Ph. D From IIT Madras 1988-1992
M.E. From IISc Bangalore 1986-1987
B.Tech Nagarjuna University 981-1985
RESEARCH, TEACHING, or OTHER INTERESTS
Mechanical Engineering, Modeling and Simulation
14
Scopus Publications
290
Scholar Citations
9
Scholar h-index
9
Scholar i10-index
Scopus Publications
Finite element modeling technique for avionics PCB with electronic components in random vibration environment K. Jagadisan, P. Anil Kumar, P. Bangaru Babu Australian Journal of Mechanical Engineering, 2020 Electronic components normally experience functional failure due to vibration loads. To envisage the episode of this failure, it is necessary to estimate the vibration response of electronic components mounted on the printed circuit board (PCB). As a continuation to the research work which commenced with PCB level that unravelled the modeling mysteries concerned with accurate modeling of PCBs and their appropriate boundary conditions, the present work addressed the modeling issues allied to PCB with various electronic components having distinguished mounting configurations and are brought to reality with the abetment of Finite Element Analysis (FEA) and experimentation. Modeling approaches used in practice to address modeling part with regard to electronic components limit their scope to the extent of modal analysis. Unfortunately, information about a modeling option which yields to accurate prediction of vibration experienced by the electronic components is not available. Hence, objective of the current research work is to identify accurate & appropriate modeling approach for electronic components with the aid of FEA and experimentation. Comparison of frequencies and vibration response results is made for different modeling methodologies, including their ability of fetching the results swiftly and consistently in assortment with different component mounting configurations.
The material damping as Rayleigh damping in the vibrations of square and rectangular metalic plates Najeeb U. Khan, P. Bangaru Babu 2018 Advances in Science and Engineering Technology International Conferences Aset 2018, 2018 In this paper, an experimental investigation is carried out on square and rectangular plates of different materials with various edge conditions to estimate the Rayleigh damping coefficients. The determination of Rayleigh damping coefficients has become an important aspect of the dynamical analysis of delicate mechanical structural elements such as robotic arm manipulators, panels in space crafts and numerically controlled precision machine tools. The coefficients thus obtained are reinvestigated for a two-parameter model. Damping ratios can be determined by using estimated coefficients to assemble the Rayleigh damping matrix [C]. This method has been found to be very effective in the computation of the transient response using modal superposition technique and provides a methodology to have predictive computations of dynamic responses.
Statistical energy analysis parameter estimation for different structural junctions of rectangular plates Maruti B Mandale, P Bangaru Babu, SM Sawant Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science, 2016 In industries, the use of appropriate junctions between components is of paramount interest. Coupling loss factor is one of the important parameters in statistical energy analysis for vibroacoustic analysis of complicated structures in drawing board stage. The values of coupling loss factor were calculated and compared for different junctions. The screwed and bolted junctions were examined for thin rectangular plates of same size. The energy level difference method was used to find coupling loss factors because of its simplicity. These experimentally found coupling loss factors were later compared with analytical solutions. It is noticed that the analytical results are in good agreement with experimental results. It is also observed that coupling loss factor for bolted junction are relatively high than that for screwed junction.
Stress concentration around cut-outs in plates and cylindrical shells Arpn Journal of Engineering and Applied Sciences, 2016
Estimation of loss factors of a constrained layer plate using viscoelastic layer K Kishore Kumar, Y Krishna, P Bangarubabu Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications, 2015 A finite element method is developed and validated for the estimation of loss factors of a viscoelastically damped plate. Viscoelastic layer is used as constrained layer and is sandwiched between an aluminum base plate and a constraining layer. Frequency-dependent material properties are used for the viscoelastic material in the finite element model. The derived dynamic equations of motion are used to carry out harmonic analysis to determine the natural frequencies and loss factors of sandwich plate and validated with experimental results for cantilever boundary condition. The validated finite element model is then used to estimate the loss factors of sandwich plate with various boundary conditions and different thicknesses of constraining and constrained layer for a given base plate thickness. The results show that the loss factor is maximum for a constraining layer to sandwich plate thickness ratio of 0.40–0.45 and is independent of boundary condition. The loss factor increases with increase in thickness of the viscoelastic layer. The loss factor increases for higher mode for all boundary conditions.
