time of pre-peak stress uniaxial compression.
压缩技术能有些帮助,但利用这些技术往往会破坏MOLAP的自然索引。
Compression techniques can help, but using them tends to destroy MOLAP's natural indexing.
还测试了股骨、胫骨拉伸和压缩时的破坏强度。
The tension and compression ultimate strengths of femur and tibia were tested, too.
给出两种增强泡沫塑料静、动态压缩实验的一些新结果,研究了它们变形及破坏的规律性。
Some new results of the static and dynamic compressive tests about two reinforced foam plastics are given in this paper.
应用双剪理论对岩石在三轴压缩载荷下的强度和破坏特性进行了理论分析,并将分析结果与已有实验作了对比。
The characteristics of the rock strength and failure under triaxial compressions are theoretically analyzed in detail with the twin shear theory and the results are compared with experimental data.
采用白光数字散斑相关方法作为实验的观察手段,对单轴压缩条件下岩石变形破坏进行实验研究。
The experiments of the deformation and failure of rock under the condition of uniaxial compression were carried out by using the white digital speckle correlation methods.
通过对大理岩的标准岩石试件进行单轴压缩和巴西劈裂试验,探讨了不同加载方式对破坏后岩石碎块分布的影响。
Based on Brazilian Split test and uniaxial compressive test for standard marble samples, the influence of the loading form on the distribution of rock fragments is discussed.
利用RMT-150B岩石力学多功能试验机完成了单轴压缩状态下砂岩、大理岩和花岗岩试件疲劳破坏变形及机理的较为系统的试验研究。
Testing study is made on the fatigue failure and deformation mechanism of sandstone and marble under uniaxial compression condition with rock mechanics test equipment RMT-150B.
通过现场原型动冰力测量实验与冰单轴压缩实验获得了大量的海冰破碎动冰力时程曲线以及结构振动响应时程曲线,研究了冰与结构作用快速挤压脆性破坏形成动冰力机理。
In this paper, many data are presented of dynamic ice forces and corresponding responses of structure recorded by full-scale tests in the Bohai Bay and by uniaxial compression tests in laboratory.
通过现场原型动冰力测量实验与冰单轴压缩实验获得了大量的海冰破碎动冰力时程曲线以及结构振动响应时程曲线,研究了冰与结构作用快速挤压脆性破坏形成动冰力机理。
In this paper, many data are presented of dynamic ice forces and corresponding responses of structure recorded by full-scale tests in the Bohai Bay and by uniaxial compression tests in laboratory.
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