Institute of Mechanics

Position: Associate Professor

Department: Mechatronics

Room number: 211

Phone: +359 2 979 64 29

E-mail: boicho_marinoff@yahoo.co.uk

boicho_marinoff@abv.bg

Scientific degrees, institution, year:

• 1980-1985: Graduate Technical University of Sofia, Department of Transportation - Dipl. Eng. in Mechanical Engineering.

• 1985-88: Machine designer in The Institute of Plastic- Machining and Energetic Machines.

• 1988-91: Ph.D. student, Technical University of Sofia, Department of Mechanics.

• 1992-95: Machine designer in firm “Megatex”- Sofia.

• 1995: PhD awarded for thesis entitled "Design of Machines with Cardan Transmissions to Reduce Vibration, Noise and Providing the Necessary Reliability”, TU - Sofia.

• 1995 till now: Researcher, Institute of Mechanics, Bulgarian Academy of Sciences.

Fields of Research:

Research to date has been primarily in the field of the vibrations, applied mathematics, engineering design, viz. dynamic modelling of single, double and multi-mass systems, vibration control, and dynamic systems - for which computer solutions has been validated by extensive experimental studies. Modelling includes a computer and analytical modelling of the frequency and dynamic behaviour of single, double and multi-mass dynamic vibration systems. Modelling includes several up to date computer codes, such as MATLAB, SolidWorks and others.

Investigation of the dynamic loads that arise in operating mode in various machines such as internal combustion engines, transportation machines, machines and mechanisms utilising cardan transmissions, woodworking machines and others. Particularly important part of my research activity is aimed to study the vibro-shock processes in certain classes of machines and in particular, a study of vibro-shock processes in vehicles and woodworking machines.

Various optimization tasks are solved, to perform optimal selection of the parameters of the links of different machines and equipment, which allows the system to operate at optimum conditions, away from the resonant modes. Studies are conducted to optimize the process of dynamic and impulse impact on the mechanical systems.

I have experience as a university lecturer.

Monographs:

Marinov B., Shock-Wave Processes on Railway Vehicles-an Optimization, Publisher: VDM Verlag Dr. Müller GmbH & Co. KG, Germany, 2011, (ISBN: 978-3-639-32902-5, ISBN: 3639329023).

Recent Publications:

Marinov B., Al. Kazakoff, P. Raykov, Modelling of Big Engines Dynamic Behaviour for Marine Vessels, Compt. Rend. De l’Acad. Bulgare des Sciences, 2014, (ISSN 1310-1331).

Marinov B., Al. Kazakoff, P. Raykov, Modelling of Big Engines Frequency and Dynamic Behaviour, Proceeding of 12^th National Congress on Theoretical and Applied Mechanics, Saints Constantine and Helena, Varna, 2014.

Marinov B., Full Dynamic Reactions in the Basic Shaft Bearings of Big Band Saw Machines, Journal of Theoretical and Applied Mechanics, Vol.43, №1, 2013, Publisher “Versita”, DOI: 10.2478/jtam-2013-0001, (ISSN 0861-6663).

Kazakoff Al., B. Marinov, Shock-Wave Processes Modelling on Railway Vehicles Using a Scaled Model Utilizing Viscoelastic Properties, Compt. Rend. De l’Acad. Bulgare des Sciences, Vol. 66, No 1, 2013, (ISSN 1310-1331).

Marinov B., Dynamic Reactions in the Basic Shaft Bearings of Band Saw Machines, Mechanics of Machines Magazine, Vol. 100, №1, 2013, (ISSN 0861-9727).

Marinov B., Shock Processes on Railway Vehicles with One-Stage Spring Suspension, Journal of Archives of Transport, Vol. 24, issue 4, 2012, Publisher “Degruyter”, (DOI 10.2478/v10174-012-0029-x), (ISSN 0866-9546).

Marinov B., Dynamic Stresses in Consequence of Impulse Impacts in the Links of Certain Classes Band Saw Machines with a Feeding Mechanism, Mechanics of Machines Magazine, Vol. 96, №1, 2012, (ISSN 0861-9727).

Marinov B., Shock-Wave Processes on Railway Vehicles with Two-Stage Spring Suspension. Free Damped Vibrations in Consequence of the Shock-Wave Processes, Compt. Rend. De l’Acad. Bulgare des Sciences, Vol. 64, No 3, 2011, (ISSN 1310-1331).

