折叠纸盒作业线设计

作业线是折叠纸盒结构设计中的重要元素,用于管式折叠纸盒的盒体设计、非管非盘式或部分盘式折叠纸盒的盒底设计.根据盒型,如果不能利用成型线作为作业线,则需重新设计新线.作业线将会影响到纸盒相关部分如盒盖、盒底、或间壁板结构的设计.     

斜线和曲线设计在纸盒包装结构中的应用

斜线和曲线设计是包装结构的两个重要的设计方法,斜线和曲线的变化在一定程度上决定了包装的外形。纸盒的曲线设计主要是对管式、盘式、管盘式折叠纸盒进行分析设计,其中对管式折叠纸盒的曲线设计比较多,把管式折叠纸盒又细分为棱边上的曲线设计、盒体上的曲线设计、盒盖/盒底上的曲线设计、造型曲线设计四个方面。本文主要在设计中通过改变斜线和曲线设计,从而带来异型效果。     

折叠纸盒的平分角设计

平分角设计就是通过把折叠纸盒的某一平面角进行平分,从而实现某种结构或要求的设计方法。它广泛用于管式或盘式的异型盒、自动折叠纸盒以及其它需要重叠对折和其它要求的结构中。     

省资源非管非盘式折叠纸盒间壁板方向性研究

目的完善非管非盘纸盒设计理论,丰富纸盒体板间壁结构设计技巧,灵活设计多间壁非管非盘式折叠纸盒以节省纸板。方法针对水平裁切及斜向裁切方式设计的间壁板结构,利用拆分与组合方式对省资源的非管非盘式折叠纸盒设计进行研究。结果提出了间壁板方向性的概念,指出了在水平裁切线间壁板和斜向裁切线间壁板2种结构的方向判定标准。结论水平和斜向间壁裁切线均具有方向性,任何单方向与双方向裁切均可成形。方向性设计增强了盒型结构设计理论支撑,丰富了盒型,拓展了设计思路。     

盘式自动折叠纸盒结构设计中的数学模型

盘式自动折叠纸盒因其方便性得到了广泛的应用.本文讨论了盘式自动折叠纸盒的折叠角及体板高度等数学问题,为该类包装纸盒CAD开发建立了有效的数学模型.     

浅谈盘式纸盒结构设计的由来

盘式纸盒是折叠纸盒中非常重要的一种基础纸盒,在纸盒包装设计实践中有着较为广泛地应用;学习盘式纸盒结构是纸盒结构课程中的重要内容,被安排在筒式纸盒结构的学习内容之后,对于初学者而言,笔者建议不妨将盘式纸盒看作由基础的筒式纸盒稍加演变而来,在了解盘式纸盒与筒式纸盒的结构关系的基础上举一反三。     

盘式自动折叠纸盒结构设计

重新定义盘式折叠纸盒,简介两种典型结构,给出了内外折叠角的求解公式,使传统纸盒从长方体模式向多样化发展。     

拼合法在折叠纸盒结构CAD系统中的应用

依据折叠纸盒结构的特点，提出由盒片零件拼合成盒片的折叠纸盒结构设计思路，详细地介绍了拼合法的基本原理及其在盒片结构设计中的应用。     

纸盒的高速自动折叠机构及其原理

根据纸盒自动化生产的条件,分析适合自动化、机械化生产的盒型结构及其成型机构.运用变胞原理分析1种典型的盒型结构,对纸盒的构态变换过程进行分析,并生成了典型纸盒盒片的折叠矩阵,该矩阵可以用于复杂盒型自动折叠机构的运动轨迹设计.     

折叠纸盒结构设计及CAD

简述了国内外纸盒设计的现状与发展趋势,修正了纸盒盒片结构尺寸的计算式,提出了胶粘式、插入式、锁底式折叠纸盒的设计原则;编写了折叠纸盒结构ZHCAD软件及盒片图形库,可方便地选择、组合、设计纸盒结构盒片图,优化排料。绘制模切排料图,印版、背衬加工轮廓图,保证了精度,为纸盒CAM提供了必要条件,而且便于实现纸盒包装自动化。     

Characteristics of mechanical properties of materials in studies of conditions of attainment of marginal states

It is shown that conditions of attainment of marginal states in the material of structural components are formulated on the basis of analysis of force and deformation criteria of formation and development of destruction. The parameters of these criteria are data on types of structural materials, standard and special characteristics of their mechanical properties, structural forms of considered elements of the equipment, and their operating stress loading. In this case, the construction of a system of state equations for describing interrelation of current damage, external actions, and responses to them is based on the concept of calculating variations in properties of materials at all stages of the design life cycle.     

Estimation of potentialities of methods of summation of direct measurement errors

Conventional methods for summation of direct measurement errors are considered. Conditions under which these methods provide consistent results are stated. It is proposed to utilize for characteristic of the total error, its interval estimator or the half-sum of the value obtained by adding up its arithmetic and geometric random errors.Translated from Izmeritel'naya Tekhnika, No. 4, pp. 10–12, April, 1995.     

