Orders of Bounded and Strongly Unbounded Lattice Type

ABSTRACTOne to three layer cyclohexane films confined between mica-like surfaces are studied to elucidate changes in the films' lattice-type. The laterally confined film is in equilibrium with the bulk fluid that is well into the liquid regime of its phase diagram. Monte Carlo simulations are conducted at constant chemical potential, temperature, and V=Ah, where A is the lateral area and h is the separation between the walls. One and two layers of fluid freeze as h increases. The one layer fluid has a triangular lattice, while the two layer fluid exhibits first a square lattice and then a triangular lattice with increasing surface separation. In contrast to previous studies, solidlike order is induced primarily by the strong fluid-solid interaction and is largely a function of pore width. A shift in the relative alignment of the surfaces perturbs the solidlike fluid structure but does not cause the sudden shear melting transition associated with epitaxial alignment of the fluid atoms with the surface. There is a correlation between the shear stress calculated in the computer experiments and that measured in Surface Forces Apparatus experiments.

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STATIC AND KINEMATIC ANALYSIS OF A PLANAR REGULAR BEAM TRUSS WITH A DOUBLE LATTICE

Stroitelʹnaâ mehanika i konstrukcii ◽

10.36622/vstu.2021.30.3.001 ◽

2021 ◽

pp. 7-14

Author(s):

М. Н. Кирсанов

Keyword(s):

Kinematic Analysis ◽

Horizontal Shift ◽

Lattice Type

Предлагается схема статически определимой регулярной балочной фермы решетчатого вида. Обнаружен и исследован случай кинематического вырождения конструкции от числа панелей. Для сосредоточенной и распределенной по нижнему поясу нагрузок методом индукции с привлечением системы символьной математики выводится зависимость прогиба фермы от числа ее панелей. Прогиб вычисляется по формуле Максвелла-Мора. Полученная зависимость имеет вид полинома по числу панелей с переменными, зависящими от четности числа панелей. Получена также формула зависимости величины горизонтального сдвига подвижной опоры. A scheme of a statically determinate regular girder truss of a lattice type is proposed. The case of kinematic degeneration of the structure from the number of panels is discovered and investigated. For concentrated and distributed loads over the lower belt, the dependence of the deflection of the truss on the number of its panels is derived by induction with the involvement of a system of symbolic mathematics. The deflection is calculated using the Maxwell - Mohr formula. The resulting dependence has the form of a polynomial in the number of panels with variables depending on the parity of the number of panels. A formula for the dependence of the magnitude of the horizontal shift of the movable support is also obtained.

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Self-Repairing Algorithm of Lattice-Type Self-Reconfigurable Modular Robots

Journal of Intelligent & Robotic Systems ◽

10.1007/s10846-013-9885-8 ◽

2013 ◽

Vol 75 (2) ◽

pp. 193-203 ◽

Cited By ~ 5

Author(s):

Yanqiong Fei ◽

Chengyuan Wang

Keyword(s):

Modular Robots ◽

Lattice Type

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Analysis on Self-Morphing Process of Self-Reconfigurable Modular Robot

International Journal of Advanced Robotic Systems ◽

10.5772/7232 ◽

2009 ◽

Vol 6 (3) ◽

pp. 23 ◽

Cited By ~ 2

Author(s):

Yanqiong Fei ◽

Yueliang Zhu ◽

Ping Xia

Keyword(s):

Adjacency Matrix ◽

The Self ◽

Geometric Feature ◽

Modular Robot ◽

Driving Function ◽

Lattice Type ◽

Motion Process ◽

Motion Paths ◽

Basic Configuration

The self-reconfigurable modular robot consists of many identical modules. By connecting to/disconnecting from other modules, the whole structure of the robot can transform into arbitrary other configurations. First, the lattice-type self-reconfigurable modular robot is proposed and its disconnected/connected mechanism is analyzed, which can finish self-morphing action. Second, the basic configuration of the module is analyzed with the eigenvector matrix. The motion rules are proposed. Third, the possible motion space is described with the geometric feature of modules which is effective for performing the self-morphing process. Then, the self-morphing motion process is described with the driving function and the adjacency matrix which is useful to solve the computation problem and optimize the motion paths of the robot during the self-reconfigurable morphing process. Final, an experiment of three-module motion and a simulation of multi-module's self-morphing process are shown to prove that the above analyses are effective.

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Reposisi dan Penggantian Menara Transmisi 150 kV

TESLA: Jurnal Teknik Elektro ◽

10.24912/tesla.v21i2.7179 ◽

2020 ◽

Vol 21 (2) ◽

pp. 87

Author(s):

Juara Mangapul Tambunan ◽

Hary Mulyono

Keyword(s):

Power System ◽

Transmission Line ◽

Electric Power ◽

Electric Power System ◽

Transmission Channel ◽

Working Capacity ◽

Lattice Type ◽

Maximum Value ◽

Safe Limit ◽

Standard Set

Transmission line is a very absolute thing in an electric power system. In the distribution of electricity from generating centers to loads (consummers), where the distance is quite far it is done through the transmission line. Transmission channels those are generally used based on construction are the lattice type and steel pole. The transmission channel has a safe limit against other objects around it according to the standard set. The air transmission line uses a TACSR (Thermal Aluminium Conductor Steel Reinforce) conductor which has a working capacity with temperatures up to 1500C. Based on calculations when the distance is 212m with a temperature of 1500C the value of the roof is 9,40m. When the distance is 173m with a temperature of 1500C the maximum value of the roof is 7.8m. When The condition of the temperature and the length of the span affect the value of the roof the greater of the temperature and the length of the span, so the greater of the resistance.ABSTRAK:Saluran transmisi adalah suatu hal yang sangat mutlak dalam suatu sistem tenaga listrik. Dalam penyaluran tenaga listrik dari pusat-pusat pembangkit ke beban (konsumen), dimana jaraknya cukup jauh maka dilakukan lewat saluran transmisi. Saluran transmisi yang umum digunakan berdasarkan konstruksinya adalah tipe lattice dan steel pole. Saluran transmisi ini memiliki batas aman terhadap obyek lain yang ada di sekitarnya sesuai standar yang ditetapkan. Saluran transmisi udara menggunakan konduktor jenis TACSR (Thermal Aluminium Conductor Steel Reinforced) yang memiliki kemampuan kerja dengan suhu sampai 1500C. Berdasarkan perhitungan pada saat jarak span 212 m dan dengan suhu 1500C andongan maksimumnya bernilai 9,40 m. Pada saat jarak 173 m dan dengan suhu 1500C andongan maksimalnya 7,8m. Pada saat jarak 233 m dengan suhu 1500C andongan maksimumnya adalah 10,58m. Keadaan suhu dan panjang span mempengaruhi nilai andongan, semakin besar suhu dan panjang span maka nilai andongan akan semakin besar.

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