Dr. M. V. REDDY
Name : Dr. M. Venkatarama Reddy
Designation
: Professor of
Mechanical Engineering
Qualification: Ph.D.
(Engg)
Ph.D.
Research Topic (2003):
"Expert System
for the Analysis of Fatigue-Fracture Problems Related to Steel Structures"
Synopsis:
The advances in modern technology demands more sophisticated
methodology for the validation of structural integrity of engineering
components and structures during service conditions. The pre-requisites for
assessing structural component behavior is a
knowledge of mechanical in particular fatigue-fracture behavior of
materials. This helps in forecasting its useful life and to develop inspection
and service procedures.
This thesis makes an attempt to provide the necessary
background details of fracture mechanics and fracture parameters needed in
Damage Tolerant Design (DTD). The two broad approaches, Linear Elastic Fracture
Mechanics (LEFM) and Elastic-Plastic Fracture Mechanics (EPFM) adapted in
fracture analysis are discussed at length. Different methods of evaluating
fracture parameters with their relative merits and demerits are presented
through some illustrative examples.
The thesis further brings out the potentials of Artificial
Intelligence (AI) and Expert Systems (ES) and their applications in engineering
with special relevance to design and manufacturing. The applications of ES for
the study of fracture problems are also dealt with.
The major contribution of the thesis is the development of
four ESs useful to the designer in Damage Tolerant Design. The different expert
systems developed are as follows:
1)
Expert system
for information retrieval on fracture mechanics and fracture parameters
relevant to DTD;
2)
Expert system
for the design against fracture of high and low strength materials;
3)
Expert system
for retrieval of Stress Intensity Factor (SIF) for linear elastic fracture
analysis of brittle materials and
4)
Expert system
for retrieval of J-Integrals for the elastic-plastic fracture analysis of
ductile materials.
The first ES provides information on important definitions,
classifications and fracture parameters associated with fracture mechanics,
modes of fracture, Westergaard’s stress and displacement field equations,
material property database, standard crack configurations database, rule base,
etc. In essential it provides the basic knowledge and guidelines relevant to
fracture mechanics to the designer for the use of other three ESs. The second
ES helps the designer to classify the given material (from which the structure
is built) into high and low strength material, then the appropriate fracture
mechanics approach to be used, and, further the validation of the safety of the
design. The third ES provides the much needed information of SIFs required in
the LEFM analysis of brittle fractures. Several commonly encountered
configurations are included in the database for a variety of loading and
boundary conditions. The information of
J-Integrals for limited number of crack configurations is provided by the
fourth and last ES.
The ESs are developed using programming language C++ in
Turbo C environment. Its graphic capabilities are utilized in developing an
efficient user-system interface. The ESs developed were validated by comparing
their values with the ones obtained using FEM approaches for some selected
crack configurations.
Education:
1.
Ph.D. in Engineering [Research Topic: “Expert System for the
Analysis of Fatigue- Fracture Problems related to Steel Structures”] from
2.
M.E (Machine design) from
3.
B.E. (Production) from
Professional
Experience:
1.
Professor in Mechanical Engineering, Bangalore Institute of
Technology,
2.
Assistant professor in Mechanical Engineering, Bangalore
Institute of Technology,
3.
Lecturer in Mechanical Engineering from 1983 to 1986 in
4.
Lecturer in Mechanical Engineering from 1982 to 1983 in
R.V.College of Engineering,
5.
Lecturer in Mechanical Engineering from 1980 to 1982 in
Fields
of Research:
1.
Solid Mechanics, Finite Element Analysis
2.
Expert Systems
3.
Linear Elastic Fracture Mechanics
4.
Elasto-Plastic Fracture Mechanics
Publications:
1.
K.S. Shivakumar
Aradhya, M. Venkata Rama Reddy, N.
Govindaraju, "Development of an Expert system for the Evaluation of Stress
Intensity Factor", 47th conference of the Indian Society of Theoretical
and Applied Mechanics, IIT Guwahati, India, December 20-23, 2001.
