The main factors affecting the soil-structure interface behaviors were found experimentally and theoretically, including: 1 the thickness of the interface that is five to six times the average grain size of the soil; 2 the aeolotropy of interface, which is responsible for anisotropic response of the stress-strain response of the interface; 3 two physical states, including crashing and compression of the soil near the structure surface, which govern the stress-strain response of the interface strongly; 4 two shear deformation components due to sliding and constraint of the structure surface relative to the soil respectively, which forms the deformation of the interface; 5 the volumetric strain due to dilatancy, which is found to be composed of a reversible dilatancy component and an irreversible dilatancy component. 4. A unified constitutive model of the interface, based on new elasto-plasticity damage theory, was developed. It was confirmed to be effective for the conditions considering monotonic and cyclic shearing, coupling effect of shear and volumetric strains, evolution of physical state, micro-structure aeolotropy of the soil and the resulting aeolotropy of the interface as well as the three normal boundary conditions stated above. 5. 2D and 3D finite element formulations of the present model were derived and incorporated into the FEM codes. They were applied to the evaluation of practical engineering problems with different typical interfaces between soil and structure. The new model was shown to be reasonable and effective.

確定了粗粒土與結(jié)構(gòu)接觸面厚度約為5～6倍的平均粒徑欧美aaaaaaaa片，首次揭示了接觸面的細觀結(jié)構(gòu)異向性以及由此所引起的宏觀剪切異向性，發(fā)現(xiàn)了在單調(diào)和往返剪切荷載作用下土顆粒破碎和剪切壓密兩種物態(tài)變化機制共同支配著接觸面力學(xué)性質(zhì)的變化欧美性爱亚洲色图，通過細觀分析證實了接觸面的變形可分解為一般同時發(fā)生的土與結(jié)構(gòu)交界面上的滑移變形以及結(jié)構(gòu)面位移約束范圍之內(nèi)土體本身的剪切變形兩部分97国产乱伦无码，觀測到接觸面受剪時表現(xiàn)出明顯的相對法向位移，并可分解為可逆性和不可逆性兩個分量最近中文字幕免费大全下载；(4)建立了第一個能夠統(tǒng)一地描述單調(diào)與往返剪切特性、剪應(yīng)變與體應(yīng)變耦合特性91免费视频网、細觀結(jié)構(gòu)和宏觀剪切異向性以及土顆粒破碎等物態(tài)變化特性的土與結(jié)構(gòu)接觸面彈塑性損傷本構(gòu)數(shù)學(xué)模型，并采用多種法向邊界條件復(fù)雜加載路徑的試驗成果驗證了新模型的合理性和有效性老太婆黄色片；(5)提出了新模型的二、三維有限元格式并結(jié)合實際邊值問題進行了應(yīng)用計算分析中国一级黄片免费在线观看，比較了不同接觸面本構(gòu)模型對計算結(jié)果的影響，證實了新模型及其有限元格式不僅能夠合理地描述土與結(jié)構(gòu)接觸面的主要力學(xué)特性色狠狠影视一区二区三区，還能夠較好地反映土體與結(jié)構(gòu)物在接觸面處的滑移、脫開等不連續(xù)現(xiàn)象国产福利在线影院。

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 o

但對于厚度剪切型激勵器而言717秋霞电影网，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(jié)構(gòu)的剪切應(yīng)變能亚洲免费va在线播放，因此高階剪切變形理論可以提供板變形的更為精確的解。

The vertical stiffness decreases with shear deformation increase and the ratio of quantity of vertical deformation producing shear deformation and vertical stress is variable.

結(jié)果是隨著剪切變形的增加操一操a片，隔震橡膠支座的豎向剛度逐漸減小：由剪切變形和豎向壓力產(chǎn)生的豎向沉降量的比例是不斷變化的强奷漂亮的女教师中文字幕,。

A first order shear deformation theory of piezoelectric shell was proposed, which is based on Hamilton's principal, linear piezoelectricity theory and first order shear deformation laminated shell theory.

