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shearing strain 【物理學】切應變。

shearing strength

Research results show that foundation pit slope soil structure destroy characteristic is subgrade shear strain destroy , namely , it is gradually destroy . lateral displacement of retaining and protecting piles has relations with embed depth , load grade and strength index parameter . soil displacement and timbering pile displacement are in harmony with deformation 研究結果表明,基坑邊坡土體具有地基整體剪切變形破壞的特點,系漸進破壞的過程;支護樁側向變形是樁嵌固深度、荷載大小、土體強度參數變量的函數;土體的位移和支護樁的位移滿足變形協調條件。

The framework and results of this study is thus summarized as follows : 1 . analyzing the effect of the nonlinear parameters on seismic response . so far the g / g _ max - ( transient dynamical shear modulus over the maximum shear modulus vs . shear strain ) and the - ( equivalent shear hysteretic damping ration vs . shear strain ) curves are widely employed in the experimental method in studying soil dynamic property , supposing under equiamplitude cyclic load 目前,人們利用實驗手段分析土體動力特性時給出的最基本的描述量是g g _ ( max ) ?曲線(等效動剪切模量與最大動剪切模量的比值隨應變幅值變化的曲線)及?曲線(等效剪切滯回阻尼比值隨應變幅值變化的曲線) 。

Saturated sand are testes in the laboratory under the undrained cyclic loading condition with static - dynamic dual purpose triaxial compression test apparatus , which is designed under the cooperation of hohai university and marui co . ltd japan . the results indicate that the stress path approaches from a initial stress point to the failure lines as cyclic loading goes on , and eventually converges on a certain limiting stress path in the vicinity of the failure lines . the stress - strain curve , however , does not converge on a closed hystersis loop ; the shear strain rapidly increases in looser sand or gradually and continually increases in denser sand 利用河海大學與日本圓井株式會社共同研制的新型的多功能靜動三軸儀進行了飽和砂土循環扭剪不排水試驗,研究表明,對于松砂,剪應變幅度快速地由微小增加到百分之幾甚至百分之十幾,對于緊砂,剪應變幅度逐漸地由微小增加到百分之幾甚至百分之十幾;經試驗初步研究表明用初始有效平均正應力歸一化的有效應力路徑很好的一致性。

Taking the results as boundary constraint and the velocity field of horizontal movement after transforming reference frame as the load of fem node , the velocity field of horizontal movement in the region is simulated , the principal strain rate field and maximal shear strain rate field are calculated , the variety characteristics of the two rate fields and relation between the variety characteristics and strong earthquake preparation are analyzed 將反演結果作為邊界約束并將變換參考框架后的水平速度場作為有限元節點載荷,模擬區域內部水平運動場并計算其主應變率場、最大剪應變率場,以分析這兩個時段中這兩種場的變化特征及其與地震孕育之間的關系。

Based on the method of directly assuming rational shear strain and deflection fields , a new generalized conforming triangular , 9 dof thick - thin plate bending element , named tsl - t9 , is successfully constructed using semiloof constrains . its stress solutions are improved by the hybrid post - processing procedure . this element is robust and free of shear locking , and possesses excellent performance for both thin and thick plates 5 .根據一階剪切變形理論,將gmst18單元發展成為新型三角形復合材料層合殼單元,并利用應力雜交化后處理方法對單元應力進行計算,使單元方便地獲得了非常滿意的應力分布,特別是橫向剪應力分布的解答。

A certain thickness of sand cushion of a certain size or gradation is paved between the foundation and ground in this new method . when earthquake happens the sand cushion will have plastic shearing strain , reducing the input of high frequency volume , thus consume the earthquake energy form substrate . it is showed in shaking table experiments that there is relevant slippage between foundation and sand cushion , which can prevent the seismic energy from being passed to the above structure and thus reduced the seismic role for the above structure 在建筑物的基礎與地基之間鋪設一定厚度、某種單一粒徑或級配砂墊層,在地震作用時砂墊層發生的塑性剪切變形,減少地震波高頻分量的輸入,從而消耗了下層傳來的地震能量;振動臺試驗表明,當振動發生時,基礎與砂墊層之間有明顯的滑移產生,這就對地震能量向上部結構的傳遞起到了隔斷作用,因而對上部結構起到了減震作用。

This variation of stresses is due to the action of in - plane shear strain in the plate , which is termed “ shear - lag ” . stresses larger than the elementary bending uniform stress thus develop at the web - flange connection . an appropriate reduced “ effective width ” of the plate - with the uniform stress equal to the maximum longitudinal stress - has been widely used by engineers in conjunction with the elementary beam bending theory 但實際上翼緣中剪切變形是不均勻的,由此導致正應力沿橋寬呈曲線分布,從而引出了有效寬度的概念,即按初等梁理論的公式也能得與真實應力峰值接近相等的那個翼緣折算寬度。

