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N. Ganesan - One of the best experts on this subject based on the ideXlab platform.

  • Technical Note: Static Stress Analysis of a composite bevel gear using a three-dimensional finite element method
    Computers & Structures, 2005
    Co-Authors: S. Vijayarangan, N. Ganesan
    Abstract:

    The possibility of using composite materials for power transmission spur gear, from a Static strength point of view, have been proved by the authors in their previous study. In this present work an attempt has been made to study the behaviour of composite bevel gear from a Static load point of view using a three-dimensional finite element method. The performance of two composite material bevel gears are presented and compared with a carbon steel gear. From a Static strength point of view a glass epoxy bevel gear is slightly closer to a carbon steel bevel gear than a boron/epoxy bevel gear; but from a displacement point of view glass/epoxy deviates from that of carbon steel much more than boron/epoxy, unlike the case of a composite spur gear, where boron/epoxy was better both from strength and displacement points of view. Hence from the results it is concluded that composite materials such as boron/epoxy can be very much thought of as a material for power transmission bevel gears.

  • Static Stress Analysis of composite spur gears using 3D-finite element and cyclic symmetric approach
    Composite Structures, 2003
    Co-Authors: S.mohamed Nabi, N. Ganesan
    Abstract:

    Abstract It is more realistic to include the effect of adjacent teeth stiffness while evaluating the root Stresses of a gear which is a rotationally periodic structure. This requires very large core and computational time. In the present Analysis an attempt has been made to compare the root Stresses with and without considering the effects of adjacent gear teeth stiffnesses using the concept of cyclic symmetry. Further, an attempt has been made to study the performance of a composite spur gear using the above approach. It is found that the root structure predicted by the method of cyclic symmetry is less for both isotropic and orthotropic spur gears.

  • Stress Analysis of composite spur gear using the finite element approach
    Computers & Structures, 1993
    Co-Authors: S. Vijayarangan, N. Ganesan
    Abstract:

    Abstract Engineering components made of composite materials find increasing applications ranging from spacecraft to small instruments. Many types of gear pump use composite gears, however little literature is available on their use. In this paper results obtained by Static Stress Analysis of composite gears using a three-dimensional finite element approach are presented. Performance of two orthotropic material gears are presented and compared with mild steel gear. From the results it is concluded that composite material such as graphite/epoxy can be thought of as a material for power transmission gears.

Liu De-quan - One of the best experts on this subject based on the ideXlab platform.

  • Structural Analysis of HL-2M vacuum vessel under major plasma disruption
    Nuclear Fusion and Plasma Physics, 2011
    Co-Authors: Liu De-quan
    Abstract:

    The eddy currents and electromagnetic forces on the HL-2M vacuum vessel during major plasma disruption were calculated by using ANSYS finite element software,and a subsequent Static Stress Analysis was carried out based on the electromagnetic forces.The results showed that the toroidal eddy currents and radial electromagnetic forces were discovered on the vacuum vessel and mainly concentrated on the straight section of the vessel shells and the vacuum vessel is strong enough to bear the electromagnetic loads.

  • Numerical simulation of Static Stress for ITER gravity support
    Nuclear Fusion and Plasma Physics, 2008
    Co-Authors: Liu De-quan
    Abstract:

    The Static Stress Analysis of ITER magnet gravity support has been performed with ANSYS,and the variation of Stress is simulated under various load cases.The calculation results reveal that the Stress is lower than the allowable limits of the component materials,and therefore the gravity support,especially the 21-flexible-plate component,have enough mechanical strength and can safely withstand the various operation scenarios.

H V Divya - One of the best experts on this subject based on the ideXlab platform.

