Search
419 articles for “Dynamics”
-
Study of vibration and dynamic analysis of machine foundation in ansys for deferent geometry
Abstract: The analysis of Machine Foundation involves not only static loads but also the dynamic loads which arecaused due to the working of the machine. Therefore, the machine foundation should survive these loads. Therefore,it becomes vital to reduce the natural frequency of soil beneath the foundation. The object of the project is to preparean explanatory handbook type documentation based on Indian Standards for the analysis and design of frame typemachine foundation …
Published in International Journal of Structural Engineering and Analysis · Vol. 7, Issue 1, 2021 · pp. 24–30 Read article
-
Analytical study of non-linear dynamic analysis of skew bridge
Abstract: After earthquakes, the function of highway bridges is an important issue. The history of major earthquakes helps in the understanding of the performance of bridges during earthquakes. Many parameters affect the response of skewed highway bridges under both service and seismic loads which makes their behavior complex. However, under certain conditions, it may be necessary to analyze a structure to more accurately predict its structural behavior. The current procedure of …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 9, Issue 2, 2023 · pp. 17–23 Read article
-
Dynamic Game Based CAPTCHA-A New Approach to Tackle Web Robots
Abstract: Abstract: "CAPTCHA" stands for Complete Automated Public Turning Test [1], is a security mechanism designed to differentiate between online bots and human. It is a challenged- response test for computing to determine whether the user is human or not. It is used to defend against the malicious bots programs. As use of Internet has been become vital issue and many web application facing a threat of web bots (Robots). Web …
Published in International Journal of Distributed Computing and Technology · Vol. 5, Issue 2, 2019 · pp. 1–7 Read article
-
Transformer-Less Dynamic Voltage Restorer Employing an Asymmetrical Seven-Level Inverter with Reduced Number of Switches for Improving Power Quality
Abstract: In modern power system, power quality is one of the major concerns. It has become important, especially with the introduction of smart grid, grid-connected renewable energy systems and sophisticated devices, whose performance is very sensitive to the quality of power supply that results in a failure of end-use equipment. One of the major power quality disturbance dealt here is the voltage sag. To solve this problem, custom power devices are …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 4, Issue 1, 2018 · pp. 31–38 Read article
-
Study of Dynamic Mechanical and Thermal Properties of Poly(Ether Ether Ketone) Carbon Nanotubes
Abstract: The effect of polyetherimide (PEI) as a compatibilizing agent on the morphology, thermal, electrical and dynamic-mechanical properties of poly(ether ether ketone) (PEEK)/single-walled carbon nanotube (SWCNT) nanocomposites, has been investigated for different CNT loadings. After a pre-processing step based on ball milling and premixing under mechanical treatments in ethanol, the samples were prepared by melt extrusion. A more homogeneous distribution of the CNTs throughout the matrix is found for composites containing …
Published in International Journal of Polymer Science and Engineering · Vol. 3, Issue 1, 2017 · pp. 1–21 Read article
-
Advancements in Computational Methods for Solving Structural Dynamics Problems
Abstract: Significant difficulties come with structural dynamics problems in a variety of engineering fields, such as mechanical, aerospace, and civil. The need for dependable, precise, and economical computational techniques to handle these problems has fueled ongoing progress in the area. This paper highlights the benefits, drawbacks, and uses of recent improvements in computational techniques for tackling structural dynamics issues. We talk about meshless methods, finite element methods (FEM), boundary element methods …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 9, Issue 2, 2023 · pp. 15–19 Read article
-
Dynamic Matrix Control Versus Nonlinear ModelPredictive Control for the Van de Vusse ContinuousStirred-Tank Reactor: Diagnosing and Correcting aCost-Function Pathology That Masked NMPC’sTrue Performance
Abstract: The Van de Vusse reaction in a continuous stirred-tank reactor (CSTR) is a benchmark for nonlinear multivariable control, but its narrow operating envelope creates a trap for nonlinear model predictive control (NMPC): when the setpoint step is small relative to the plant’s reachable range, a standard quadratic NMPC cost function can make zero control action mathematically optimal, even with a perfect prediction model. This paper documents that failure mode, traces …
