凸体

随机针偶与凸体K相交的几何概率问题

A problem of geometric probability for random pairs of needles intersecting a convex body K

继而对于每一个关于原点对称的凸体，应用Jensen不等式和几何体ΓpK的单调性，分别给出了投影不等式Petty猜想的Lp-形式的一个逆向不等式和Lp-Petty投影不等式的一个逆向不等式。

In addition , for each origin-symmetric convex body , applying the Jensen inequality and the monotonicity of the geometric body Γ - pK , the reverses of Lp-version of the Petty 's conjectured projection inequality and the Lp-Petty projection inequality were given respectively .

凸体的p次径向平均体的几个性质

Several Properties of the Radial pth Mean Bodies of Convex Bodies

基于有理Bézier曲面任意光滑凸体的雷达散射截面

The RCS of the Smooth Convex Object Based on the Rational B é zier Surface

在凸体理论中，投影不等式的Petty猜想是一个著名的公开问题。

Petty 's conjectured projection inequality is a famous open problem in convex bodies theory .

并分析研究了产生火山口状、球冠状微凸体、W状微凸体三种不同毛化形貌的形成机理。

Furthermore , the appearance mechanism of Crater-Shaped , Spherical Cap Slight Protuberance and W-Shaped Slight Protuberance laser surface texturing roughness profile were analyzed and studied .

本文建立了En中的凸体与其位似体的包含测度的相等关系。

In this paper , we establish the equality relation of inclusion measures of convex bodies and their homothetic bodies in En .

基于Minkowski差构造技术的凸体碰撞检测算法

The Collision Detection Algorithm for Two Convex Curved Objects Base on the Minkowski Difference

通过STAR－1型表面轮廓仪对粗糙表面实际形貌的测定，分析得到了实际表面微凸体的高度分布和曲率分布，发现微凸体的高度分布并非高斯，而曲率分布则呈随机状态。

Surface roughness parameters were measured using STAR-1 profilometer . The results showed that the distribution of the peak height was different from the profile height distribution and was not Gaussian , but the curvature distribution was random .

采用有限元分析软件ANSYS对半球形微凸体接触应力和变形进行了仿真计算，并用销盘滑动磨损试验数据给予验证，证明了所建立的仿真模型是可行的。

Then , contact stress and deformation of a half sphere micro-convex was simulated and calculated by using finite element analysis software ( ANSYS ), and the testing model of pin-on-disc sliding wear was proofed through test data .

利用Schamberg模型计算凸体的气动力矩

Computation of aerodynamic moment of convex bodies using Schamberg model

凸体的n-j维截面函数的性质及应用

Properties and Applications of n-j-Dimensional Section Function of Convex Bodies

对凸体理论中的一类二阶完全非线性偏微分方程的正解给出了C1先验估计。

The authors in this paper get a C ~ 1 apriori estimate for the positive k-convex solutions of some fully nonlinear second order partial differential equation , which arises in the convex bodies theory .

在干摩擦条件下，纯PTFE板料主要发生粘着磨损和微凸体刨切，3层复合材料主要是磨粒磨损，钉板型复合材料的磨损机理是粘着磨损和磨粒磨损共同作用。

Under dry friction condition , the wear mechanism of pure PTFE material was adhension wear and ting convex grain planning , the wear mechanism of three-layer composite was abrasion , the wear mechanism of copper nail plate composite was conjunct effect of adhesion and abrasion .

Schamberg的超热力学自由分子流粒子&表面作用模型已用于计算凸体的阻力系数。

The particle-surface interaction model in " hyperthermal free-molecule flow " postulated by Schamberg has been used to calculate drag coefficient of convex bodies .

通过Bernstein方法，对来源于凸体几何中的Christoffel-Minkowski问题，建立了球面上的退化的Hessian方程的C（~1,1）先验估计，在一定程度上推广了Krylov的结果。

Based on Bernstein 's technique , this paper established the C ~ ( 1,1 ) a priori estimates for degenerate Hessian equation on S ~ n , which is corresponding to Christoffel-Minkowski problem in convexity geometry . It refined the results of Krylov .

试验表明：中小型柴油机（1100A、495Q）在工作过程中活塞环&缸套摩擦副摩擦面的最高温度（不是微凸体的闪点温度）接近220℃。

Experiments show that the maximum temperature at f r ic - tional surfaces of piston ring-cylinder liner during practical work ( no flash temperature of asperity ) is close to 220 ℃ .

关于凸体的Brunn-Minkowski不等式是凸体理论的精髓，混合投影体的Brunn-Minkowski不等式也由Lutwak所证明，我们则证明了投影体的极体的Brunn-Minkowski型不等式。

The classical Brunn-Minkowski 's inequality is the heart of convex bodies theory . The Brunn-Minkowski 's inequality for mixed projection bodies was obtained by Lutwak . We find the Brunn-Minkowski 's inequality for the polar of mixed projection bodies .

多微凸体粗糙面接触的有限元分析

Finite element analysis of multi-asperity surface contact under normal distribution pressure

凸体几何一些经典不等式的等价性

Equivalence Properties of Some Classical Inequalities for Convex Bodies Geometry

一种快速的三维凸体干涉检查方法

A new method of rapid detecting for interference between 3D convex objects

基于可见性查询的凸体碰撞检测算法

A New Collision Detection Algorithm for Convex Polyhedra Based on Visibility Query

凸体及星体的不等式与极值问题

Inequalities and Extremum Problems for Convex Bodies and Star Bodies

混合润滑时各向异性粗糙表面微凸体载荷分配的研究

Asperity load sharing of anisotropic rough surfaces in mixed lubrication

多个函数定义的空间凸体高阶磨光

Higher Order Smooth Fitting for SD Space Convex Body by Multiple Functions

壁面凸体层流绕流流场的数值计算

Numerical Computation of Laminar Flow Field around the Lug on Wall Surface

平面凸体的完全不等式组

Complete systems of inequalities for convex body in plane

有界凸体宽度的一点注记

A Note of Width on the Limited Convex Body

凸体的曲率映象与仿射表面积

Affine Surface Areas of Curvature Images for Convex Bodies

河口海岸凸体冲刷坑最大深度及形态

The maximum depth and morphology for the convex in estuaries and along coasts