Sumudu HerathUniversity of Moratuwa | UoM · Department of Civil Engineering
Sumudu Herath
Doctor of Philosophy
Researcher in data-driven methods in computational mechanics, structural optimisation and steel structures
About
25
Publications
6,753
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54
Citations
Citations since 2017
Introduction
Sumudu currently works as a Lecturer at the Department of Civil Engineering, University of Moratuwa, Sri Lanka. After obtaining his PhD from the University of Cambridge in the field of Computational Mechanics, Sumudu is currently investigating the use of Data-driven techniques in a wide range of Civil Engineering applications. A few of these applications include Structural optimization, Gaussian processes regression , data-driven homogenisation techniques and material designs.
Additional affiliations
October 2016 - December 2019
Publications
Publications (25)
A set of micro-mechanical analyses is carried out to investigate the sensitivity of the homogenized response of two-ply carbon fiber woven composites on relative positioning of tow arrangements. In this paper, first, we present a convergence study to validate the applicability of the characteristic unit cell to capture the macroscale mechanical res...
A numerical model was developed to investigate the deflection of permeable interlocking concrete blocks. In this study, the acceptance of paving blocks with extensive plan areas was tested. ABAQUS finite element modeling software which is commercially available was used and a static, linear perturbation analysis was carried out. Three alternative b...
Predicting bulk-average velocity (UB) in open channels with rigid vegetation is complicated due to the non-linear nature of parameters. Despite higher accuracy, existing regression models fail to highlight the feature importance or causality of respective predictions. Therefore, we propose a method to predict UB and the friction factor in the surfa...
During the past decade, precast wall panels became one of the popular precast panel elements satisfying both load-bearing and non-load bearing structural requirements. Originally, precast wall panels were intended to be used as internal partition wall panels, which are not expected to resist loading nor undergo significant deformations. This paper...
A method for multiscale simulation and material design of thin membranes using Gaussian processes is proposed to assist in the mechanical analysis and design of woven textiles. Most of the existing concurrent multiscale simulation schemes have a limited capability in the combined mechanical analysis and design of woven textiles. In addition, the in...
This paper presents an energy based method of stochastic optimisation for orthotropic material orientation of finite deformable thin-shells. A closed form equation expressing the 3-dimensional orthotropic material parameters in any given spatial direction is derived to avoid using tedious tensor algebra on material models. This generalised material...
Knitting is an effective technique for producing complex three‐dimensional surfaces owing to the inherent flexibility of interlooped yarns and recent advances in manufacturing providing better control of local stitch patterns. Fully yarn‐level modelling of large‐scale knitted membranes is not feasible. Therefore, we use a two‐scale homogenisation a...
Honeycombs are formed due to trapped air voids around the coarse aggregates during concreting. These can form inside the concrete structures and on the surface as well. Detecting honeycomb concrete structures is essential to ensure the structural integrity and durability of the structure. However, detecting internal honeycombs are much cumbersome a...
Among the various structural optimization tools, topology optimization is the widely used technique in obtaining the initial design of structural components. The resulting topologically optimal initial design will be the input for subsequent structural optimizations such as shape, size and layout optimizations. However, iterative solvers used in co...
Knitting is an effective technique for producing complex three-dimensional surfaces owing to the inherent flexibility of interlooped yarns and recent advances in manufacturing providing better control of local stitch patterns. Fully yarn-level modelling of large-scale knitted membranes is not feasible. Therefore, we consider a two-scale homogenisat...
![Spatial convergence of the tip loaded 45∘\documentclass[12pt]{minimal}...](publication/350804883/figure/fig3/AS:1011635447676934@1618204094685/Spatial-convergence-of-the-tip-loaded-45documentclass12ptminimal_Q320.jpg)
We present a set of advanced analytical formulations that facilitates the accurate analysis and efficient implementation of finite deformable thin Kirchhoff–Love beams. This paper enhances the prevailing differential geometry based large deformation beam models by producing geometrically exact formulations for initial curvatures, non-zero force tan...
With the rapid advancement of technologies such as Laser Scanning and Point Cloud Data processing, the influence of these technologies in Civil Engineering Projects are inevitable. These technologies are used in various industries, including Civil Engineering, in tasks namely, 3D model preparation, Construction progress monitoring, Quality control,...
Topology optimization is the tool of choice in obtaining the initial design of structural components. The resulting optimal design from topology optimization will be the input for subsequent structural optimizations with regard to shape, size, and layout. In reality, however, iterative solvers used in conventional SIMP (Simplified Isotropic Materia...
A method for nonlinear material modeling and design using statistical learning is proposed to assist in the mechanical analysis of structural materials. Although the extension to other materials is straightforward, the scope of this paper is limited to materials with an underlined periodic microstructure. Conventional computational homogenization s...
Ultra-thin woven fibre composites are becoming popular in a wide range of weight-sensitive applications and hence it is important to predict their mechanical properties for accurate analysis and design purposes. This paper presents a parametric study on the homogenized response of two-ply plain woven carbon fibre composites. Influence of volume fra...
Light-weight fabric membranes have gained increasing popularity over the past years due to their tailorable structural and material performances. These tailorable properties include stretch forming and deep drawing formability that exhibits excellent stretchability and drapeability properties of textiles and textile composites. Since the inception...
Refuelling in cis-lunar space can enable more massive payloads to be launched from Earth to deep space, significantly increasing access for scientific and industrial space applications on at the Moon, Mars, and beyond. The 2017 Caltech Space Challenge saw two teams of graduate and undergraduate students participate in a mission design competition t...
![Comparison of error margins of using CLT % Error with respect to [6] %...](profile/Sumudu-Herath/publication/309566785/figure/tbl3/AS:865644899745795@1583397235920/Comparison-of-error-margins-of-using-CLT-Error-with-respect-to-6-Error-with-respect_Q320.jpg)
This paper considers the applicability of classical lamination theory for woven composites for the analysis of bending behaviour of such composites. Although the Classical lamination theory is directly used for the analysis of uni-directional laminates with a good accuracy, it cannot be directly used for the analysis of bending behaviour of woven c...
Questions
Questions (2)
Hi all,
I am doing a modal Analysis using workbench 17.0 and defined some Deformation results under solution (A6). I can see the results in GUI but not in the .Output file. Does anyboddy know why it is and a method to get them printed in the .Output file or to another text file.
Thanks in advance
Sumudu
Hi there,
I am working on a Project where ANSYS and MATLAB are coupled together to get modal shapes and to seperately categorize them according to the type of the Vibration (i.e longitudinal, bending hori. , bending vertical etc.). Hence for the categorization I need to obtain the nodal directional deformations of two nodes being printed on the Output file. So please help me with the Input command for that.
Thanks in advance
Projects
Project (1)
