無應力的 的英文怎麼說
中文拼音 [wúyīnglìde]
無應力的
英文
stre free-
This setup, known as a conoscope, is shown in figure 14. 2 and consists of two stress - free plane - convex lenses a and b and a diaphragm c having a small aperture
此裝置稱為錐光鏡,如圖14 2所示,它由a和b兩個無應力平凸透鏡和一個帶小孔的光闌c組成。These are known as the nine components of stress and are illustrated with reference to an infinitesimal rectangular element about a point in figure 1. 2.
它們被稱為應力的九個分量,均示于圖12中一點附近的無限小的平行六面體單元上。We begin by considering a spherical element in an unstressed body.
現在從考察一無應力物體中的圓球形單元體開始討論。This setup, known as a conoscope, is shown in figure 14. 2 and consists of two stress-free plane-convex lenses a and b and a diaphragm c having a small aperture.
此裝置稱為錐光鏡,如圖142所示,它由A和B兩個無應力平凸透鏡和一個帶小孔的光闌C組成。On the basis of the theory of thin shells and the non - moment assumption, the equations of the motion of the conical shells under lateral cosinoidal loading are derived in the case of ignoring shearing stress
基於薄殼理論和無矩假定,在略去剪切應力的情況下推導了圓錐殼在側向餘弦載荷作用下的運動方程,並採用半解析差分方法進行了數值求解。The layered combined finite element model is taken in the finite analysis of concrete and bonding bar. in the nonlinear analysis ofunbonded prestressed concrete, the effect that unbonded tendons acts on concrete is replaced by equivalent force in the method of equivalent prestress
在有限元分析中,混凝土和粘結鋼筋採用分層組合式的有限元模型,在無粘結預應力混凝土的非線性分析中,將無粘結預應力筋對混凝土的作用,借鑒預應力的荷載平衡法,用其等效力來代替預應力作用。Based on nonlinear finite element theory, stress and deformation behaviors are analyzed after ground stabilization and foundation pit reinforcement with deep mixing method. by comparison of the conditions of treatment and non - treatment of two examples respectively, the results indicate that the match ratio scheme used for deep mixing method is more ideal when soft clay is stabilized in this area of fuzhou in the thesis. this scheme not only can fully utilize industrial waste material, but also can economize construction cost
對于加固土的工程特性,本文以非線性有限元理論為基礎,模擬分析水泥攪拌樁加固地基和基坑支護加固的應力和變形情況;通過兩個例子分別在有處理和無處理情況下的對比,利用固化劑最佳摻入比來設計地基處理方案,並運用非線性有限元方法計算出土體內大小主應力的分佈情況以及變形情況,結果表明本文所得出的配合比方案用於深層攪拌樁法來對福州地區軟粘土進行地基加固時還是比較理想的,這樣不僅充分利用工業廢料,還可節約工程造價。These are known as the nine components of stress and are illustrated with reference to an infinitesimal rectangular element about a point in figure 1. 2
它們被稱為應力的九個分量,均示于圖1 2中一點附近的無限小的平行六面體單元上。Through the calculating example results and the comparisons with other calculating theories, it is proved that the calculating formulas of the combined geometry curve theory is valid, practical and accurate. it can be used in the calculation of line shape at the preliminary design, and can meet the engineering need. ( 3 ) this thesis researches systemically on the calculating theory of the suspension bridge ’ s cable system, including calculating design line shape and internal force, erection line shape of cable and pre - displacement of saddle without loads, the fixed position for erecting cable and amendatory method of cable ’ s unstressed length
通過算例驗證了混合線形理論公式的實用性和正確性,並且與其它計算理論的結果比較,證明公式有足夠的精度,可用做初步設計中主纜線形的計算,能夠滿足工程的需要; ( 3 )對自錨式懸索橋主纜系統計算理論進行了系統研究,包括成橋線形和內力計算、空纜線形和內力計算、鞍座預偏量計算、索夾安裝位置計算和索鞍處主纜無應力長度修正方法。Secondly, calculation theory of construction for suspension bridge is presented under the ideal condition of dead load design. linetype change stiffness of cable and slip stiffness of supporting points are deduced based on segmental catenary theory. then numerical analysis method through sgkz2000 software are introduced in detail about calculating design linetype for suspension bridge, unstressed length of cable, erection linetype of cable and pre - displacement of saddle without loads, erection linetype of wire strands, the fixed position for erecting cable band and linetype of lifting stiffening girders