Published in International Journal of Chemical Separation Technology · Vol. 12, Issue 2, 2026 · pp. 55–66 Read article
-
Analysis of Optimal Clearance Volume Between Two Concentric Cylinders in a Couette Flow Membrane Module Using a Computational Fluid Dynamics Approach
Abstract: Membrane-based separation has become an integral part of the separation industry due to its diverse applications across various fields. However, this progress is often hindered by two major challenges: fouling and concentration polarization. Many membrane modules have made significant efforts to overcome these obstacles, yet a satisfactory solution to mitigate these issues and facilitate membrane-based processes in the separation industries is still needed. These issues are successfully handled using Dynamic …
Published in International Journal of Environmental Chemistry · Vol. 11, Issue 1, 2025 · pp. 135–143 Read article
-
Novel method for determination of kinetic constants from dynamics in a batch reactor with constant heat input rate
Abstract: In this article a novel method of obtaining reaction kinetic constants is described. It consists of measuring both concentration and temperature dynamics in a batch reactor supplied with a constant heat input rate. A system of esterification reaction between acetic acid and methanol in the presence of a cationic resin catalyst is studied. This reversible reaction’s rate is modeled by molecular order and as pseudo homogeneous assumption. By just one …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 5, Issue 1, 2019 · pp. 19–23 Read article
-
Dynamic system identification for looper tension control Using BPNN & Kalman Filtering
Abstract: System identification is an important area in control system. This paper discuss some of the reasons that causes the slow convergence of Back Propagation Neural Network (BPNN). This paper also comment on the effect of the number of neurons in the hidden layer when apply BPNN with Kalman Filtering to dynamic system identification for a looper tension control. BPNN is based on LMS, and uses steepest descent method to find …
Published in International Journal of Electrical Power System and Technology · Vol. 1, Issue 1, 2015 · pp. 38–43 Read article
-
Superconducting Magnetic Energy Storage Based Dynamic Voltage Restorer for Grid-Connected Hybrid PV-Wind Power System Modeling and Simulation
Abstract: The DVR-connected series will use three injections in a single application or three injections in three following converters to inject three compensating compressors in the main supply. The injection transformer raises the released VSI's output voltage to the required level. The converter also isolates the DVR circuit from either the transmission network. The voltage source inverter's (VSI) output power and the quality of the filter used to connect the injection …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 8, Issue 2, 2022 · pp. 35–42 Read article
-
Conceptual design of eVTOL A Nonlinear Dynamic Model of an eVTOL on Simulink-MATLAB
Abstract: eVTOL (electric vertical take-off and landing) for urban mobility is currently evolving and manyconcepts of configurations with which vertical take-off and landing could be made possible arediscussed like a multi-copter, lift and cruise, and tilt-wing. All these concepts have different behaviorfrom the flight dynamics perspective. The one which is predominantly discussed here is the proposedmodel Cityhawk by Urban Aeronautics with a ducted fan vane control system. Urban Aeronautics hasvery high …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 7, Issue 2, 2021 · pp. 18–28 Read article
-
Dynamics Behaviour of Clamped-Clamped Non-Uniform Elastic Beam on Two Parameters Foundation Under Concentrated Moving Load
Abstract: This paper presents a computational study on the dynamic response of a clamped–clamped non-uniform elastic beam supported by a two-parameter foundation and subjected to a concentrated moving load. The analysis incorporates the inertial contribution of the moving load. Unlike uniform models, both the mass per unit length and the moment of inertia of the beam are assumed to vary along the span LLL. The governing equations are solved using the …
Published in International Journal of Mechanics and Design · Vol. 11, Issue 2, 2025 · pp. 1–18 Read article
-
Structure and dynamics of carbon dangling bonds in activated carbon materials from biomass†
