Name of the College : Dr. Navalar Nedunchezhiyan College of engineering
University : Anna University Chennai
Subject Code/Name : ME1401-Finite Element Analysis
Dept : Mechanical Engineering
Degree : B.E
Sem: VII
Website : drnnce.ac.in
Document Type : Question Bank
Download Model Question Paper : https://www.pdfquestion.in/uploads/drnnce.ac.in/3204-VII%20SEM%20QB%202013-2014.pdf
DRNNCE Finite Element Analysis Question Bank
INTRODUCTION :
UNIT I
PART-B :(2 MARKS)
21. Give examples for the finite element.
Related : Dr. Navalar Nedunchezhiyan College of engineering EE1004 Power System Transients B.E Question Bank : www.pdfquestion.in/3210.html
1. One dimensional elements: (a) Truss elements.
(b) Bar, Beam elements.
2. Two dimensional elements: (a) Triangular elements.
(b) Rectangular elements.
3. Three dimensional elements: (a) tetrahedral elements.
(b) Hexahedral elements.
UNIT II
ACTUATION SYSTEMS 9
Mechanical actuation systems – Cams – Gear trains – Ratchet and pawl – Belt and chain drives –
Bearings – Electrical actuation systems – Mechanical switches – Solid state Switches – Solenoids – D.C Motors – A.C Motors – Stepper motors.
UNIT III
SYSTEM MODELS AND CONTROLLERS 9
Building blocks of Mechanical, Electrical, Fluid and Thermal Systems – Rotational systems –
Transnational systems – Electromechanical systems – Hydraulic system– Mechanical systems.
Continuous and discrete process controllers – Control mode – Two-Step mode – Proportional
mode – Derivative mode – Integral mode – PID controllers – Digital controllers – Velocity
control – Adaptive control – Digital logic control – Micro processors control.
UNIT IV
PROGRAMMING LOGIC CONTROLLERS 9
Programmable logic controllers – Basic structure – Input / Output processing – Programming –
Mnemonics – Timers, internal relays and counters – Shift registers – Master and jump controls – Data handling – Analogs Input / Output – Selection of a PLC problem.
UNIT V
DESIGN OF MECHATRONICS SYSTEM 9
Stages in designing mechatronics systems – Traditional and mechatronic design – Possible design
solutions – Case studies of mechatronics systems – Pick and place robot – Automatic car park
systems – Engine management systems.
22. What is meant by node or joint?
Each kind of finite element has a specific structural shape and is interconnected with the adjacent elements by nodal points or nodes. At the nodes, degrees of freedom are located. The forces will act only at nodes and not at any other place in the element.
23. What is the basis of finite element method? (AU DEC 2009)
Discretization is the basis of finite element method. The art of subdividing a structure, into a convenient number of smaller components is known as discretization.
24. What are the types of boundary conditions?
There are two types of boundary conditions. They are:
l. Primary boundary condition.
2. Secondary boundary condition.
25. State the three phases of finite element method.
The three phases are:
l. Preprocessing. .
2. Analysis.
3. Post processing.
26. What are structural and non-structural problems?
Structural problems: In structural problems, displacement at each nodal point is obtained. By using these displacement solutions, stress and strain in each element can becalculated. Non-structural problems: In non-structural problems, temperatures or fluid pressure at each nodal point is obtained. By using these values, properties such as heat flow, fluid flow, etc., for each element can be calculated.
27. What are the methods are generally associated with the finite element analysis? (AU MAY 2008)
The following two methods are generally associated with the finite element analysis. They are
(i) Force method.
(ii) Displacement or stiffness method.
28. What is meant by post processing?
Analysis and evaluation’ of the solution results is referred to as Processor computer programs help the user to interpret the results by displaying them in Graphical form.
29. Name the weighted residual methods.
l. Point collocation method. 2. Sub domain collocation method.
3. Least squares method. 4. Galerkin’s method.
30. What is Rayleigh-Ritz method? (AU MAY 2007)
Rayleigh-Ritz method is a integral approach method which is useful for solving complex Structural problems encountered infinite element analysis. This method is possible only if a suitable functional is available.