Finite Element Modeling of following research projects carried out with the help of Finite Element Analysis and Simulation Centre.


By Kuenzang Jurmey, Nishan Sharma Ghimire, Vigneswaran Sivahar, Gayan Aravinda Abeygunawardane, Miyuru Piyathilaka of Department of Materials Science and Engineering, University of Moratuwa

Project Summary

This research work is based on prediction of true compressive flow stress of AA 6063 through ultrasonic attenuation. AA 6063 specimens were compressed to obtain compressive flow stress and strain. Ultrasonic attenuation coefficient of the each compressed specimens were measured to correlate the variation of stresses with it. Finite Element Analysis (FEA) was performed to validate the frictional and misalignment effect during compression testing and to obtain true compressive flow stress.

The true compressive flow stress of metal cannot be determined due to the misalignment of test specimen and friction at the interface of specimen platens surfaces leading to barreling as shown in figure 1. Validation of frictional effect was made through FEA model shown in figure 3a with friction coefficient (penalty) of 0.45. It shows that the deformation is maximum at mid height position and minimum or zero near the specimen platen interfaces. With zero friction and zero misalignment in figure 3b, no barreling was observed. The flow of material and the stress distribution were uniform throughout the specimen irrespective of its position.
The relation between compressive flow stress from FEA and ultrasonic attenuation was obtained to predict the true compressive flow stress of AA 6063 through ultrasonic attenuation coefficient.

Development of an Active Compression System for Venous Disease

By L. S. Paranamana, S. K. M. M. Silva, M. A. S. V. Gunawardane of Department of Mechanical Engineerig, University of Moratuwa

Project Summary

The project “Development of an Active Compression System for Venous Disease” refers to a pneumatic controller system along with a modular type silicone made Active Compression System, its implementation and validation as a treatment for the chronic venous disease. The modern invasive treatments which are currently used have side effects such as cicatrices, rashes and hyper pigmentation. Hence the unwillingness of the patients to continue with the procedure of surgeries were dominant.

Considering the noninvasive treatment methods of graduated compression with an admissible pressure profile considered as the gold standard of treatment, the pneumatic controller was designed and manufactured so that the required standard pressure profiles could be obtained using the designed Active Compression System by maintaining a uniform pressure along the leg circumference.

The numerical simulations were done by ABAQUS simulation software and a massive support was given by FEA Simulation Center, Rubber Research Institute, Ratmalana, Sri Lanka to run the simulations to validate the results of the project.


By H. M. L. S. Bandara, D. M. P. Rangana, S. A. K.V. M. Piyathilake, G.A Abeygunawardane, V. Sivahar  of Department of Materials Science and Engineering, University of Moratuwa

Project Summary

The field of Metallurgical Engineering associated with the fatigue life of atmospherically corroded structural components has been studied in extensive detail, the world over. Most of the researchers in this area have focused on statistical analysis of fatigue strengths, alloy steels and other metals, pitting corrosion in a conventional manner. The scope of this work is focused on the fatigue behavior of low carbon steel, exposed to coastal atmospheric corrosion. The change in surface topography with time, due to atmospheric-corrosion of low-carbon steel is one of the two main concerns in this research. And the other concerning factor is the drop in fatigue strength with changing surface topography. In this research project, effect of surface topography of corroded low-carbon steel on their fatigue lives were evaluated with both experimentally and by finite element modelling. . Fatigue strength of corroded low carbon steel can be predicted up to a certain accuracy with the method explained in this work.Finite Element modeling related to this project done at Finite Element Analysis and Simulation Centre

    Invitation to Private Sector Entrepreneurs to join as Pioneer Partners to support this unique Project of the Ministry of Plantation Industries’ Rubber Research Institute of Sri Lanka and Plastics and Rubber Institute of Sri Lanka in a Public-Private sector Partnership, to facilitate the upgrading and development of the Sri Lankan Rubber Products Industry to compete successfully in the International markets


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