其次,根據懸索橋恆載設計理想狀態建立了懸索橋施工計算原理;以分段懸鏈線索理論為基礎,推導了懸索的線形變化剛度和懸索支點的滑移剛度;介紹了懸索橋成橋設計線形計算、吊索無應力長度計算、空纜線形與預偏量計算、絲股架設線形計算、索夾安裝位置計算和加勁梁吊裝線形計算的具體方法、數值演算法及軟體sgkz2000的計算模塊的實現。This paper also presents the methods of controlling unstressed length of cable, pre - displacement of saddle, anchor span tension, erection of wire strands, the fixed position for erecting cable band and cable length. determination and control approach of displacement of saddles during cable erection are also introduced. at the same time, the change course of linetype during construction period for suspension bridge is analyzed
再次,介紹了懸索橋的施工控制內容與方法,利用軟體sgkz2000對多座懸索橋進行了施工計算,提出本文關于懸索橋的主纜無應力長度控制、索鞍預偏量控制、錨跨張力控制、絲股架設控制、索夾安裝位置與吊索長度控制的方法;介紹了吊梁階段鞍座頂推量的確定與控制方法,分析了施工階段懸索橋的線形變化過程。In the simulation and analysis on culvert construction, the method of foundation - pit excavation layer by layer and step by step was used, i. e. the method that makes the surface of excavation have no stress, when the elements were excavated gradually in period of construction. at this process, the state of soil is unloading, the laws of stress field and displacement field with the depth of excavation were studied. based on the obtained stress field and displacement field after the excavation was completed, by using of the newly increased filling - elements " gravity and the grinding force, the simulation of the construction of body of the culvert and foundation - pit ' s filling layer by layer had also been done in this dissertation
用有限元法模擬分析涵洞基坑開挖時,採用分層、分步模擬開挖過程的方法,即將計算域內單元分層「挖去」 ,使開挖表面成為無應力表面的方法,分析土體在卸載狀態時的應力場和位移場隨開挖深度的變化規律;在洞體施工后,回填土體時,據開挖完成時的應力場、位移場,通過逐級增加計算域內的單元數目,施加每級新增加單元的自重荷載,利用有限元法模擬基坑及上覆土體分層填築的施工過程,這不僅反映土體處于再加載應力狀態時,填土受力及變形的一般規律,而且這種將地基? ?涵洞? ?土體作為一個統一整體進行模擬的方法,量化了三者之間的相互作用關系。This article describes a way of special ultrasonic system which monitors thermal stress in seamless welded rails. this monitoring system is a non destructive testing system, which adopts avr mcu and high - precise time chip processing as the core of it, and adopts the critically refracted longitudinal wave as the object of measuring. my studying focuses on the theory of the monitoring system, which will be listed in this arctile : according to the snell theory, the theory of motivating of critically refracted longitudinal wave is described in details, and the finite element software is used to emulate the propagating course. the formulas of calculating the pts of swr are taken from the acoustoelasticity theory, and the calculating the parameters is introduced. according to assemble materials, three kinds of ways of monitoring the pts of swr using critically refracted longitudinal wave are described, which are measuring the sound - time in changeless distance, ultrasonic critical - angle refractomery and frequency spectrum, the first way of ways is used in this experiment system. the factors, which effect the monitoring system, are assaid in some degree based
本文的研究工作重點在無縫焊接鋼軌溫度應力測量系統的理論模塊,包括根據snell原理,研究極限折射縱波的激發機理,並使用有限元軟體ansys進行模擬;根據聲彈性理論以及公式推導出計算無縫焊接鋼軌中的溫度應力的公式,並對其中參數的求解方法進行介紹;根據收集的資料,介紹了三種使用極限折射縱波測量無縫焊接鋼軌溫度應力的方法,即固定距離測量聲時法、臨界角折射法和頻譜分析法,本實驗系統使用的是第一種;根據實驗經驗以及相關資料,分析了影響極限折射縱波測量溫度應力的幾個因素,並提出了相應的解決方法;根據實驗系統的需要,獨立設計並加工出相關配套的實驗設備,包括實驗鋼塊、有機玻璃楔塊、固定件、載荷外框裝置等。Depending on how the ground surface is denuded, the feature of the current crustal stress field and rock stress environment can be calculated analyzing the result in this paper : by analyzing the recovering feature of the elastic deformation of the rockmass in unload - stage under various pressures, it has been found there is close relationship between the recovering degree of the elastic deformation of the rockmass and the unloading degree of the pressure the direction of the major principal stress in the crustal stress field is not consistent with the direction of the crushing stress regional tectonics borne during the last tectonic movement. the