2.
M. Venkata Rama Reddy,
K.S. Shivakumar Aradhya, N. Govindareju, "Development of an Expert system
for the Evaluation of Stress Intensity Factor", 47th conference of the Indian
Society of Theoretical and Applied Mechanics, IIT Guwaahati, India , December
20-23, 2001.
3.
M. Venkata Rama Reddy,
K.S. Shivakumar Aradhya, N. Govindaraju. "Development of Expert System for
the Evaluation of J- Integral for Facture Analysis, "National Conference
on Advance Trends in Mechanical Engineering Research and Development ( MINAC -
2002), JNTU, Ananthapur, Andra Pradesh, Dec. 21-22, 2002.
4.
M. Venkata Rama Reddy,
K.S. Shivakumar Aradhya, N. Govindareju, "Comparative study of Theoretical
and FEM values of J- Integral for Facture Analysis", National Conference
on Advance Trends in Mechanical Engineering Research and Development ( MINAC -
2002) JNTU, Ananthapur, Andra Pradesh, Dec. 21-22, 2002.
5.
Venkata Rama Reddy, M.,
Shivakumar Aradhya, K.S. and Govindaraju, N., 2003, “Development of an Expert
System -- A case study for the Evaluation of J-Integrals for the Analysis of
Thin Cylindrical Shells Subjected to Internal Fluid Pressure”, Proc., National
Conference on Emerging Trends in
Engineering, Technology and Management” Adhiyamaan Engineering College, Hosur, Tamilnadu, India.
6.
Venkata Rama Reddy. M.,
Vijayashimha Reddy, B.G., Pradeep, M., Kumar, K. and Govindaraju, N., 2003, “Study of Fracture
Parameters of a Pressure Vessel Subjected to Internal Pressure” Proc., National
Conference on Emerging Trends in Engineering, Technology and Management,
Adhiyamaan Engineering College, Hosur,
Tamil Nadu, India.
1.
Venkata Rama Reddy. M.,
Seenappa., Pradeep, M., Kumar, K. and
Govindaraju, N., 2003, “Retrieval of J- Integrals for Inclined
Crack, Sub-Surface Crack, Center Through Crack by using Finite Element
Analysis” Proc., National Conference on Emerging Trends in Engineering ,
Technology and Management”, Adhiyamaan
Engineering College, Hosur, Tamil Nadu, India.
2.
Venkata Rama Reddy. M., Pradeep, M.,
Naveen Babu Chandhu., Rajan Bharadwaj., Kumar, K. and Ramachandra, K.,
2003, “Influence of Taper, Twist and
Thickness in Rotor Blades by using Finite Element Analysis”, Proc., National
Conference on Emerging Trends in Engineering , Technology and Management,
Adhiyamaan Engineering College, Hosur,
Tamil Nadu, India.
3.
Venkata Rama Reddy. M.,
Jnanasheker,
K., Manjunatha Shreyas., Kumar, K. and Govindaraju, N., 2003, “Fillet
Optimization of a Stepped Shaft subjected Bending and Axial Loads”, Proc.,
National Conference on Emerging Trends in Engineering, Technology and
Management”
4.
Venkata Rama Reddy. M., Rajan Bharadwaj.,
Naveen Babu Chandhu., Pradeep, M.,
Kumar, K. and Govindaraju, N., 2003, “Study of Vibration Characteristics
of 3 Rotor System FEM results Comparing
it with Holzer and Stodola
Method”, Proc., National Conference on Emerging Trends in Engineering, Technology and Management, Adhiyamaan Engineering College, Hosur, Tamil Nadu, India.
Contact Details:
Professor of Mechanical of Engineering
Department
Home:
# 109, 12th
cross end, near
Narayanapura ward,
Wilson garden,
E-Mail: drmvr_bit@yahoo.co.in
Phone :
080-22249763(R); 080-26613237(O)
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