geometric strength 中文意思是什麼
geometric strength
解釋
幾何強度-
The thesis developed the optimization design software of geometric parameter for the worm gear including strength check module, the drawing contact lines module, the change lines of tooth thickness of worm, and the parametric modelling software for the reducer which includes parametric modelling of parts and assembly. the cad prototype system is very convenient because of its accessible interfere, simple operation and written in chinese. by input design parameters ， the cad system can make optimization design and strength check for the worm gear ， draw contact lines of tooth flank of worm - gear and change line of tooth thickness of worm ， judge if the tooth flanks of worm undercut and if the sideward tooth of worm - gear hob come to a point ， make project design and structure design for the reducer and draw its 2d parts and assembly
研究和開發了平面二次包絡環面蝸桿傳動的參數優化設計和校核軟體系統：包括幾何參數設計計算模塊，強度校核模塊，繪制齒面接觸線模塊，蝸桿齒厚變化曲線模塊和蝸桿根切判別模塊；開發了平面二次包絡環面蝸桿減速器外形與結構尺寸數據庫以及傳動效率數據庫，建立了平面二次包絡環面蝸桿傳動公差及極限偏差數據庫；開發了平面二次包絡環面蝸桿減速器參數化建模軟體：包括零部件的參數化建模模塊和裝配圖的參數化建模模塊，其中零部件的參數化建模包括蝸桿軸系的參數化建模、蝸輪軸系的參數化建模、箱體的參數化建模、端蓋的參數化建模、軸承的參數化建模和其它零部件的參數化建模軟體模塊。 -
Besides, this paper adopts the random finite element method, uses geometric and physical mechanical parameters that are relevant to lining weight of surrounding rock, coefficient of lateral pressure, height or buried depth of vertical loading, elastic resistance coefficients of surrounding rock, elastic modulus of support structure, unit weight of concrete, thickness of the structure as well as torsional strength and compression strength of concrete and etc., as random variables, applies the monte - carlo method to sampling by computer, preliminarily evaluates the reliability of bearing capacity and stability of molded concrete lining of the xuefeng mountain tunnel, and obtains the related displacement of the lining, mean value and variance of internal force, and computed the reliability index of lining structures
此外，本文採用隨機有限元方法，將圍巖容重、側壓力系數、垂直荷載高度或埋深、圍巖的彈性抗力系數、支護結構的彈性模量、混凝土容重、結構的厚度以及混凝土的抗扭與抗壓強度等與襯砌結構有關的幾何與物理力學參數作為隨機變量，應用蒙特卡洛理論進行計算機隨機取樣，對雪峰山隧道模注混凝土襯砌的承載力與穩定性的可靠度進行了初步評估，得出了襯砌的相關位移與內力的均值和方差，並計算出了相應的襯砌結構可靠指標。 -
The experimental tests were conducted to obtain the probabilistic statistic distribution of design variables of cfrp wound pressure vessels ( such as elastic constants, strength of lamina, winding technology parameters and the geometric sizes ). and a goodness of fit test using the kolmogorov - smirnov method was used to get the best probabilistic distribution of design random variables
對cfrp纏繞壓力容器各重要設計變量（單向板彈性常數及其強度、壓力容器纏繞工藝參數及幾何尺寸）的隨機統計特徵進行了試驗研究，並根據kolmogorov - smirnov檢驗法，獲得各設計隨機變量的最優概率統計分佈。 -
Besides, on the basis of the test data under bending and torsion and the theoretical analysis on the tubular, the relative relationship between the bearing values is derived. second, based on the elastic theory, this paper deduces the rules of stress distribution and main physical and geometric parameters by analyzing the elastic stress distributions when the tubular is under such conditions as torsion, bending, shearing, combined bending and torsion, and combined shearing and torsion ; additionally, taking the strength criteria of concrete and steel as reference, the paper proposes a set of theoretic equations for the relative relationship between the bearing values