Abstract: Activated carbon materials are inevitable for energy-related applications. Production of such materials from biomass is sustainable. Microporous activated carbon materials with high specific surface area and pore sizes of less than 2 nm find life-saving applications apart from their utility in environmental remediation. The free electron density of these materials is tunable and is a measure of electrical conductivity that is useful for the development of green and renewable energy …
Published in International Journal of Green Chemistry · Vol. 11, Issue 1, 2025 · pp. 18–27 Read article
-
Structure and dynamics of carbon dangling bonds in activated carbon materials from biomass
Abstract: Active carbon materials are inevitable for energy-related applications. Production of such materials from biomass is sustainable. Microporous activated carbon materials with high specific surface area and pore sizes of less than 2 nm find life-saving applications apart from their utility in environmental remediation. The free electron density of these materials is tunable and is a measure of the electrical conductivity useful for the development of green and renewable energy sources. …
Published in International Journal of Green Chemistry · Vol. 11, Issue 1, 2025 · pp. 18–27 Read article
-
The COVID-19 Pandemic and Changes in Urban Dynamics: Planning for Future Urban Resilience for Healthier and Safer Life
Abstract: The novel coronavirus (SARS-COV-2) has spread in cities and communities around the world and the story of COVID-19 pandemic in many global cities has so far been very different. Cities and urban areas are on the frontline of the unfolding COVID-19 pandemic across the world. Historically pandemics and diseases shape cities and urban forms. Emerging from Hubei Province in the city of Wuhan-China, the COVID-19 disease has affected not only …
Published in International Journal of Town Planning and Management · Vol. 6, Issue 2, 2020 · pp. 16–28 Read article
-
Residue Management and Preceding Winter Crops on Root Characteristics, Weed Dynamics, Productivity, Nutrient Uptake and Profitability of Green Gram under Zero–till Semi-arid Condition
Abstract: Field experiments under zero-till rainfed conditions were conducted during 2010–11 and 2011–12 at New Delhi for evaluating the agronomic performance and economics of green gram influenced by residue management practices, viz. no-residue, crop residues and Leucaena twigs applied to three preceding winter-season crops, such as wheat, chickpea and mustard. All crops were grown under zero-tillage following recommended practices under rainfed conditions. Green gram showed higher root length density (RLD), root …
Published in International Journal of Plant Biotechnology · Vol. 5, Issue 1, 2019 · pp. 18–28 Read article
-
Seismic Behavior of Soft Storey Building with Static and Dynamic Earthquake Loading
Abstract: Soft first storey is a typical feature in the modern multi-storey constructions in urban India. Though multi-storied buildings with soft storey floor are inherently vulnerable to collapse due to earthquake, their construction is still widespread in the developing like India. Functional and Social need to provide car parking space at ground level and for offices open stories at different level of structure far out-weighs the warning against such buildings from …
Published in International Journal of Structural Engineering and Analysis · Vol. 2, Issue 2, 2016 · pp. 1–7 Read article
-
Effect of Shear Wall on Seismic Performance of High Rise Building Adopting Linear Dynamic Analysis
Abstract: Earlier, the buildings were designed for only dead loads not for the seismic loads. But, as the populations go on increasing and there is limited space available for living. So now a day we raise the height of the structures, as height is increases different parameters affects the structure like seismic loads and wind loads. Seismic force is a lateral horizontal force acting on throughout the height of the building. …
Published in International Journal of Structural Engineering and Analysis · Vol. 6, Issue 1, 2020 · pp. 15–28 Read article
-
Experimental and Numerical Study of Smoke Flow Dynamics in a Scaled down Model of an Underground Car Parking Area by Using Jet Fan Ventilation System
Abstract: An underground car parking area is a feature of most residential complexes, malls, and even offices. It is a principle design for most buildings. The aim of this study is to understand the smoke low dynamics with impulse jet fans in an underground car park. An underground car park requires a ventilation system that takes into account the importance of air circulation which demands the removal of harmful pollutants from …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 9, Issue 1, 2023 · pp. 19–34 Read article