应用电子表格进行二元理想体系精馏的逐板计算

利用电子表格Excel进行二元理想体系精馏过程中的逐板计算，可以快速且准确地得到理论塔板数、加料板位置及每一块理论塔板上的汽液组成．     

Finite Element Analysis of Reinforced Concrete Plate Impacted by Block

A new concept of structurally dissipating rock-shed （SDR） was developed by the lab of Tonello IC and LOCIE-ESIGEC （ France）. To decide the dimension of the plate used in SDR, an ANSYS model which could simulate the impact of rock in the centre of the plate was established by Fabien Delhomme. By using this model, some finite element analyses are carried out in the present paper. Firstly, a plate impacted by a block is numerically simulated, the numerical results obtained from different mesh sizes are compared and the accuracy of the finite element model is verified. Then, the dynamic response of the plate impacted at the boundary and in the medium part is computed. By analyzing the stress in rebar, the most dangerous region of impact of plate was found. For a rectangular plate, the most dangerous region is at the corner of the plate when a block drops in. Finally, the whole deformation process of the plate under dropping block was simulated and a simplified definition （ effect zone） to describe the deformation process in different positions of plate was given. From this study, it is found that the impact only affects heavily within the effect zone.     

A generalized plane strain theory for transversely isotropic piezoelectric plates

INTRODUCTION For moderate thickness plate containing notches or holes, neither plane stress nor plane strain theory can describe its true deformation states (Jin and Hwang, 1989). This well known drawback has mo- tivated many analytical and numerical studies carried out to determine the effect of plate thickness on the in-plane stress distribution. Pioneering work on the along depth stress components, i.e. the K-M gener- alized plane strain theory was proposed by Kane and Mindlin (1956)…     

Alfred Wegener—From continental drift to plate tectonics

What is the nature of the force or mechanism that moves massive continents thousands of miles across? What causes violent earthquakes to displace huge landmasses abruptly? How could great mountain ranges like Himalayas and Alps rise to such incredible heights? What makes earth's interior so restless? Answers to some of these questions may lie in understanding the Earth's interior itself.     

利用功的互等法求解集中载荷作用下简支矩形厚板的弯曲问题

在本文中，功的互等法（RTM）被推广应用于求解基于Reissner理论的厚矩形板的弯曲问题，得到了在任意一点作用集中荷载矩形厚板弯曲问题的解析解，并给出了具有实价的计算结果。     

基于沥青混合料性能的环氧树脂改性效果评价

在分析钢桥面铺装层主要病害和特殊工作环境的前提下,分别采用高温车辙试验、低温小梁弯曲试验和控制应力小梁弯拉疲劳试验,研究了不同环氧树脂掺量下的环氧树脂改性沥青混合料的高温稳定性、低温抗裂性和抗疲劳性能.试验结果表明:环氧树脂对这3个方面都有很大的改进效果,但改性效果和树脂的添加量并不是一个无限递增的关系,当添加量超过一定数值以后,改性的效果将趋于平稳.最后就高温、低温、疲劳3个方面分别提出环氧树脂添加量为20%,30%,30%的建议值.     

钛板焊接工艺实践

工业纯钛在防腐设备上的应用越来越广泛，本文从4mm工业纯钛的钛板焊接实践出来，对焊接结构，气体保护和焊接工艺参数的选择进行了分析并提出了一些革新措施，有一定的借鉴意义。     

Investigation of newly developed added damping and stiffness device with low yield strength steel

INTRODUCTIONThisresearchfocusedonusingthemechanicalpropertiesoflowyieldstrengthsteel(LYS)tode-velopanewdeviceforaddeddampingandstiffnessandseismicresistanceofrhombiclowyieldstrengthsteelplate.ThemechanicalpropertiesofLYSandtheeffectofthisnewlydevelopeddevicewereinvestigatedbyexperimentalmethod.Ex-pectedly,thisnewdevicecantakeadvantageofplasticenergyabsorbabilitytoabsorbanddissipatetheenergyofearthquakestablyandensurethesafetyofthemainstructure.Ananalyticalmodelisproposedforanalyzingtheh…     

白桦根的木材解剖学研究

对白桦根次生木质部进行木材解剖学研究，发现其为散孔材，管孔多数为复管孔，少数为单管孔，为同形射线，导管分子穿孔板类型为梯状穿孔板，离析材料中韧型纤维丰富。     

Three-dimensional analysis of a thick FGM rectangular plate in thermal environment

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