Civil and Structural Engineering, Multidisciplinary
14
Scopus Publications
130
Scholar Citations
7
Scholar h-index
4
Scholar i10-index
Scopus Publications
Performance analysis of natural rubber viscoelastic dampers: A low-cost solution for structural damping Uppari Ramakrishna, S. C Mohan JVC Journal of Vibration and Control, 2025 Passive control of multistory building frames using natural rubber-based viscoelastic dampers under seismic excitation is investigated. Viscoelastic dampers are the most often utilized as energy dissipation devices for mitigating the effects of seismic forces on the structure. This study aimed to determine the effect of viscoelastic dampers at various frequencies, amplitudes and application in to structural response reduction subjected to El Centro ground motions. In the beginning, rubber samples are acquired and tested for uniaxial tensile strength and stress relaxation test. The proper hardness was then chosen for fabricating the Viscoelastic dampers based on the analytical analysis. Cyclic loading is performed on the fabricated Viscoelastic dampers at varied frequencies and amplitudes. Then, the results were quantitatively confirmed using the FEM software ABAQUS V6.13. The test findings demonstrate that the newly fabricated model accurately describes the mechanical performance and damping capability of a viscoelastic damper, showing a 30% improvement in damping efficiency at 5 Hz compared to conventional models. Finally, the response reduction is drastically reduced when natural rubber-based viscoelastic dampers are introduced to the building model.
Assessing the Seismic Demands on Non-Structural Components Attached to Reinforced Concrete Frames Surya Prakash Challagulla, Denise-Penelope N. Kontoni, Ashok Kumar Suluguru, Ismail Hossain, Uppari Ramakrishna, Mohammed Jameel Applied Sciences Switzerland, 2023 Nonstructural components (NSCs) are the systems that are attached to the floors of a building structure. NSCs have become critical in sustaining post-earthquake functionality while constructing seismic-resilient structures. The seismic behavior of the NSCs primarily depends upon the behavior of the structure to which the NSC is attached. Building structures are subjected to earthquake loads and behave differently when the supporting soil type varies. In light of this, this study investigates the seismic demands on NSC attached to the floors of an elastic-reinforced concrete building frame supported by different soil types. The present study considered a regular building frame and a building frame with mass irregularity on the lower story. A total of 3 sets of 11 horizontal spectral-matched ground motions consistent with each soil type are considered. Floor response spectra (FRS) can be used to measure the seismic load on non-structural components. Primarily, it was found that the ordinates of FRS depend on the floor height, the vibration periods of the building, and the soil type. The presence of mass irregularity at the lower story amplified the floor response at all floor levels. Additionally, the values of floor spectral acceleration increase as soil flexibility increases. The amplification factors are critical for generating the floor response spectra, and their variation along the building height is discussed. The floor acceleration was found to vary non-linearly with the height of the building. Finally, artificial neural networks (ANNs) are employed to develop the prediction models for dynamic amplification factors. The results calculated by the dynamic time history analyses are utilized to validate the proposed prediction models.
Influence of a Soft Story on the Seismic Response of Non-Structural Components Vyshnavi Pesaralanka, S. P. Challagulla, Felipe Vicencio, P. Suresh Chandra Babu, Ismail Hossain, Mohammed Jameel, Uppari Ramakrishna Sustainability Switzerland, 2023 Multi-story, reinforced-concrete (RC) building structures with soft stories are highly vulnerable to damage due to earthquake loads. The soft story causes a significant stiffness irregularity, which has led to numerous buildings collapsing in previous seismic events. In addition to the structural collapse, the failure of non-structural components (NSCs) has also been observed during past earthquakes. In light of this, this study investigates the effect of a soft story and its location on the seismic behavior of a supporting building and NSCs. The soft story is assumed to be located on the bottom (ground), middle, and top-story levels of the considered building models. Story displacements and inter-story drift ratios are evaluated to assess structural behavior. The floor response spectra and the amplification effects of NSC on the floor acceleration responses are studied to understand the behavior of NSCs. The analysis results revealed that the bottom soft story exhibits a considerable vertical stiffness irregularity, and its position substantially affects the floor response spectra. The amplification in the floor acceleration response was found to be greater at the soft-story level. This study reported that middle soft-story buildings exhibit the most remarkable amplification in the component’s acceleration. Finally, peak floor response demands are compared with the code-based formulation, and it is found that the code-based formulation’s linear assumption may lead peak floor response demands to be underestimated or overestimated.