  • Finite Element Modeling For The Stress, Buckling And Modal Analysis Of A Cylindrical Pressure Vessel With Torispherical Enclosure
    International journal of engineering research and technology, 2013
    Co-Authors: Jeevan. T. P, H V Divya
    Abstract:

    Abstract: Pressure vessels are being widely employed worldwide as means to carry, store or receive fluids. The pressure differential is dangerous and many fatal accidents have occurred in the history of their development and operation. Effect of cylindrical pressure vessel with torispherical enclosure on the Stress, buckling and vibrational characteristics subjected to an internal pressure is investigated by Finite Element Method (FEM). The two dimensional Static Stress Analysis is performed for different vessel thickness to analyze the Stresses and deflections in the vessel walls due to the internal pressure. Eigenvalue buckling Analysis was performed for different vessel thickness and different knuckle radius to determine critical buckling pressure and modal Analysis is performed to determine the vibration characteristics (natural frequencies and mode shapes) of a vessel. Finite Element Analysis was performed using software programme ANSYS. Based on the results obtained from Static Stress Analysis, it is found that thickness of the vessel plays an important role in withstanding the applied internal pressure. Influence of thickness and knuckle radius of the vessel on buckling pressure are studied. Comparing the rate of increase in buckling pressure in both cases, the variation of buckling pressure is more with the influence of thickness compared to influence of Knuckle radius. Thus the buckling pressure is more sensitive to the thickness of the vessel. The vibrational characteristics like natural frequency and mode shapes are presented. The results of Stress Analysis obtained by Finite Element Method are in good agreement with results obtained by classical approach.

Jeevan. T. P - One of the best experts on this subject based on the ideXlab platform.

  • Finite Element Modeling For The Stress, Buckling And Modal Analysis Of A Cylindrical Pressure Vessel With Torispherical Enclosure
    International journal of engineering research and technology, 2013
    Co-Authors: Jeevan. T. P, H V Divya
    Abstract:

    Abstract: Pressure vessels are being widely employed worldwide as means to carry, store or receive fluids. The pressure differential is dangerous and many fatal accidents have occurred in the history of their development and operation. Effect of cylindrical pressure vessel with torispherical enclosure on the Stress, buckling and vibrational characteristics subjected to an internal pressure is investigated by Finite Element Method (FEM). The two dimensional Static Stress Analysis is performed for different vessel thickness to analyze the Stresses and deflections in the vessel walls due to the internal pressure. Eigenvalue buckling Analysis was performed for different vessel thickness and different knuckle radius to determine critical buckling pressure and modal Analysis is performed to determine the vibration characteristics (natural frequencies and mode shapes) of a vessel. Finite Element Analysis was performed using software programme ANSYS. Based on the results obtained from Static Stress Analysis, it is found that thickness of the vessel plays an important role in withstanding the applied internal pressure. Influence of thickness and knuckle radius of the vessel on buckling pressure are studied. Comparing the rate of increase in buckling pressure in both cases, the variation of buckling pressure is more with the influence of thickness compared to influence of Knuckle radius. Thus the buckling pressure is more sensitive to the thickness of the vessel. The vibrational characteristics like natural frequency and mode shapes are presented. The results of Stress Analysis obtained by Finite Element Method are in good agreement with results obtained by classical approach.

Scott D Snyder - One of the best experts on this subject based on the ideXlab platform.

  • a study of the response of a simply supported beam to excitation by a piezoelectric actuator
    Journal of Intelligent Material Systems and Structures, 1992
    Co-Authors: Colin H Hansen, Scott D Snyder
    Abstract:

    This article presents a dynamic model of the response of a simply sup ported beam to excitation by actuators made using piezoelectric ceramics glued to the beam surface. The dynamic extensional strain on the beam surface is calculated by includ ing the free Stress conditions at the piezoelectric actuator boundaries and by considering the dynamic coupling between the actuator and the structure. The results obtained from this Analysis are compared with those from past studies, which were based on the assump tion of Static coupling between the structure and the actuator. The Analysis shows that the strain field (and so the beam displacement) close to the actuator is significantly different from that obtained by using Static Stress Analysis results, and that to obtain an accurate description of the response, the coupled structural and piezoceramic actuator system must be modelled dynamically.