Mechanical energy

Buckling and postbuckling behaviors of porous functionally graded graphene platelets-reinforced composite (porous FG-GPLRC) cylindrical shells with stiffeners subjected to external pressures are presented in this paper. Three distribution types of porosity in the shells are considered. The smeared technique for stiffeners is employed to model the mechanical behaviors of the stiffened shells.

13p viengfa 28-10-2024 3 2   Download

This paper investigates the vibration characteristics of a commonly employed mechanical structure, the cantilever beam, concerning its potential for direct electricity harvesting from piezoelectric crystals. Piezoelectric materials are renowned for their ability to generate electric charges when subjected to mechanical stress.

9p viyoko 01-10-2024 4 1   Download

The paper presents a series of laboratory tests for California Bearing Ratio (CBR) to investigate the bearing capacity and the failure mechanism of nonwoven geotextile reinforced clay. The variation of the tests included the number of reinforcement layers and compaction energy.

16p vifaye 20-09-2024 2 1   Download

This study aims to investigate the effectiveness of the green microwave technique in producing 1T/2H-MoS2 nanomaterials using polyol solvents. The paper presents a thorough analysis of the structural and property characteristics of the synthesized materials and elucidates the underlying chemical mechanism that governs the formation of hybrid-phase nanostructures. Additionally, the role of polyol solvents in the practical synthesis of nano MoS2 under microwave heating is evaluated and explained.

15p xuanphongdacy06 18-09-2024 1 1   Download

This work demonstrated the potential of US for mitigating membrane fouling. However, the integration of the US transducers within the membrane system will be a major challenge for the application of US in membrane cleaning. It is more appropriate that US is used as pre-treatment to the membrane system, the transducers can be placed prior to the coagulant feed line. Further work on the determination of the detailed mechanisms associated with enhancing coagulation would enable optimisation of the system with regard to process, cost and energy efficiency.

108p runthenight05 01-03-2023 7 3   Download

There were only limited researches on the properties of 3D periodic cellular materials, especially for 3D periodic cellular materials with Schwarz primitive structure which have potential to be used for energy absorption. The objective of this study is to investigate the energy absorption, compressive strength and deformation pattern of the 3D periodic cellular materials with Schwarz primitive structure, which possesses optimum bulk modulus. The study is planned to provide these important research issues of such 3D cellular materials for energy absorption applications.

77p runthenight04 02-02-2023 5 2   Download

Nowadays, the need for energy is increasing more and more. It is more difficult to acquire new resources in various fields than to preserve existing energy resources. Although Turkey is a very rich state in terms of various energy resources, misuse of these resources can even lead to conflicts that may occur between the states in forthcoming years. In today’s economic conditions, we can only protect our energy resources with the correct way of management.

16p tanmocphong 29-01-2022 12 2   Download

The numerical wedge splitting tests show that in the case of brittle materials, the lower post-failure stress limit defined in the concrete damaged plasticity model resulted in energy consumption for crack propagation exceeding the defined fracture energy (114% higher in the case of a brittleness number of 4.4).

9p guernsey 28-12-2021 12 0   Download

Lecture Physics A2: Atomic physics - PhD. Pham Tan Thi present the content history of atomic model, quantum mechanical atomic theory, Schrödinger Equation in three dimensions, particle in a three-dimensional box, energy degeneracy,...

39p xusong 21-07-2021 31 2   Download

The main objective of the thesis is to provide general methods to control oscillation based on measurement of energy flow, namely: Find the optimal solution for passive control systems based on energy flows; propose the semi-active control algorithms to control the energy flow.

27p capheviahe27 23-02-2021 20 3   Download

C2H5OH has been using as an alternative fuel for decades; HO2 also plays a pivotal role in the combustion. The kinetics and mechanism for the reaction between C2H5OH and HO2 radical have been investigated using the molecular parameters for the reactants, transition states and products predicted at the CCSD(T)//B3LYP/6-311++G(3df,2p) level of theory.

7p tamynhan6 14-09-2020 16 1   Download

In this work, we investigated the adsorption mechanism of acetone and toluene on the surface of silicene by the quantum simulation method. The images of the potential energy surfaces for different positions of the adsorbate on the silicene surface were explored by Computational DFTbased Nanoscope tool for determination of the most stable configurations and diffusion possibilities.

8p tamynhan6 14-09-2020 24 3   Download

For this, the present work aims to familiarize the mechanical behavior of different materials, in our study we performed a comparison between the different specific energies elastic phase of the elements of study.

6p lucastanguyen 01-06-2020 7 1   Download

This paper was carried out with the purpose of reviewing, classifying and testing the existing methods for determination the Bond Ball Mill Index.

15p lucastanguyen 01-06-2020 20 2   Download

The study reflects as how on one hand the needs of market has to be catered and on the other, consumer interest has to be protected by the regulator. The study encompasses an overview of the Indian energy sector.

15p guineverehuynh 21-06-2020 14 2   Download

When a satellite is in orbit, micro vibration generated by its actuators (such as reaction wheels, deployable mechanisms, etc.) will affect the imaging quality of the camera. Viscoelastic materials are utilized as passive isolators to reduce these micro vibrations due to their simple construction and excellent energy dissipation capacity.

8p tohitohi 19-05-2020 14 0   Download

The aim of this paper is to provide a theoretical analysis on the mechanical power of the mass spring’s system. Some tests are conducted to experimentally evaluate the theoretical analysis and to investigate the mechanical energy ability of this concept.

12p tohitohi 19-05-2020 12 0   Download

Objective of the thesis For the purpose of building a model of electrical generator for sea wave energy, the device operates efficient and in suitable to Vietnam's sea condition; determining the optimal damping coefficient of the generating motor, model parameters to received the maximum output power; design, fabrication of the electrical generator with the output voltages are 12 VDC, 220 VAC frequency 50 Hz and pure sine wave.

27p xacxuoc4321 08-07-2019 45 6   Download

To provide high shunt impendence with low power losses, an 81.25 MHz continuous wave (CW) radio frequency quadrupole (RFQ) accelerator has been designed and machined as parts of the Low Energy Accelerator Facility (LEAF). In this paper, the mechanical structure and the main processing technology of the RFQ cavities are described according to the physical and geometric parameters requirements of the RFQ. The fabrication of the RFQ has been completed and the test results agree well with the design requirements.

5p minhxaminhyeu3 12-06-2019 13 1   Download

This paper presents results of numerical simulation for a wave energy converter using linear permanent magnet generator. Using a linear permanent generator has the advantages of simple structure, minimizing the mechanical loose…

6p nguyentrinhminhbao 10-06-2019 10 2   Download