unloading test 中文意思是什麼
unloading test
解釋
卸荷測試-
The following conclusions are gained : ( 1 ) the located shear band prongs the ligament near the top crack tip and the structure may occur shear - mode fracture at the angle of 155 ? to crack when load is 87. 92mpa ; the mode of fracture of the flange joint structure is not possible to be void - mode ; ( 2 ) it is proved that loading and then unloading repeatedly can not increase the possibility of invalidation of the structure when the times of loading and unloading are not too more when load is operating pressure ; the structure is safe when the vessel is operating ; ( 3 ) in the fe model of the thesis, not considering the influence of water pressure test which is in the process of fabrication of vessel in fe results in larger deviation in analysi
得出了以下結論：在8792mpa的載荷下筒體一封頭連接結構處的集中剪切帶貫穿韌帶，可能發生沿與原裂紋線成155 「角方向剪切型斷裂；筒體一封頭連接結構不可能發生韌窩型斷裂； （ 2 ）在工作壓力下進行次數不多的反復加、卸載，結構不會破壞，也不會喪失安定性：結構在工作狀態下是安全的； m在本文的彈塑性有限元模擬計算中，對于裂紋尖端進行力學分析時，不考慮壓力容器製造過程中水壓試驗的影響，將導致計算結果出現較大的偏差； （ 4 ）筒體完全屈服時的載荷為92石3mpa ，封頭完全屈服時載荷為86 -
On the basis of existing studies in the field of seepage of rock mass both at home and abroad, the present dissertation has conducted a broad study in terms of hydraulic and geometric parameters, computing model, basic seepage law, fracture drainage, rockmass " unloading mechanics and its relations with seepage. the paper is written by employing such methods as field observation, model test, theory research and numerical analysis. the main research payoffs are as follows
本文在充分認識了國內外巖體滲流研究的發展及研究現狀的基礎上，結合現場觀測、模型試驗、理論研究及數值分析等多種方法，對裂隙巖體的水力幾何參數、計算模型、基本滲流規律、裂隙排水、巖體卸荷力學及其與滲流的相互作用等多方面進行了研究，取得了如下一些主要成果。 -
Test results show that : ( 1 ) the amount of creep deformation during monotonic primary loading depends on strain rate before creep, creep stress level, and creep time ; ( 2 ) during monotonic primary loading, the stiffness increasing magnificently shortly after creep ; ( 3 ) the direction of creep will change from positive creep ; to neutral creep and negative creep during unloading, while during reloading, it will change from negative, to neutral and positive creep
試驗結果表明： （ 1 ）在初始加載過程中，經過一定時間蠕變后黏土的強度有很大的提高； （ 2 ）在卸載過程中，隨應力值下降黏土的蠕變表現出由正蠕變、中性蠕變到負蠕變的逐漸轉化； （ 3 ）在重復加載過程中，隨應力值增加黏土的蠕變表現出由負蠕變、中性蠕變到正蠕變的逐漸轉化。 -
Based on the test system of unloading valve, the step response method is used to acquire the step response curve of this system
以卸荷閥性能測試系統作為研究對象，利用階躍響應法獲得系統的階躍響應曲線並求得了系統的傳遞函數。 -
Furthermore, simulations computer test based on test data has been carried out in the two procedures of cargo loading and unloading and has shown very encouraging results
還分別對系統在洗艙，裝卸兩種狀態下進行了基於實驗數據的計算機控制模擬，並取得良好的效果。 -
The conclusions have been deduced from the detailed analysis of a set of experimental results as below : 1 ) the formula of tangent young ' s modulus et has been established during the unloading process ; 2 ) the shearing features of the samples are similar to undrained test even though there are draining paths so the possion ratio of the sample is about 0. 5 ; 3 ) unloading paths have little effects on the shearing strength parameters
通過對試驗結果的分析得到： 1 ）任一時刻土體的切線彈性模量公式； 2 ）卸載情況下盡管存在排水通道，但試樣仍基本上表現為不排水的性狀，按廣義虎克定律得到的泊松比在0 . 5附近； 3 ）卸荷應力路徑對土體的強度參數影響不大。 -
In this thesis, the unloading region of a typical cross section of shiplock slope of tcp is given, that is 15570 according toin - situ test and geological survey. considering the effects of excavation unloading, numerical analysis for shiplock slope is made by fem and flag. using the theory and software described in this thesis, the excavation analog and the stability analysis of the typical cross section of the three gorges shiplock high slope has been carried out
本文選取三峽工程永久船閘邊坡的典型剖面15570剖面，根據現場試驗和地質調查確定的卸荷范圍，考慮卸荷帶巖體力學參數隨開挖過程而變化，採用二維彈塑性有限元法、二維彈塑性顯式有限差分法進行了邊坡施工開挖數值模擬。 -
The identification method is studied and the transfer function of the automobile air brake unloading valve ' s test system is acquired ; the pressure balance time of the test system of the unloading valve is studied by the increasing pressure in different speed and scope
本文主要研究內容是汽車氣制動卸荷閥性能測試系統的傳遞函數的辨識方法及不同的加壓方式對系統壓力平衡時間的影響並進行了相應的試驗驗證。 -
The strength and deformation parameters of the unloading test have been compared with those of the general triaxial experiments
然後將以上參數與常規試驗的結果進行了對比。 -
To analyze the loess characters of compression, collapsibility and expansion after unloading, water content and the compaction degree of the loess is changed in the test which indicates that the loess with high compaction degree and low water content still has collapsibility
分析了不同含水量、擊實度下黃土的壓縮性、濕陷性和卸荷膨脹性，試驗表明在高擊實度、小含水量下重塑黃土仍然有濕陷性。 -
Damage develops fast after that period. and a nonlinear formula with parameter of unloading modulus and residual strain was brought out to describe damage development in tensile test. it is also found that mechanical properties of c fiber are much less than those of t300 fiber bundles
另外，通過進一步的分析發現三維編織c sic復合材料中纖維束的就位性能遠遠低於其摘要原位性能，這正是c / sic復合材料的拉伸性能遠低於t300 / qy9512復合材料的主要原因。
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