Evaluation of optical properties of highly scattering media by moments of distributions of times of flight of photons

A novel method for the determination of the optical properties of tissue from time-domain measurements is presented. The data analysis is based on the evaluation of the first moment and the second centralized moment, i.e., the mean time of flight and the variance of the measured distribution of times of flight (DTOF) of photons injected by short (picosecond) laser pulses. Analytical expressions are derived for calculation of absorption and of reduced scattering coefficients from these moments by application of diffusion theory for infinite and semi-infinite homogeneous media. The proposed method was tested on experimental data obtained with phantoms, and results for absorption and reduced scattering coefficients obtained by the proposed method are compared with those obtained by fitting of the same data with analytical solutions of the diffusion equation. Furthermore, the accuracy of the moment analysis was investigated for a range of integration limits of the DTOF. The moment analysis may serve as a comparatively fast method for evaluating optical properties with sufficient accuracy and can be used, e.g., for on-line monitoring of optical properties of biological tissue.     

Determination of parameters of microstructural inhomogeneity of deformation of metals by the method of modeling

The article suggests a method of evaluating the microstructural inhomogeneity of deformation of metals by modeling. The method includes the measurement of deformations of metal according to meshes of a dividing grid with small base and the calculation of the distribution parameters of microdeformations in model representation. It is shown that the modeling method makes it possible objectively to evaluate the microinhomogeneity of deformation of metals independently of the chosen mesh size of the dividing grid. New structural characteristics are introduced: the base and wave of variation expressing the degree of crumbling or amalgamation of metal grains by inhomogeneity of deformation.Translated from Problemy Prochnosti, No. 7, pp. 40–44, July, 1991.     

Assessment of intakes of mixtures of radionuclides

Australia has several uranium mines and a large number of mineral sand mines, with associated processing facilities. Exposures resulting from these mining and processing operations usually involve intakes of mixtures of radionuclides. This work describes the development of a suite of first order, linear compartment models, based on the ICRP Publication 66 respiratory tract model, and an analytical solution to the decay equations, for assessing the consequences of such intakes. The computer programs based on these models directly compute excretion, organ retention and organ and whole-body doses for intakes of either single radionuclides or any mixture of radionuclides belonging to the same radioactive decay chain. The intake can be via inhalation, ingestion or injection, and can be acute, chronic or of limited duration. The starting concentration and degree of secular (dis)equilibrium can be specified for each radionuclide. No assumptions need to be made about the relative magnitudes of the radioactive half-lives of the different nuclides.     

On the mechanism of action of inhibitors of hydrogenation in the process of electrodeposition of metals

We develop a new approach to the investigation of the effect of inhibitors of hydrogenation of the base in the process of electrodeposition of metals. We established the relationship between the structure of molecules of the inhibitor, their ability to interact with atomic hydrogen, their adsorption properties, the contents of various forms of hydrogen in steel, and physicomechanical parameters of the latter. On the basis of the results of quantum-chemical computations of electron parameters of molecules, we demonstrate the possibility of prediction of the efficiency of inhibitors of hydrogenation and regularities of changes in the strength and plastic properties of steel. Dnepropetrovsk State University, Dnepropetrovsk. Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 32, No. 6, pp. 7–17, November–December, 1996.     

Methods of investigating the solvability of systems of linear equations of thermoanemometry

Use of thermoanemometry for the investigation of turbulent flows often leads to systems of linear equations that are difficult to solve. A numerical method of solution, in which measurement errors are taken into account approximately, is proposed for the investigation of solvability of such systems of equations.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 30, No. 5, pp. 811–820, May, 1976.     

Assurance of the Uniformity of Measurements of the Power of Laser Radiation

On the basis of an analysis of the principle underlying the construction of standards and systems designed for reproduction of the unit of mean power and energy of laser radiation, it is shown that these standards consist of unified subsystems that carry the principal metrological load. By means of such a division, it is possible to realize a systems-engineering synthesis of standards with preassigned error. __________ Translated from Izmeritel'naya Tekhnika, No. 11, pp. 20–23, November, 2005.     

方波幅度的测量不确定度

介绍了用众数法评价方波幅度时的不确定度分析和评价过程;讨论了主要的不确定度来源,包括众数判别区间的影响、波形测量系统幅度测量误差的影响等等;给出了减小不确定度的主要措施,并结合一个实例,给出了方波幅度的不确定度评价结果。     

Analysis of the specific features of loading of the elements of landing gears of aircrafts aimed at the evaluation of the load-bearing capacity of the structure

We propose a computational scheme of the aircraft nose landing gear and perform the analysis of weak sections in the landing-gear lever by the finite-element method. We determine the loading modes in which the landing-gear lever is subjected to disproportional cyclic loads, which should be taken into account in the evaluation of the service life and determination of the properties of applied materials. __________ Translated from Problemy Prochnosti, No. 4, pp. 87–93, July–August, 2008.