Marinov B., Shock-Wave Processes on Railway Vehicles with Two-Stage Spring Suspension. Kinematics Components of the Movement Determination, Compt. Rend. De l’Acad. Bulgare des Sciences, Vol. 64, No 2, 2011, (ISSN 1310-1331).

Marinov B., Impulse Impacts Investigation on Certain Classes Band Saws Machines with a Feeding Mechanism, Mechanics of Machines Magazine, Vol. 93, №2, 2011, (ISSN 0861-9727).

Marinov B., Al. Kazakoff, Computer Modelling on Kinetic Energy Optimization in Some Classes Circular Machines as a Result of the Circular Saws Unbalance, Compt. Rend. De l’Acad. Bulgare des Sciences, Vol. 63, No 5, 2010, (ISSN 1310-1331).

Marinov B., Kinetic Energy Loss in Some Classes Circular Machines as a Result of the Circular Saws Unbalance, Proceedings of 11^th National Congress on Theoretical and Applied Mechanics, 2009, Borovets, (ISSN 1313-9665).

Marinov B., G. Vukov, Maximal Deflections of Circular Shafts Driving Big Circular Saws, Scientific and Information Journal “Woodworking and Furniture Manufacturing”, №1, 2009, (ISSN 1311-4972).

Marinov B., Influence of the Circular Shaft Deformations, Driving Big Circular Saws on Their Work in Operating Mode, Mechanics of Machines Magazine, Vol. 81, №2, 2009, (ISSN 0861-9727).

Marinov B., Deformations of Circular Shafts, Driving Big Circular Saws in Consequence of Dynamic Loads, Mechanics of Machines Magazine, Vol. 74, №2, 2008, (ISSN 0861-9727).

Marinov B., Full Energy Losses in Consequence of Shock Impacts on Two-Stage Spring Suspension Railway Vehicles, National Centre for Information and Documentation - Central Technological Library, Sofia, 2008, (Hd 2/2008, HD II 18730).

Vukov G., B. Marinov, Identification of the Typical Defects of the Driving Mechanism of Carved Veneer Machines Using Vibrodiagnostics, Proceedings Scientific Papers from Scientific-Technical Conference "Innovations in Woodworking Industry and Engineering Design", Yundola, 2008, (ISBN 978-954-323-538-4).

Marinov B., Energy Losses in Consequence of Percussion Actions on the Bogies of Two-Stage Spring Suspension Carriages, Scientific Journal Mechanics Transport Communications, №3, 2007, (ISSN 1312-3823).

Marinov B., Dynamic Reactions in the Bearings of Circular Shafts, Driving Big Circular Saws, Mechanics of Machines Magazine, Vol. 68, №2, 2007, (ISSN 0861-9727).

Marinov B., Optimization of Impact Process Occurring in the Operating Regime for Railway Vehicles with One-Stage Spring Suspensions, Proceedings of XVI International Scientific Conference "Transport 2006", (ISBN-10: 954-12-0130-X, ISBN-13: 978-954-12-0130-5).

Marinov B., Dynamic Stresses Caused by Shocks Processes in the Links of Certain Classes Circular Machine for Longitudinal Cutting, National Centre for Information and Documentation - Central Technological Library, Sofia, 2006, (Hd 1/2006, HD II 18715).

Marinov B., Shock Wave Vibration Processes Investigation on Certain Classes Circular Machines, Proceeding of 10^th Jubilee National Congress on Theoretical and Applied Mechanics, Saints Constantine and Helena, Varna, 2005, (ISBN-10: 954-322-123-5, ISBN-13: 978-954-322-123-3)

Marinov B., Impulse Impacts Optimization on Two-Stage Spring Suspension Railway Vehicles, Journal of Archives of Transport, Vol. 17, issue 2, 2005, Publisher “Degruyter”, (ISSN 0866-9546).

Marinov B., On the Behaviour of Power Transmission Lines in Vehicles Subjected to Complex Loading, Journal of Theoretical and Applied Mechanics, Vol. 34, № 2, 2004, Publisher “Versita”, (ISSN 0861-6663).

Marinov B. G. Voukov, Arising of Impulse Loads in Some Classes Circular Machines, Mechanics of Machines Magazine, Vol. 51, №2, 2004, (ISSN 0861-9727).