SEISMIC PROTECTION OF SIMILAR ADJACENT BUILDINGS COUPLED WITH OPTIMAL VISCOELASTIC DAMPERS World Conference on Earthquake Engineering Proceedings, 2021
Building the future: Manufacturing of foldable high-rises U Ramakrishna, BJ Persis, L Siddhartha, P Bhagath, GA Rao Computational Techniques and Smart Manufacturing, 32-39 , 2026 2026.0
Sensor-based crack detection in concrete structures, including technologies, challenges, and trends U Ramakrishna, A Rojarani Computational Techniques and Smart Manufacturing, 41-48 , 2026 2026.0
Performance analysis of natural rubber viscoelastic dampers: A low-cost solution for structural damping U Ramakrishna, SC Mohan Journal of Vibration and Control, 10775463251341376 , 2025 2025.0 Citations: 1
Reusing Waste Plastics to Enhance Flexible Pavement Performance U Ramakrishna, R Saipreethi, KV Vardhan, GS Reddy Journal of Polymer & Composites 13 (1), 173-183 , 2025 2025.0
Shake-table testing of two adjacent similar building frames connected with optimal viscoelastic dampers R Uppari, SC Mohan Innovative Infrastructure Solutions 9 (10), 387 , 2024 2024.0 Citations: 2
Experimental investigation of strength of concrete with GGBS, granite powder and treated wastewater U Ramakrishna, G Mounika, M Likhitha, M Harikrishna, K Sachin Materials Today: Proceedings , 2023 2023.0 Citations: 2
Experimental investigation on self-curing concrete with sodium lignosulphate by partial replacement of cement with flyash U Ramakrishna, GNK Reddy, K Saisri, DS Teja, A Akhila, K Nikhil Materials Today: Proceedings , 2023 2023.0 Citations: 7
A review on effect of red mud on properties of alkali activated materials (AAMs) and geopolymers (GPs) G Mounika, U Ramakrishna, GNK Reddy, KS Kumar Materials Today: Proceedings , 2023 2023.0 Citations: 21
Influence of a soft story on the seismic response of non-structural components V Pesaralanka, SP Challagulla, F Vicencio, PS Chandra Babu, I Hossain, ... Sustainability 15 (4), 2860 , 2023 2023.0 Citations: 23
Assessing the seismic demands on non-structural components attached to reinforced concrete frames SP Challagulla, DPN Kontoni, AK Suluguru, I Hossain, U Ramakrishna, ... Applied Sciences 13 (3), 1817 , 2023 2023.0 Citations: 20
Improving the Seismic Performance of Dynamically Similar Buildings Using Damper Connected Control Technique U RAMAKRISHNA 2022.0 Citations: 1
Multi-objective optimisation for response reduction of dynamically similar adjacent buildings with optimal VE dampers U Ramakrishna, SC Mohan, MB Patil International Journal of Structural Engineering 12 (3), 285-301 , 2022 2022.0 Citations: 2
Multi-objective optimisation of damper placement for improved seismic response in dynamically similar adjacent buildings MB Patil, U Ramakrishna, SC Mohan Sādhanā 45 (1), 202 , 2020 2020.0 Citations: 7
Vibration Control of Dynamically Similar Buildings Optimally Connected by Viscoelastic Dampers U Ramakrishna, SC Mohan Journal of The Institution of Engineers (India): Series A, 1-13 , 2020 2020.0 Citations: 9
Experiments on Coupled Technique for Adjacent Similar Buildings U Ramakrishna, SC Mohan International Journal of Engineering 33 (9), 1703-1709 , 2020 2020.0 Citations: 5
Performance of low-cost viscoelastic damper for coupling adjacent structures subjected dynamic loads U Ramakrishna, SC Mohan Materials Today: Proceedings 28, 1024-1029 , 2020 2020.0 Citations: 24
Optimal configuration of viscous dampers connected to adjacent similar buildings using particle swarm optimization U Ramakrishna, SC Mohan, KS Pavan Kumar Advanced Engineering Optimization Through Intelligent Techniques: Select … , 2019 2019.0 Citations: 6
Design of Experiments for Structural Model Updating of Steel Structure Using Dynamic Testing P Ansuman, VG Ganesh, S Panigavi, CBAM Teja, U Ramkrishna, KR J.S, ... International Journal of Recent Technology and Engineering 7 (6C2), 599-604 , 2019 2019.0
Earthquake Resisting Building Comparative study on design of multi-story building in seismic zones U Ramakrishna, S Ananda Rao International Journal of Advanced Technology and Innovative Research 8 … , 2016 2016.0
SEISMIC PROTECTION OF SIMILAR ADJACENT BUILDINGS COUPLED WITH OPTIMAL VISCOELASTIC DAMPERS U Ramakrishna, SC Mohan, MB Patil