提出了一種壓電層合板殼的一階剪切變形理論久久亚洲这里都是精品。

In chapter 2, a finite element model for the composite sandwich plates is developed, based on the Zig-Zag deformation assumption and the first order shear deformation theory, and the finite element buckling analysis governing equations for the plates under mechanical, thermal and/or thermal-mechanical mixed loads are deduced respectively. By Von-Karman nonlinear deformation relations and Total Lagrange formulation, an incremental governing equation for postbuckling analysis is established and a corresponding effective computational scheme is presented..

第二章首先建立了基于Zig-Zag截面變形假定和Mindlin一階剪切理論的夾層板有限元分析模型女人插插插视频，分別推導(dǎo)了夾層板機械力、熱載和熱—機械力耦合屈曲分析的有限元列式和相應(yīng)的屈曲前以及屈曲臨界狀態(tài)的平衡方程日韩欧美一区二区视频，基于Von-Karman大撓度理論，采用增量形式的全局lagrangian法推導(dǎo)了復(fù)合材料夾層板增量形式的幾何非線性有限元離散平衡方程欧美片在线观看，給出了一種有效的非線性平衡方程的迭代求解格式。

Transverse shear strain is introduced into the strain vector to take transverse shear deformation into account. To avoid shear lock,the one point Gauss integral method is used to compute the stiffness.

復(fù)合材料旋轉(zhuǎn)殼體是航空婷婷五月一区二区三区、宇航和造船等常采用的結(jié)構(gòu)形式之一，這類結(jié)構(gòu)常常在軸壓和側(cè)壓下工作激情文学,图片区,视频区,偷拍，準確預(yù)測此類結(jié)構(gòu)的屈曲臨界載荷和破壞模式，具有重要的工程意義[1]91亚洲高清无码视频。

The new technique allows First Order Shear Deformation Plate Theory orClassical Plate Theory to be used for modeling built-up wing structures, sandwich wing structures or the wing structures which the volume between upper and lower skin is empty or solid with a'general planform.

根據(jù)翼面的幾何和結(jié)構(gòu)特點，新技術(shù)能夠自主選擇經(jīng)典板理論(Classical Plate Theorywww麻豆视频，簡稱CPT)或第一階剪切變形板理論(First Order Shear Deformation Plate Theory，簡稱FSDPT)一级伦奷视频97人人模，具有模擬空心、實心日韩十八禁大尺度三级片免费在线观看、夾層和組合等形式的翼面結(jié)構(gòu)及三維建模的能力欧美WWWWWWWWWW。

A plastic model was proposed which develops from the combination of boundary surface theory and multi-shear mechanism plastic theory. This model avoids the uncertainty and complication associated with the revision of Mansing's rule when a multi-shear mechanism plastic model is used, and is able to simulate the rotation of principle stress axes during seismic activities and the large shear deformation during liquefaction.

將邊界面理論和多重剪切機構(gòu)塑性理論結(jié)合起來并加以改進建立了多重剪切機構(gòu)邊界面塑性模型性欧美69式XXXX，避免了多重剪切機構(gòu)塑性模型通過修正系統(tǒng)修正曼辛準則時的不確定性、復(fù)雜性；且能模擬地震時主應(yīng)力軸的偏轉(zhuǎn)和液化時剪切大變形456亚洲人成国产电影。

According to the peculiarity and deformation of the systems, the main frame is of bending deformation and the subframe is of shear deformation. With concentrated masses model, the dynamic equation of this system is derived.

根據(jù)控振結(jié)構(gòu)體系的特點和通過對該結(jié)構(gòu)的變形分析：主框架采用彎曲模型，而次框架采用剪切模型的集中質(zhì)量模型色欲性爱欧美性爱，據(jù)此推導(dǎo)了控振結(jié)構(gòu)的運動方程。

A large number of twins was found in bainitic midribs for first time. Twins in midribs as well as retained austenite are deformation twins formed by coordinating uniform shear deformation as bainitic ferrite lath grows, twins in bainitic ferritemainly are those inherited in retained austenite as BF thickens by shear mechanism in broad face.

中脊與殘余奧氏體李晶是貝氏體鐵素體切變共格長大時協(xié)調(diào)均勻切變形成的形變孿晶貝氏體鐵素體板條內(nèi)孿晶主要是其橫向側(cè)面切變增厚時殘余奧氏體的遺傳李晶在线播放va，且孿晶面與界面臺階有對應(yīng)關(guān)系无码又爽又刺激免费视频。