Damping in beams using viscoelastic layers K Kishore Kumar, Y Krishna, P Bangarubabu Proceedings of the Institution of Mechanical Engineers Part L Journal of Materials Design and Applications, 2015 Various types of sandwich beams with viscoelastic cores are currently used in aerospace and automotive industries, indicating the need for simple methods describing the dynamics of these complex structures. In order to understand the effectiveness of the sandwich structures, the dynamics of bare beam with unconstrained and constrained viscoelastic layers are investigated in this study. The viscoelastic layer is bonded uniformly on the beam. The effects of distributed viscoelastic layer treatment on the loss factors are studied. From the experiments it is observed that beams with constrained viscoelastic layer provide higher loss factors than those with unconstrained layer. The dynamics of sandwich beams is modeled using Euler and Bernoulli beam theory. Frequency-dependent Young’s modulus and loss factors are considered in the model of viscoelastic material. The predicted Eigen frequencies obtained from the model are compared with the experimental results for two viscoelastic materials with aluminum base material. Frequency response functions are obtained from the finite element model and compared with experimental results for harmonic input. Reductions in vibration amplitudes for two viscoelastic materials (EAP-2 and EAP-43) are also compared. Based on the experimental results, it has been observed that the loss factors of EAP-43 are higher than that of EAP-2.
Analysis for optimal decisions on turning Ti-6Al-4V with Taguchi-grey method Kosaraju Satyanarayana, Anne Venu Gopal, Popuri Bangaru Babu Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science, 2014 The problem of machining titanium is one of the ever-increasing magnitudes due to its low thermal conductivity and work-hardening characteristic. In the present work, experimental studies have been carried out to obtain the optimum conditions for machining titanium alloy. The effect of machining parameters such as speed, feed, depth of cut and back rake angle on cutting force, and surface roughness were investigated. The significance of these parameters, on cutting force and surface roughness, has been established using the analysis of variance. The degree of influence of each process parameter on individual performance characteristic was analyzed from the experimental results obtained using the grey relational grade matrix. The back rake angle was identified as the most influential process parameter on cutting force and surface roughness. The cutting speed is identified as the most significant parameter for the turning operation according to the weighted sum grade of the cutting force and surface roughness.
Experimental investigations and modeling of machining titanium alloy - Ti-6Al-4V Kosaraju Satyanarayana, Anne Venu Gopal, Bangaru Babu Popuri Applied Mechanics and Materials, 2013 The problem of machining titanium is one of ever-increasing magnitude due to its low thermal conductivity and work hardening characteristic of the titanium alloy. The efficient machining of titanium alloy with coated carbides involves a proper selection of process parameters to minimizing the surface roughness and cutting force. In the present work, experimental studies have been carried out to obtain the optimum conditions for machining titanium alloy. The effect of machining parameters such speed, feed and depth of cut on the cutting force, surface roughness were investigated. The significance of these parameters, on cutting force and surface roughness has been established using the analysis of variance. Mathematical models have also been developed for estimating the cutting force and surface roughness on the basis of experimental results.
Finite element simulation of cutting forces in turning Ti6AI4V using deform 3D Kosaraju Satyanarayana, Anne Venu Gopal, Popuri Bangaru Babu ASME International Mechanical Engineering Congress and Exposition Proceedings Imece, 2013 Titanium alloys are widely used in aerospace industry due to their excellent mechanical properties though they are classified as difficult to machine materials. As the experimental tests are costly and time demanding, metal cutting modeling provides an alternative way for better understanding of machining processes under different cutting conditions. In the present work, a finite element modeling software, DEFORM 3D has been used to simulate the machining of titanium alloy Ti6Al4V to predict the cutting forces. Experiments were conducted on a precision lathe machine using Ti6Al4V as workpiece material and TiAlN coated inserts as cutting tool. L9 orthogonal array based on design of experiments was used to evaluate the effect of process parameters such as cutting speed and feed with a constant depth of cut 0.25 mm and also the tool geometry such as rake angle on cutting force and temperature. These results were then used for estimation of heat transfer coefficient and shear friction factor constant, which are used as boundary conditions in the process of simulation. Upon simulations a relative error of maximum 9.07% was observed when compared with experimental results. A methodology was adopted to standardize these constants for a given process by taking average values of shear friction factor and heat transfer coefficient, which are used for further simulations within the range of parameters used during experimentation. A maximum error of 9.94% was observed when these simulation results are compared with that of experimental results.