MOST CITED SCHOLAR PUBLICATIONS
Performance of low-cost viscoelastic damper for coupling adjacent structures subjected dynamic loads U Ramakrishna, SC Mohan Materials Today: Proceedings 28, 1024-1029 , 2020 2020.0 Citations: 24
Influence of a soft story on the seismic response of non-structural components V Pesaralanka, SP Challagulla, F Vicencio, PS Chandra Babu, I Hossain, ... Sustainability 15 (4), 2860 , 2023 2023.0 Citations: 23
A review on effect of red mud on properties of alkali activated materials (AAMs) and geopolymers (GPs) G Mounika, U Ramakrishna, GNK Reddy, KS Kumar Materials Today: Proceedings , 2023 2023.0 Citations: 21
Assessing the seismic demands on non-structural components attached to reinforced concrete frames SP Challagulla, DPN Kontoni, AK Suluguru, I Hossain, U Ramakrishna, ... Applied Sciences 13 (3), 1817 , 2023 2023.0 Citations: 20
Vibration Control of Dynamically Similar Buildings Optimally Connected by Viscoelastic Dampers U Ramakrishna, SC Mohan Journal of The Institution of Engineers (India): Series A, 1-13 , 2020 2020.0 Citations: 9
Experimental investigation on self-curing concrete with sodium lignosulphate by partial replacement of cement with flyash U Ramakrishna, GNK Reddy, K Saisri, DS Teja, A Akhila, K Nikhil Materials Today: Proceedings , 2023 2023.0 Citations: 7
Multi-objective optimisation of damper placement for improved seismic response in dynamically similar adjacent buildings MB Patil, U Ramakrishna, SC Mohan Sādhanā 45 (1), 202 , 2020 2020.0 Citations: 7
Optimal configuration of viscous dampers connected to adjacent similar buildings using particle swarm optimization U Ramakrishna, SC Mohan, KS Pavan Kumar Advanced Engineering Optimization Through Intelligent Techniques: Select … , 2019 2019.0 Citations: 6
Experiments on Coupled Technique for Adjacent Similar Buildings U Ramakrishna, SC Mohan International Journal of Engineering 33 (9), 1703-1709 , 2020 2020.0 Citations: 5
Shake-table testing of two adjacent similar building frames connected with optimal viscoelastic dampers R Uppari, SC Mohan Innovative Infrastructure Solutions 9 (10), 387 , 2024 2024.0 Citations: 2
Experimental investigation of strength of concrete with GGBS, granite powder and treated wastewater U Ramakrishna, G Mounika, M Likhitha, M Harikrishna, K Sachin Materials Today: Proceedings , 2023 2023.0 Citations: 2
Multi-objective optimisation for response reduction of dynamically similar adjacent buildings with optimal VE dampers U Ramakrishna, SC Mohan, MB Patil International Journal of Structural Engineering 12 (3), 285-301 , 2022 2022.0 Citations: 2
Performance analysis of natural rubber viscoelastic dampers: A low-cost solution for structural damping U Ramakrishna, SC Mohan Journal of Vibration and Control, 10775463251341376 , 2025 2025.0 Citations: 1
Improving the Seismic Performance of Dynamically Similar Buildings Using Damper Connected Control Technique U RAMAKRISHNA 2022.0 Citations: 1
Building the future: Manufacturing of foldable high-rises U Ramakrishna, BJ Persis, L Siddhartha, P Bhagath, GA Rao Computational Techniques and Smart Manufacturing, 32-39 , 2026 2026.0
Sensor-based crack detection in concrete structures, including technologies, challenges, and trends U Ramakrishna, A Rojarani Computational Techniques and Smart Manufacturing, 41-48 , 2026 2026.0
Reusing Waste Plastics to Enhance Flexible Pavement Performance U Ramakrishna, R Saipreethi, KV Vardhan, GS Reddy Journal of Polymer & Composites 13 (1), 173-183 , 2025 2025.0
Design of Experiments for Structural Model Updating of Steel Structure Using Dynamic Testing P Ansuman, VG Ganesh, S Panigavi, CBAM Teja, U Ramkrishna, KR J.S, ... International Journal of Recent Technology and Engineering 7 (6C2), 599-604 , 2019 2019.0
Earthquake Resisting Building Comparative study on design of multi-story building in seismic zones U Ramakrishna, S Ananda Rao International Journal of Advanced Technology and Innovative Research 8 … , 2016 2016.0
SEISMIC PROTECTION OF SIMILAR ADJACENT BUILDINGS COUPLED WITH OPTIMAL VISCOELASTIC DAMPERS U Ramakrishna, SC Mohan, MB Patil
