Souvenir Containing Abstracts - YMCA University of Science ...

National Conference on Trends and Advances in Mechanical Engineering
THEME-II
DESIGN & ANALYSIS
TAME-2012
OCT 19-20, 2012
PATH SYNTHESIS OF 4-BAR LINKAGES WITH JOINT CLEARANCES USING DE
ALGORITHM
1 2 2
Ruby Mishra , T.K.Naskar and Sanjib Acharya
1
School of Mechanical Engineering, KIIT University, BBSR- 751 024, India
2
Mechanical Engineering Departments, Jadavpur University, Kolkata-700032, India
This paper presents synthesis of linkages with joint clearances to generate a desired coupler curve. Link lengths are
determined with an objective of minimizing error between desired curve and generated curve. Joint Clearances are treated as
a virtual link. Differential evaluation (DE) algorithm is used to find link parameters for minimizing error between desired
and actual path due to clearances at joints connecting coupler and follower.
Key words: Linkage synthesis, Joint clearance, Differential evaluation
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STOCHASTIC THERMAL BUCKLING RESPONSE OF LAMINATED COMPOSITE
PLATE RESTING ON ELASTIC FOUNDATION BASED ON MICROMECHANICAL
MODEL
1 2 3
Rajiv Kumar , Amit Sharma and Rajesh Kumar
1
M.Tech , Deptt. of Mech. Engg., DCRUST, Murthal , Haryana, India, rajiv.kumar13@gmail.com
2
Asstt. Professor, Deptt. of Mech. Engg. DCRUST, Murthal, India, , mech_amit_sharma@yahoo.co.in
3
Professor, Deptt. of Mech. Engg., DCRUST, Murthal, Haryana, India , rajeshtripathi63@gmail.com
The present work investigates the thermally induced buckling response of elastically supported laminated composite plates
with random system properties using stochastic finite element method. The properties such as material properties, thermal
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expansion coefficients and lamina thickness are modeled as basic random variables. A C nonlinear finite element method
based on the higher order shear deformation plate theory using von Karman-type nonlinear strain displacement relations is
used to discretize the laminate. A direct iterative method in conjunction with first order perturbation technique (FOPT) is
outlined to solve the stochastic nonlinear generalized eigenvalue problems in thermal sense. Typical numerical results for
second order statistics of thermal nonlinear buckling load of laminated composite plates are obtained for different support
conditions, and temperature change. The numerical results for mean response are compared with the results available in the
literature and for second order statistics with an independent Monte Carlo simulation.
Keywords: Thermal Buckling, stochastic finite element, perturbation technique, boundary support.
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AN INTRODUCTION TO STRUCTURAL HEALTH MONITORING: A SMART
SOLUTION
1 2 3
Vikash Kumar , Dr. Sanjeev Kumar and Dr. Vikram Singh
1
PhD Research Scholar, Deptt of Mech. Engg., YMCA University of Science & Technology, Faridabad
2,3
Associate Professor, Deptt of Mech. Engg, YMCA University of Science & Technology, Faridabad
Structural health monitoring is an important safety factor in aviation that might benefit from advanced smart systems for
damage sensing and signal processing. Current levels of structural safety and reliability do not present a particularly strong
case for smart systems but cost considerations related to inspection and maintenance do. As an added benefit problems of
poor accessibility and negative effects of human factors in inspection might be reduced. The implementation of such system
requires development and demonstration by dedicated and qualified multidisciplinary teams, acceptance by aircraft
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Department of Mechanical Engineering, YMCA University of Science and Technology, Faridabad