Experimental evaluation and ANN based prediction model for dynamic properties of epoxy glass fabric composites with natural rubber particle inclusions International Journal of COMADEM, 2013
Effect of Preload on Joint Rotation Constant of Conventional Aerospace Bolted Joints V Medepalli, KK Kalahasti, B Popuri ASME Aerospace Structures, Structural Dynamics, and Materials Conference … , 2023 2023
Numerical and Experimental Investigation of Additive Manufactured Cellular Lattice Structures VP Bogu, L Daloji, BB Popuri Soft Computing in Materials Development and its Sustainability in the … , 2022 2022
Recent Trends in Engineering Design B Popuri, A Tyagi, NR Chauhan, A Gupta Springer Singapore , 2022 2022
Non-Cavitating Noise Control of a Marine Propeller by Optimizing Number and Pitch of Blades V Ramakrishna, P Bangaru Babu, C Suryanarayana Recent Developments in Acoustics: Select Proceedings of the 46th National … , 2020 2020 Citations: 1
Finite element modeling technique for avionics PCB with electronic components in random vibration environment K Jagadisan, P Anil Kumar, P Bangaru Babu Australian Journal of Mechanical Engineering 18 (1), 26-31 , 2020 2020 Citations: 2
Estimation of coupling loss factors for rectangular plates with different materials and junctions MM Bhagwan, B Popuri Noise & Vibration Worldwide 50 (9-11), 306-312 , 2019 2019 Citations: 5
The material damping as Rayleigh damping in the vibrations of square and rectangular metalic plates NU Khan, PB Babu 2018 Advances in Science and Engineering Technology International … , 2018 2018 Citations: 1
Estimation of Statistical Energy Analysis Parameters For Structural Elements MB Mandale 2018
Statistical energy analysis parameter estimation for different structural junctions of rectangular plates MB Mandale, P Bangaru Babu, SM Sawant Proceedings of the Institution of Mechanical Engineers, Part C: Journal of … , 2016 2016 Citations: 7
Stress concentration around cut-outs in plates and cylindrical shells R Chowdhury, M Saiteja Reddy, PC Jain, P Bangaru Babu ARPN Journal of Engineering and Applied Sciences 11 (18), 11,074-11,084 , 2016 2016 Citations: 4
Estimation of loss factors of a constrained layer plate using viscoelastic layer KK Kumar, Y Krishna, P Bangarubabu Proceedings of the Institution of Mechanical Engineers, Part L: Journal of … , 2015 2015 Citations: 9
Active Repair of Engineering Structures Using Piezoelectric Patches UK Rao, P Bangaru Babu, C Nagaraju Ratio 1 (6), K1 , 2015 2015 Citations: 2
DAMPING LOSS FACTOR ESTIMATION BY EXPERIMENTAL METHOD FOR PLATE WITH CONVETIONAL AND COMPOSITE MATERIALS. MB Mandale, P Bangarubabu, SM Sawant International Journal on Design & Manufacturing Technologies 9 (2) , 2015 2015 Citations: 10
Damping in beams using viscoelastic layers KK Kumar, Y Krishna, P Bangarubabu Proceedings of the Institution of Mechanical Engineers, Part L: Journal of … , 2015 2015 Citations: 16
Active vibration control of smart beam under random vibrations AK Kaushik, Y Krishna, P Bangarubabu International Journal of Innovations in Engineering and Technology 5 (1), 8-16 , 2015 2015 Citations: 1
Analysis for optimal decisions on turning Ti–6Al–4V with Taguchi–grey method K Satyanarayana, AV Gopal, PB Babu Proceedings of the Institution of Mechanical Engineers, Part C: Journal of … , 2014 2014 Citations: 28
Finite element simulation of cutting forces in turning Ti6Al4V using DEFORM 3D K Satyanarayana, A Venu Gopal, P Bangaru Babu ASME International Mechanical Engineering Congress and Exposition 56185 … , 2013 2013 Citations: 6
Experimental evaluation and ANN based prediction model for dynamic properties of epoxy glass fabric composites with natural rubber particle inclusions. HR Sankar, RR Srikant, PV Krishna, VB Rao, PB Babu, GB Kiran International Journal of COMADEM 16 (3) , 2013 2013
Online tool condition monitoring in turning titanium (grade 5) using acoustic emission: modeling S Kosaraju, VG Anne, BB Popuri The International Journal of Advanced Manufacturing Technology 67 (5), 1947-1954 , 2013 2013 Citations: 36
Experimental Investigations and Modeling of Machining Titanium Alloy–Ti-6Al-4V K Satyanarayana, AV Gopal, BB Popuri Applied Mechanics and Materials 315, 562-566 , 2013 2013
MOST CITED SCHOLAR PUBLICATIONS
