1) variable curvature
变曲率
1.
Numerical method research for shakedown of rolling-sliding contact on variable curvature surface;
变曲率连续滚滑接触安定性的数值方法研究
2.
In order to consider bending and torsion effect of curved box girder varying with transverse axis and longitudinal axis,a spatial finite element method considering initial curvature and variable curvature was presented.
为计入曲率沿横向和纵向变化对曲线箱梁弯扭效应的影响,提出了考虑初曲率和变曲率影响的空间分析有限元方法。
3.
Box-girder bridge has become increasingly popular in construction of curved bridge, the conformation of it has been presented the characteristic of variable curvature and variable height.
随着大跨度曲线箱梁桥的日益增多,截面构造呈现出变曲率、变高度的特点,迫切需要一个能充分反映曲线箱梁拉、压、弯、扭、翘曲和畸变等复杂受力状态,同时又能计算桥梁结构逐步施工过程和收缩徐变效应的分析理论和计算程序。
2) deformation curvature
变形曲率
1.
Based on analyzing the mechanism of laser peen forming(LPF),a theory of pure bending with small deflection of metal sheet induced by laser peening was presented,the estimated formula of sheet deformation curvature after LPF was derived,and the mathematical model among radius curvature of deformation,depth of residual stress and the material property was established.
以外弯矩替代激光喷丸后的残余应力层,把激光喷丸板料变形过程等价为平板的纯弯曲问题,推导出激光喷丸后板料的变形曲率估算式,建立了板料变形曲率半径与残余应力层深度、残余应力的大小及分布和材料性能之间的关系模型。
2.
Due to the distinct difference in tensile and compressive properties,the position and deformation curvature of curved neutral layer will change with time for the!strata in a creep state.
由于岩石材料抗拉与抗压性能的明显差异,使岩层受蠕变作用时,其弯曲中性层位置及变形曲率都将随时间变化。
3.
In this paper,theories of flexibility difference and deformation curvature which identify structural damage are introduced.
文章介绍了柔度差和变形曲率用于结构损伤识别的理论。
3) curvature deformation
曲率变形
1.
Study on influence of curvature deformation of ground surface in coal mine on free way;
地表曲率变形对高速公路影响的研究
5) gradually varied curvature
曲率缓变
1.
Turbulence characteristics of the flow over gradually varied curvature bucket;
曲率缓变型反弧段水流的紊动特性
2.
The time-averaged characteristics of the flow passing through a gradually varied curvature bucket;
曲率缓变型反弧段水流的时均特性
6) variable curvature well
变曲率井
1.
Based on Love equilibrium equations for a curved and twisted bar in space,the 2-D equilibrium equations of the tubular restrained by the radial wall of a variable curvature well are obtained by introducing of the radial constraint.
基于Love的空间弯扭杆平衡方程,通过引入井壁约束条件导出了平面变曲率井内受径向约束管柱的平衡方程。
补充资料:变分原理(复变函数论中的)
变分原理(复变函数论中的)
omplex function theory) variational principles (in
f日In}F(O(只,t),0)l}乙+:d乙=】nll,—}——,厂:’、一几t)〔.匕,日亡卜OC一“C’日当r,0时下*(:、,t)/:在B*的紧子集上一致地趋于0(k一1,2).该结果已被推广到二连通区域(13」).若加以进一步的限制,就能得到映射函数在B、(t)内关于表征所考虑区域边界形变的参数的展开式余项的估计式(在闭区域内一致)(【4」).份卜注】存在大量的变分原理,见【A3}第10章.亦可见变分参数法(variation一parametrie nlethod);肠”ner方法(幼wner Tnetl〕ed);内变分方法(internalvariations,服t】1‘对of). 还可见边界变分方法(boundary variations,me-tll‘xlof).M.schiffer对单叶函数的变分方法做出了重要的贡献,见〔A3」第10章.变分原理(复变函数论中的)Ivaria石0“目州址妙es(加e网Plex五叮‘6佣山印ry);。即“a双“OHH从e nP一”u“nHI 显示在平面区域的某些形变过程中那些支配映射函数变分的法则的断语. 主要的定性变分原理是ljxlelbf原理(Linde场fpnnciPle),可描述如下.设B*是z*平面上边界点多于一点的单连通区域,06B*,k=1,2;设二(;,B*)是对于B*的Green函数的阶层曲线,即圆盘王心川C!<1}到B*而使原点保持不变的单叶共形映上映射下圆周C(r)二{乙:{心}二;}的象,o<;<1.进而设函数f(:,)实现B,到B:的共形单射,f(0)‘O,在这些假定下有:l)对于L(:,B,)上任一点:?,存在位于阶层曲线L(:,BZ)上(这仅当f(B,)二BZ才有可能)或其内部的一点与之对应;及2){f’(0)1蕊}夕‘(0)},其中g(:,)满足g(0)二o是Bl到 BZ的单叶共形映射(等号仅当f(B1)=B:时成立).Lindebf原理系从Rien坦nn映射定理(见Rle-n.lln定理(Rierl飞幻In theorem))与Sdlwarz引理(Schwarz lemrr必)推出.相当精细的构造使之能够求出由被映射区域的给定形变所引起的映射函数的逐点偏差. 定量的基本变分原理系由M.A.几aBpeHTbeB(〔1」)获得(亦可见【2]),可叙述如下,设B:是具有解析边界的单连通区域,0任B!.假定存在给定区域族B,(r),0‘Bl(r),0(t蕊T,T>O,B;(0)二B,,具有JOrdan边界rl(t)={:一z,=0(之,t)},0(又续2兀,0(0,t)二Q(2二,r),其中Q(又,r)关于t在t二O可微且对又是一致的;设F(::,t),F(0,t)=0,F:.(0,t)>O,是把B,(t)单叶共形映射为BZ二{22:I:21
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条