Pas , which is varied in alternating models to discuss the effect of visvosity on deformation because it is hard to estimate the true value of the crust . some results acquired by computer calculation show that the rigid garnet porphyroclasts can rotate as the matrix flows , and the rotational degree depends on the shear stress , shear strain , ratio of porphroclasts to matrix and the locations of porphyroclasts in the zone 這樣的變形量級已經十分接近野外實際情況。由于目前地殼物質的粘度值基本上是通過間接推測得到的,其可信度較低,因此文中還討論了基質的粘度變化對變形和應力的影響,分別取了7個不同量級的粘度值10

Yet for thickness shear actuators , due to the shear deformation dominates the plate deflection for shear actuation mechanism , the higher order shear theory can provide more accurate evaluation of the shear strain energy of the plate than the first - order one , higher order shear deformation theory can provide more accurate evaluation of the deformation of the plate 但對于厚度剪切型激勵器而言,由于激勵器主要是引起板的剪切變形,而高階剪切變形理論比一階剪切變形理論能更好地反映結構的剪切應變能,因此高階剪切變形理論可以提供板變形的更為精確的解。

Through studying the working mechanism of the composing , the paper referred the bearing ' s analyzing model and designing flow . through shearing test of high damping rubber , the paper analyzes the influence of shearing shape , shearing strain range and inspiriting frequence on the characteristic parameters ( dynamic shear elastic module , dissipation engineering module , wasted gene ) . according to the rule of equivalent energy , the paper gets the hysteretic curve of hdr ' s equivalent bilinear model and parameters ' calculating formula 本論文通過對這種分離式減震支座各組成部分工作機理的研究,提出了該分離式減震支座整體的計算分析方法和設計流程;通過高阻尼橡膠剪切試驗,分析了高阻尼橡膠剪切面形狀、剪應變幅值、激勵頻率和試件高度對特征參數(動態剪切彈性模量、耗能模量、損耗因子)的影響。

The main contributions of the dissertation are as follows : on the basis of experimental results , the operational effects , such as the magnitude of magnetic field , the temperature and the rate of shear strain , on the shear stress of the mr fluid are shown and models of the quasi - bingham model and a nonlinear model for the shear stress of the mr fluid also are developed , in which the characteristic of “ shear - thin “ of the mr fluid is described 論文的主要貢獻如下:通過測試磁流變液剪切應力與磁感強度、剪切應變速率、溫度的變化規律,建立了能反映磁流變液剪切變稀現象的剪切應力與剪切應變速率的磁流變液模型。根據磁流變液模型,從理論上建立了能在較寬的電壓內范圍比較準確地預報磁流變阻尼器輸出力的近似公式。

Based on the generalized variational principle of the modificatory variables and substituent shearing strain field interpolation of the bending theory of the mindilin plate , this paper brings up the nine - node mixed plate bending element and adopts the sap2000 ? a large - scale finite element analysis programs . by the examples , we find the precision of the method is satisfying 在對轉換層厚板進行局部有限元分析時,本文提出了基于mindlin中厚板彎曲理論的修正的二類變量廣義變分原理和替代剪應變場插值方法的九節點厚薄板通用的板彎曲單元,并采用了sap2000有限元程序。

Fiber - reinforced plastic composites - determination of the in - plane shear stress shear strain response , including the in - plane shear modulus and strength , by the plus and minus 45 degree sign tension test method 纖維增強塑料復合材料.用正負45度sign拉伸試驗法測定包括平面剪切模數和強度的平面剪切應力剪切變形特性曲線

The finite element equation for linear and nonlinear panel flutter analysis using the triangular three nodal mindlin element ( min3 ) which considers the first order shear strain in the plate is formulated ( 3 )使用三結點三角形mindlin板單元( min3單元)推導了壁板熱顫振的有限元方程。

Fibre - reinforced plastic composites . determination of the in - plane shear stress shear strain response , including the in - plane shear modulus and strength , by the plus over minus 45 degrees tension test method 纖維增強塑料復合物.通過施加最小45度拉力測定水平剪切應力剪切拉力反應

Fibre - reinforced plastic composites - determination of the in - plane shear stress shear strain response , including the in - plane shear modulus and strength by the 45 tension test method 纖維增強塑料復合材料.用45張力試驗法測定平面剪切應力剪切應變反應,包括平面剪切量和剪切強度

3 . on the present deformation condition , the cementite in pearlitic steel has more severe plastic deformation capability t - he max shear strain up to 1 . 9 . 4 C方式ecap變形條件使珠光體鋼65mn中的滲碳體可以表現出很強的塑性變形能力? ?觀察到的最大切變形達到1 . 9的等效真應變。

Aerospace series - non - metallic materials - structural adhesives - test method - part 6 : determination of shear stress and shear strain ; german and english version en 2243 - 6 : 2005 航空航天系列.非金屬材料.結構膠粘劑.試驗方法.第6部

Pure shear strain 純剪應變