Mechanical Engineering
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Life estimation of gear transmission unit in a turbine generator set due to short circuits
(1992)This paper is concerned with the dynamic analysis of a gear transmission system in a turbo generator set and life estimation of the gears due to short circuits in the generator. The dynamic analysis of a turbo generator ... -
A nonlinear goal programming model for multistage, multiobjective decision problems with application to grouping and loading problem in a flexible manufacturing system
(1991)A multistage multiobjective decision problem is formulated as a nonlinear goal programming model. The solution algorithm which uses Box-Complex method is presented. The model formation and computational aspects are illustrated ... -
Elastic distortion of a large thrust pad on an elastic support
(1991)The performance of large thrust bearings depends on the film profile and the thrust pad distortion. A mathematical model to estimate elastic distortion of a thrust pad on an elastic support by solving Reynolds' and elasticity ... -
Equations of motion of a blade rotating with variable angular velocity
(1992)The equations of motion of a blade mounted on a disk rotating with variable angular velocity are derived. The acceleration of the disk is taken as constant and the calculus of variations is employed to obtain the equation ... -
Computer-aided optimum selection of roller bearings
(1993)The paper presents a methodology for evaluating roller bearings in terms of their suitability for a given application. The method is based on a multiple-attribute decision-making approach called (Technique for Order ... -
Transport properties of R22-DMF mixtures
(1993)Transport properties of R22-DMF mixtures were estimated over a wide range of temperatures and compositions. Density, viscosity, thermal conductivity, specific heat, surface tension and thermal diffusivity are among the ... -
Combustion and gasification characteristics of rice husk
(1992)Rice husk when used in gasifiers and boilers yields carbonaceous residue. Combustion and gasification studies of rice husk were carried out to understand the problem of incomplete carbon conversion. Thermogravimetric ... -
Stability of rotor systems with viscoelastic supports
(1992)Stability analysis of a rotor system with the rotor disk placed in the middle of a massless shaft, having linear elasticity and internal damping, with linear elastic bearings at the ends and supported on viscoelastic ... -
Effects of MIG process parameters on the geometry of the bead in the automatic surfacing of stainless steel
(1994)Automatic weld surfacing is being employed increasingly in the process and power industries. Because of its high reliability, all-position capability, ease of use, low cost and high productivity, GMAW has become a natural ... -
A simulation study of unit exchange spares management of diesel locomotives in the Indian railways
(1994)This paper focuses on modelling and analysis of a repair inventory system of diesel locomotives in the Indian Railways (IR) based on the concept of unit exchange spares (UES). At present, the LIES management problem has ... -
Shock in rotor blades during speed changes
(1994)The influence of changes in rotational speed on the dynamics of rotating blades is investigated. The governing non-linear integro-partial differential equations, for uniform rates of acceleration, derived in an earlier ... -
Free damped flexural vibration analysis of composite cylindrical tubes using beam and shell theories
(1994)An investigation is described of the free vibration characteristics, i.e., natural frequencies and damping ratios in flexural modes of cylindrical tubes made from fibre reinforced materials with potential usage as composite ... -
Damped free vibrations of layered composite cylindrical shells
(1994)System loss factors corresponding to various shell modes have been evaluated by using a complex modulus approach. The damped free vibrations of composite cylindrical shells have been analyzed by using a first order shear ... -
Evaluation of liquid dessicant based evaporative cooling cycles for typical hot and humid climates
(1994)This communication presents an evaluation of various liquid dessicant cycles for air conditioning in hot and humid climates. Psychometric evaluation of seven potential cycles for achieving standard comfort conditions ... -
Delamination propagation in rotating carbon-epoxy composite shaft
(1994)A carbon-epoxy shaft is fabricated by a filament winding technique. Delaminations are introduced during fabrication. A simple experimental setup for rotation of a composite shaft is designed and fabricated. The composite ... -
Multi-attribute decision model using the analytic hierarchy process for the justification of manufacturing systems
(1992)There is a general challenge offered to the field of engineering economics by the introduction of advanced technologies. A survey of the existing literature on evaluation of advanced manufacturing systems indicate that the ... -
Structural dynamic modification with damped beam elements
(1993)An algorithm to improve the dynamic behaviour of a structure by local damped beam modifications is presented. A modification dynamic stiffness matrix (DSM) has been constructed for the added beam which is integrated with ... -
Workspace and dexterity analyses of hexaslide machine tools
(2003)This paper presents kinematic analysis of a class of parallel manipulators, namely, Hexaslides, for machine tool applications. Hexaslides have constant-length legs. The inverse and direct kinematics solutions, to study the ... -
Robot selection using DeNOC-based dynamics
(2003)Robot selection for an application is generally done based on experience, intuition and at most using the kinematic considerations like workspace, manipulability, etc. Dynamics is ignored at this stage even though it is ... -
Flexibility in technology forecasting, planning, and implementation: a two phase idea management study
(1999)In this paper, modified idea writing has been used to conceptualize and generate ideas regarding flexibility planning and implementation in the Indian engineering industry. Idea writing is a group process which focuses on ... -
A decomposition of the manipulator inertia matrix
(1997)A decomposition of the manipulator inertia matrix is essential, for example, in forward dynamics, where the joint accelerations are solved from the dynamical equations of motion. To do this, unlike a numerical algorithm, ... -
Ant colony optimization algorithm to the inter-cell layout problem in cellular manufacturing
(2004)The inter-cell layout problem is discussed and a mathematical formulation for material flow between the cells is presented. The problem is modeled as a quadratic assignment problem (QAP). An ant algorithm is developed to ... -
Studies in dynamic design using updated models
(2005)Model updating techniques are used to update a finite element model of a structure so that an updated model predicts more accurately the dynamics of a structure. The application of such an updated model in dynamic design ... -
A probabilistic approach to predict surface roughness in ceramic grinding
(2005)The quality of the surface produced during ceramic grinding is important as it influences the performance of the finished part to great extent. Hence, the estimation of surface roughness can cater to the requirements of ... -
Modelling of tooth trajectory and process geometry in peripheral milling of curved surfaces
(2005)The paper presents modelling of tooth trajectory and process geometry in peripheral milling of curved surfaces. The paper differs from previous work in this area, in two respects. Firstly it deals with milling of variable ... -
Studies in dynamic design of drilling machine using updated finite element models
(2004)The aim of the present work is to develop updated FE models of a drilling machine using analytical and experimental results. These updated FE models have been used to predict the effect of structural dynamic modifications ... -
Attribute based specification, comparison and selection of a robot
(2004)The problem of robot selection has been of concern to manufacturers for many years. This problem has become more difficult in recent years due to increasing complexity, available features, and facilities offered by different ... -
Design of a robust self-excited biped walking mechanism
(2004)A self-excited biped walking mechanism consisting of two legs that are connected in a series at the hip joint through a servomotor is studied to determine range of stability. A torque proportional to angle between the shank ... -
The effect of stacking sequence and coupling mechanisms on the natural frequencies of composite shafts
(2005)In this paper the natural frequencies of composite tubular shafts have been analysed. Equivalent modulus beam theory (EMBT) with shear deformation, rotary inertia and gyroscopic effects has been modified and used for the ...
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