surface propagation 中文意思是什麼
surface propagation
解釋
表面傳播- surface : n 1 表面；地面；水面；廣場，空地。2 外觀，外表，皮毛。3 【幾】面；切口；【航空】翼面。adj 表面的...
- propagation : 持續培養
-
Crack propagation from the flameout edge can be modeled by considering an edge crack in the martensite surface from flame cutting.
裂紋從燒割邊緣的擴展可模擬為一個從燒割處的馬氏體表面起始的邊裂紋。 -
A two - dimensional plain strain finite element model of infinite plate is developed to investigate the ultrasonic wave propagation and scattering on three kinds of cracks : parallel to the surface, 450 oblique angle to the surface, and quarter - circle
摘要建立了無限長板的具有吸收邊界的二維平面應變有限元模型，在研究了脈沖超聲波在無限長板中傳播的基礎上，對板中平行於表面的裂紋、與表面成45的斜裂紋和四分之一圓周弧形裂紋三種情況的脈沖超聲波散射進行了重點研究。 -
Overloaded trucks causes based layer to failure and promote in turn the nucleation, propagation and development of refraction cracks in surface layers
同時超載車輛可能引起基層底面開裂並由此引起面層的反射裂縫。 -
Under the complex loadings, the surface flaws of large complex structures and the original defects of materials would initiate the propagation of micro three - dimensional ( 3d ) cracks, and result in catastrophic accidents. for the limitations of the traditional theories of two - dimensional cracks, the safety of actual structures containing 3d cracks cannot be guaranteed completely without the out - of - plane stress constraint
復雜應力作用下，宏觀復雜結構表面加工質量和材料本身固有缺陷以及外來損傷等會引起三維裂紋的萌生、擴展，最終導致災難性的破壞，而傳統二維裂紋理論在解決實際三維裂紋問題時出現不足，無法完全保障結構安全。 -
The test of low cycle fatigue characteristics for 45crnimova steel and in - situ observation on surface crack propagation
鋼的低周疲勞特性和表面疲勞裂紋的在位觀測 -
It consists of two parts : the first part ( chapter 2, 3, 4, 5 ) studies the characteristic of elastic waves and surface waves in orthotropic fluid - saturated porous media using biot ' s theory which is based on the substitutive model. in the second one ( chapter 6 ), a new three - dimensional meso - calculating model, which is more coincided with the inner action mechanism of porous media, is proposed. based on this model, the elastic wave propagation in fluid - saturated porous media under longitudinal impacting is discussed
論文主要分為兩大部分：第一部分基於替代模型的biot理論，對各向異性介質中平面波以及表面波的傳播特性進行了研究；第二部分從細觀層次出發，提出了一個更加符合含液飽和多孔介質內部作用機理的三維細觀計算模型，並對縱向沖擊載荷作用下液飽和多孔介質中彈性波的傳播規律進行了討論。 -
Analyzing the propagation behaviors for open and close crack, the author gain that normal fault is more dangerous to earthquake than reverse fault and glide fault. 3. appling fracture mechanics to discuss reservoir - induce earthquake mechanism, the author observes the characteristic of surface crack and gains the stress intensity factor induced by the pressure of rock, water and osmosis
針對庫區斷層為表面裂紋這一特點，研究水庫地震的斷裂特點，得出地應力作用下的應力強度因子、庫水作用下的應力強度因子和滲壓作用下的應力強度因子以及它們的應力強度因子之合，並且合理的解釋了構造型水庫地震的誘發機理。 -
Wave propagation characteristics of cylindrical shells with circumferential surface crack
含環向表面裂紋圓柱殼的波傳播特性研究 -
is the plane-wave propagation factor in the uppermost medium and w is the propagation factor of the surface wave.