Marinov B., Behaviour Investigation of Power Transmission Lines in Vehicles in Case of Simultaneous Action of Torsional and Longitudinal Vibration Excitation, Journal of Theoretical and Applied Mechanics, Vol. 33, № 2, 2003, Publisher “Versita”, (ISSN 0861-6663).

Todorov M., G. Voukov, B. Marinov, Parametric Torsional Oscillations of the Helicopter Transmission, Proceedings of Jubilee Scientific Session "10 Years Department of Air Transport", 2003, Sofia.

Marinov B., Al. Kazakov, Optimization the Process of Impulse Impact on Wagons with One-Stage Spring Suspension, Proceedings of the Tenth International Scientific Conference on “Internal Combustion Engines, Transport Vehicles and Transport MOTAUTO'03”, 2003, (ISBN 954-9322-03-3).

Marinov B., Determination of the Shock Impulses Loading the Wheelsets of the Railway Vehicles with One-Stage Spring Suspension, Railway Transport Magazine, № 9, 2003, (ISSN 1310-683X).

Marinov B., Influence of the Periodic Shock Loads on Rail Vehicles with One-Stage Spring Suspension, Railway Transport Magazine, № 3, 2003, (ISSN 1310-683X).

Voukov G., V. Vlasev, M. Todorov, B. Marinov, Numerical Investigation of the Torsional Vibrations of the Drive Mechanism for a Horizontal Veneer Machine, Proceeding Scientific Papers-International Scientific Conference "50 Years University of Forestry", 2003, Sofia, Publisher “Lotus”.

Marinov B., G. Voukov, Determination of the Zones to Change the Critical Angular Velocities of Circular Machines for Longitudinal Cutting, Proceeding Scientific Papers-International Scientific Conference "50 Years University of Forestry", 2003, Sofia, Publisher “Lotus”.

Marinov B., On the Design of Power Transmission Line of a Ship, Journal of Archives of Transport, Vol. 14, issue 4, 2002, Publisher “Degruyter”, (ISSN 0866-9546).

Marinov B., Hr. Hristov, Links Dimension Optimization Approach in a Three Mass System of Multi Cylinder Internal Combustion Engine, Journal of Archives of Transport, Vol. 13, issue 1, 2001, Publisher “Degruyter”, (ISSN 0866-9546).

Marinov B., M. Mihaylov, Optimizing the Design of Roller Feeding Mechanism for Longitudinal Milling Woodworking Machine, The Scientific Newsletter, Vol.54, № 3, 2000, (ISSN 1310-3946).

Marinov B., J. Tsankov, Research on the Twisting of ICE Crankshaft as a Result the Bending in Operation Mode, the Scientific Newsletter, Vol. 54, № 3, 2000, (ISSN 1310-3946).

Vukov G., N. Staneva, M. Belberov, B. Marinov, Effect of the Transverse Vibrations Induced by the Static Unbalance of Longitudinal Milling Woodworking Machine on the Pressing Force, Festschrift Scientific Reports -75 Years of Higher Forestry Education in Bulgaria, University of Forestry-Sofia, 2000.

Marinov B. Establishment of the Functional Dependencies Between the Inertial and Elastic Characteristics of Basic Links of ICE and the Formed Tensions, National Centre for Information and Documentation - Central Technological Library, Sofia, 2000, (NACID-CTL, № 133-01-02).

Marinov B., M. Todorov, K. Minkov, On the Dynamics of a Connecting Gears for Drive of Locomotives, Mechanics of Machines Magazine, Vol. 29, №1, 2000, (ISSN 0861-9727).

Recent Projects: The author has been involved in many projects and contracts with external organizations, as well as the Institute of Mechanics - BAS. Dynamic loads that are generated by vibrating processes in some classes of machines and mechanisms are investigated. Such machines are trams, hydraulic structures, machines with cardan transmissions, etc. The author has also taken part in various research projects.

Membership: Member of the Union of Scientists in Bulgaria

Honors: The author is involved in two national encyclopedic books:

150 Figures of the Bulgarian Science, Published by “Veritas – N. Y”., Veliko Tarnovo, 2011, (ISBN 978-954-92773-1-9).

Eminent Figures of Modern Bulgaria, Published by Publishing House “Asenevtsi”, Sofia, Bulgaria, 2013, (ISBN 978-954-8898-30-0).

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Institute of Mechanics tel.: +359 2 973 31 40; e-mail: office@imbm.bas.bg