evolving degree of the regional geomorphology evidently affects the current crustal stress field, which changes from the self - weight stress field to the horizontal stress field, with the changing of the eroding degree of the regional geomorphology ranging from valley area to hilly country to flat country. in valley area, where there is two stress belts, the bankslope s tress belt and the self - weight stress belt within the mountain. the direction of the major principal stress is nearly parallel to the ground surface and inclines towards the valley in the bankslope stress belt. it is nearly vertical in the self - weight stress belt
通過本文的研究成果,根據區域性地貌的演化特徵,我們可以大致地對現今地應力場進行判斷:在分級卸荷條件下,巖體中彈性變形的恢復具有明顯的規律性,這種規律對于研究地應力場的演變是有幫助的;地應力場中最大主應力方向與區域構造形跡在最近的構造運動中所受區域性擠壓應力的方向無明顯的對應性;區域性地貌形態的演化程度對現今地應力場的特徵具明顯的影響,隨著區域性地貌侵蝕程度由峽谷區、丘陵區、平原區的變化,現今地應力場特徵由自重應力場、水平應力場為主含少量自重應力場特徵向水平應力場的規律變化;在峽谷區,山體中具有兩個應力帶:自重應力帶和卸荷應力帶,最大主應力方向在卸荷應力帶中近平行於坡面並傾向于河谷、在自重應力帶中近於直立;根據原始地面遭剝蝕的程度,可以大致地估算最大主應力和中間主應力的量值和方向;在丘陵區和平原區,最大主應力的方向近於水平,並與附近區域性侵蝕盆地和河流的展布方向基本平行,根據原始地面遭剝蝕的程度,可以大致估算其最大主應力的量值;根據區域性地貌形態的特徵來分析工程區的現今地應力場特徵,並進而大致了解巖石的應力環境,這種分析方法得出的結論與許多實際的地應力測試成果基本一致,對于大型水電工程地下廠房和壓力隧洞的設計是有所幫助的。According to the special stratum condition 、 soil parameter 、 pile frame system in the protecting landslide of hongtian jianfeng in yongan city in fujian province, compile a fem program of plane strain and analyze the interaction by nonlinear fem on intensity discount. in the program, duncan - chang model is applied to earth, elasticity model is applied to pile and rock ; goodman element is set between pile and rock - earth and applied to simulate sliding plane and flexible floor ; sequential pole elements with original stress are applied to anchor cable
在程序中土體採用了duncan - chang雙曲線本構模型,樁和錨固層以下的巖體採用了線彈性本構模型,並且在樁和巖土體間設置了無厚度的古德曼( goodman )單元,對于軟弱夾層和已知的滑裂面也採用古德曼單元模擬,錨索採用的是具有初始應力的連續桿單元模擬。Combined with the full scale models tested in - situ of prestressed concrete penstock with double circle unbonded strands and single circle bonded strands of xiaolangdi multipurpose dam project of yellow river, the advantages and disadvantages of two different prestressed systems are analyzed, the concrete stress distributions of the prestressed concrete penstock are induced and summarized during the whole tensioning strands stage. the consistence among the test results, the theory calculating and the three dimensional finite element analysis is proved. therefore, the theoretical method of prestressed concrete penstock is feasible
結合黃河小浪底水利樞紐工程在施工現場進行的採用雙層雙圈環形無粘結預應力鋼絞線和單圈有粘結預應力鋼絞線對排沙洞襯砌混凝土施加預應力的1 : 1模型試驗,對比分析了兩種后張預應力施工體系的優劣,歸納總結了預應力筋束張拉過程中預應力混凝土壓力管道結構管壁混凝土的內力分佈規律,驗證了模型試驗實測數據、理論計算和三維有限元分析結果的一致性,確定了預應力混凝土壓力管道理論計算方法的可行性。On the basis of the theory of thin shells and the non - moment assumption, the equations of motion of the cylindrical shells under longitudinal line - loading are derived in the case of ignoring the shearing stress, and then, the set of partial differential equations are solved by the fourier series method
基於薄殼理論和無矩假定,在略去剪切應力的情況下推導了圓柱殼在縱向線載荷作用下的運動方程,並採用fourier級數法進行了求解。Metallic decorative effect ; moreover, aluminum having even sand plane without surface tension can increase bonding force
而且無表面應力的沙面可大大增強繼后塗層的結合力。Standard test method for non - destructive photoelastic measurement of edge and surface stresses in annealed, heat - strengthened, and fully tempered flat glass
在退火淬火和全回火平面玻璃中邊緣和表面應力的無損光彈性測量的標準試驗方法Measurements demonstrate that the regional tectonic setting apparently does not control the features of the current crustal stress field, the direction of the major principal stress in the current crustal stress field is not consistent with the direction of the crushing stress regional tectonics borne during the last tectonic movement
許多地應力場的實測資料表明:區域性地質構造特徵對現今地應力場並無明顯的控制性,現今地應力場中最大主應力的方向與挽近期區域性擠壓應力方向並非具一一對應的關系。分享友人