Taguchi analysis on cutting forces and temperature in turning titanium Ti-6Al-4V VGA Satyanarayana Kosaraju, BB Popuri International Journal of Mechanical and Industrial Engineering (IJMIE), ISSN , 2012 2012 Citations: 42
The effect of natural rubber particle inclusions on the mechanical and damping properties of epoxy-filled glass fibre composites H Ravi Sankar, P Vamsi Krishna, V Bhujanga Rao, P Bangaru Babu Proceedings of the Institution of Mechanical Engineers, Part L: Journal of … , 2010 2010 Citations: 41
Estimation of the dynamic properties of epoxy glass fabric composites with natural rubber particle inclusions HR Sankar, RR Srikant, PV Krishna, VB Rao, PB Babu International Journal of Automotive and Mechanical Engineering 7, 968-980 , 2013 2013 Citations: 37
Online tool condition monitoring in turning titanium (grade 5) using acoustic emission: modeling S Kosaraju, VG Anne, BB Popuri The International Journal of Advanced Manufacturing Technology 67 (5), 1947-1954 , 2013 2013 Citations: 36
Analysis for optimal decisions on turning Ti–6Al–4V with Taguchi–grey method K Satyanarayana, AV Gopal, PB Babu Proceedings of the Institution of Mechanical Engineers, Part C: Journal of … , 2014 2014 Citations: 28
Design optimisation of machining parameters for turning titanium alloys with Taguchi-Grey method K Satyanarayana, AV Gopal, PB Babu International Journal of Machining and Machinability of Materials 13 (2-3 … , 2013 2013 Citations: 23
Damping in beams using viscoelastic layers KK Kumar, Y Krishna, P Bangarubabu Proceedings of the Institution of Mechanical Engineers, Part L: Journal of … , 2015 2015 Citations: 16
Damping effect of viscoelastic materials on sandwich beams P Bangarubabu, KK Kumar, Y Krishna International conference on trends in industrial and mechanical engineering … , 2012 2012 Citations: 14
DAMPING LOSS FACTOR ESTIMATION BY EXPERIMENTAL METHOD FOR PLATE WITH CONVETIONAL AND COMPOSITE MATERIALS. MB Mandale, P Bangarubabu, SM Sawant International Journal on Design & Manufacturing Technologies 9 (2) , 2015 2015 Citations: 10
Estimation of loss factors of a constrained layer plate using viscoelastic layer KK Kumar, Y Krishna, P Bangarubabu Proceedings of the Institution of Mechanical Engineers, Part L: Journal of … , 2015 2015 Citations: 9
Statistical energy analysis parameter estimation for different structural junctions of rectangular plates MB Mandale, P Bangaru Babu, SM Sawant Proceedings of the Institution of Mechanical Engineers, Part C: Journal of … , 2016 2016 Citations: 7
Finite element simulation of cutting forces in turning Ti6Al4V using DEFORM 3D K Satyanarayana, A Venu Gopal, P Bangaru Babu ASME International Mechanical Engineering Congress and Exposition 56185 … , 2013 2013 Citations: 6
Estimation of coupling loss factors for rectangular plates with different materials and junctions MM Bhagwan, B Popuri Noise & Vibration Worldwide 50 (9-11), 306-312 , 2019 2019 Citations: 5
Stress concentration around cut-outs in plates and cylindrical shells R Chowdhury, M Saiteja Reddy, PC Jain, P Bangaru Babu ARPN Journal of Engineering and Applied Sciences 11 (18), 11,074-11,084 , 2016 2016 Citations: 4
Online tool wear monitoring using cutting forces in turning Ti-6Al-4V K Satyanarayana, A Venu Gopal, BB Popuri International Conference on Trends in Industrial and Mechanical Engineering … , 2012 2012 Citations: 3
Finite element modeling technique for avionics PCB with electronic components in random vibration environment K Jagadisan, P Anil Kumar, P Bangaru Babu Australian Journal of Mechanical Engineering 18 (1), 26-31 , 2020 2020 Citations: 2
Active Repair of Engineering Structures Using Piezoelectric Patches UK Rao, P Bangaru Babu, C Nagaraju Ratio 1 (6), K1 , 2015 2015 Citations: 2
Finite element simulation of cutting forces in turning Ti6AI4V using deform 3D, ASME International Mechanical Engineering Congress and Exposition S Kosaraju, VG Anne, BB Popuri Proceedings (IMECE) 2, 1-7 , 2013 2013 Citations: 2
Non-Cavitating Noise Control of a Marine Propeller by Optimizing Number and Pitch of Blades V Ramakrishna, P Bangaru Babu, C Suryanarayana Recent Developments in Acoustics: Select Proceedings of the 46th National … , 2020 2020 Citations: 1
The material damping as Rayleigh damping in the vibrations of square and rectangular metalic plates NU Khan, PB Babu 2018 Advances in Science and Engineering Technology International … , 2018 2018 Citations: 1