本文利用彈性理論對扭轉、彎曲、剪切、彎扭聯合作用、剪扭聯合系列作用下的構件彈性應力分佈進行了研究，得出應力分佈與主要物理和幾何參數的規律；同時引入混凝土及鋼的強度準則，得出了彎扭、剪扭復合應力作用下的承載力相關關系的理論方程，可供工程設計使用。 -
The main work of this paper is establishing the 3d model of the whole bus body and implementing the strength analysis, stiffness analysis, modal analysis and road surface spectrum analysis, synthesized considering the geometric properties, physical properties, material properties. the appraisal to the mechanics performance is produced. the suggestion of the structure improvement is put forward based on the analysis result and is adopted by nanjing iveco company
本文主要工作是綜合考慮對象的幾何特性、物理特性、材料特性，進行了整車三維數模的建立;實現了nj6826tmf車的車身強度分析、剛度分析、固有頻率振型分析和路譜分析，在結構的力學性能上給出了相應的評價;根據分析結果，提出結構改進建議，並得到南汽的采納;對該車的超重問題，以輕量化為目標，提出使nj6826tmf輕量化的設計方案，供南汽參考。 -
Local buckling capacity of steel composite beam subjected to combined bending, shear and patch loading is one of key problem in steel structures design. the computational formula for local stability of web was based on the assumption of infinite - elastic perfect plates in the steel structures design code ( gbj17 - 88 ). but in the revised code ( gb50017 - 2003 ), this formula was made big change with reference to british code ( bs5950, partl ) and australian code ( as4100 ), the related research result of our country was included as well. in the modified formula, influence of early geometric imperfection and elastic - plastic buckling stage were considered, which is compatible with both actual circumstance of engineering and the strength formula of beams under bending stresses ( considering partial plasticity of the section ). in this paper, the preceding problem is deeply analyzed and studied, considering the effects of various geometric parameters and stress combinations on buckling critical stress of web, the revised local buckling correlative formula for transverse and longituded stiffened web panels under combined stresses is analyzed and verified by finite element method
組合鋼梁腹板在彎、剪及局壓復合應力作用下的局部屈曲承載能力是鋼結構設計中需考慮的問題，新的《鋼結構設計規范》 （ gb50017 ? 2003 ）對此部分內容作了較大改動，原規范中關于腹板局部穩定的計算公式是基於無限彈性的完善板假定；新的規范則參考了英國規范（ bs5950 part1 ）及澳大利亞規范（ as4100 ）並結合我國相關研究成果，考慮了屈曲進入彈塑性階段以及初始幾何缺陷的影響。這不僅與工程實際情況相符，而且也與鋼梁在彎曲應力作用下允許截面部分進入塑性的計算公式相協調。 -
The buckling and ultimate strength of ship plating normally depend on a variety of influential factors, namely geometric / material properties, loading characteristics, initial imperfections ( i. e. initial deflections and residual stresses ), boundary conditions and corrosion, fatigue cracking
船體板的屈曲和極限強度取決于很多影響因素，主要有：板的幾何尺寸、材料特性、載荷特徵、初始缺陷（如初始變形和焊接殘余應力） 、邊界條件以及腐蝕的影響、疲勞裂紋等。 -
The full loading - displacement path had been traced, and the ultimate strength of the tubular joints had been determined. based on a series of numerical analysis of steel tubular t - joints, y - joints and k - joints of various geometric parameters, the effect of the various geometric parameters on ultimate strength had been investigated. the method of the reinforce joints had been offered
針對不同幾何參數的t 、 y 、 k型方主管圓支管鋼管相貫節點進行系統的數值模擬試驗，分析各幾何參數對節點靜極限承載力的影響，得出節點靜承載力隨各幾何參數的變化規律以及節點的破壞形式，並給出了相應的節點加強方案。 -
Because of the influence of the behavior of joints and various complicated geometric shape, not only material and geometrical nonlinear but also the inelastic property of joints should be included in the analysis regarding the ultimate strength of tubular joints
由於鋼管節點的受力特性、幾何形狀等因素都比較復雜，對管節點進行靜承載力性能研究往往既要考慮材料非線性和幾何非線性，又要考慮管節點的整體塑性發展。
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