是最上部介質中的平面波傳播常數，而w是表面波傳因子。 -
The plasmas ejects in a high speed, and gives impulsion loading to the target surface which results in a series of compress wave propagation into target
該等離子體向外高速噴射，從而施於靶面一個壓力極高的沖擊加載，導致一系列向靶內傳播的壓縮波。 -
On the contrary, the degree of saturation plays an important role on p - wave propagation, if incidence is 90 degree. the amplification factor on surface related to the response of bedrock is the biggest if the media is one - phase media, and the factor is the smallest if the media is unsaturated media ( sr > = 90 % )
P波從底邊界垂直入射時，飽和度對地表土層的反應有顯著的影響。就地表土層位移和加速度相對于基巖的放大倍數來說，一般有這樣的規律：單相土的放大倍數最大，欠飽和土的放大倍數最小，飽和土的放大倍數居中。 -
In this dissertation, the numerical computation for the acoustic radiation problem ( arp ) is studied deeply and systematically in the theory, method and the application technique, based on analyzing the situation of the home and abroad on the numerical computation for the acoustic radiation problem. the calculation formulas of the boundary element method ( bem ) for the exterior acoustic radiation problem in the full - space and half - space are deduced, based on the wave propagation theorem ; the arising of the non - unique solutions, which is associated with the application of the boundary integral equation ( bie ) in acoustic radiation problem, is analyzed and proofed ; the improved combined helmholtz integral equation formulation ( ichief ) is presented to overcome the non - uniqueness problem more effectively and reliably ; the determination of the singular integral coefficients on various occasions is analyzed ; the properties and treatments of the singular integrals with different orders axe studied ; the computation program of the cubic spline ichief is developed and its ability to overcome the non - uniqueness problem and feasibility to discrete the surface coarsely with the sufficient calculation precision are examined through examples
第二章在聲波動理論基礎上，詳細地推導出對應于無限域和半無限域的外部振動聲輻射問題的邊界積分方程計算公式；根據fredholm積分理論，對利用邊界積分方程計算振動聲輻射問題過程中解的非唯一性的產生進行了分析和證明；改進了chief法以提高其克服解的非唯一性的有效性和可靠性；對不同條件下奇性系數的計算、強奇性積分的收斂性及其在變量替換時與普通積分的差異性、不同階奇性積分的計算、數值求積分等進行了研究；開發了三次樣條改進chief法計算軟體，並通過算例考核了該方法在特徵波數處克服解的非唯一性的有效性和在保證計算精度的前提下實現剖分粗化以提高計算效率的可行性。 -
Based on the surface runoff and sediment load and changing characteristic of river boundary in different period in the lower yellow river, the regulating mechanism of cross section and riverbed withered and its influence to the flood propagation were researched systematically
基於不同歷史時期黃河下游水沙條件和河道邊界條件變化特點，系統研究了斷面調整機理及河道萎縮及對洪水演進特性的影響。 -
Propagation of nonlinear shallow surface water waves at discontinuous point
非線性淺水波在不連續點的傳播 -
Abstract : the process of thermal fatigue crack propagation on the surface of steel bonded carbide gjw35 under the action of thermal stress has been observed
文摘:觀察了在熱應力作用下gjw35鋼結硬質合金表面熱疲勞裂紋擴展過程。 -
This study adopts active detection technique based on lamb wave to monitor damage in composite materials. pzt ceramics with the diameter of 8mm are bonded on the surface of fiberglass - reinforced composite material acting as both actuators and sensors to generate and collect lamb waves. the waves emitted interact with discontinuities and experience a change in their propagation characteristics when damage is generated
本文採用lamb波主動監測技術，利用粘貼在復合材料板表面的壓電元件，通過選擇恰當的激勵信號，激勵出可進行lamb波分析的主動監測信號，進而對監測信號進行分析及模式處理，初步實現了二維結構的損傷定位。 -
The present dissertation discusses two issues in the laser plasma interaction. in the first part, we introduce the basic concepts about laser plasma interaction and simulation, and give the simulation results concerning the influence on the propagation of the laser pulse in plasma, exerted by the spatial modulation on the surface of the preformed plasma
第一部分簡單介紹了激光等離子體相互作用物理與模擬的一些基本情況和基本概念，並模擬研究了靶表面等離子體的空間調制對激光傳播的影響，分析了等離子體溫度診斷問題及激光等離子體相互作用過程中粒子分佈函數的特徵。 -
Studying the rule of geometric shape of surface crack during propagation by means of fracture mechanics theory, a predicting method of fatigue crack propagation life and it ' s numerical calculation theory are presented
本文應用斷裂力學理論，對焊接鋼結構表面裂紋擴展過程中裂紋幾何形狀的變化規律進行了探討，提出了疲勞裂紋擴展壽命的預測方法，給出了相應的數值計算理論。 -
In order to utilize the atmospheric duct phenomena, and to make the electronic reconnaissance facilities more effective and the status of battlefield more advantageous, on the basis of classification of the atmospheric duct, first the model for evaluating the effective detective zone of electronic reconnaissance facility is established, then the numerical value simulation method of electromagnetic wave propagation under the condition of surface duct calculated with parabolic equation and fourier arithmetic is presented, and finally the influences of atmospheric duct on electronic reconnaissance facility is analyzed
為充分利用大氣波導條件，發揮電子偵察設備效能，使戰場態勢向有利於己方方向轉化，在介紹大氣波導分類的基礎上，建立評估電子偵察設備的有效探測區的模型，給出用拋物線方程及其分佈傅里葉演算法計算電磁波在表面波導條件下傳播的數值模擬方法，並分析了大氣波導對電子偵察設備的影響情況。 -
The general attenuation law of ground vibration caused by heavy tamping is verified by spectrum analysis in this paper. moreover, the relationship between attenuation index and standard penetration number is created through combination analysis of vibration attenuation and surface wave propagation
在此基礎上，通過面波分析，得出了場地介質衰減指數和表徵場地介質性質的參數?標準貫入擊數之間的關系，給出了表達式的一般形式。
分享友人