Match!
Mochamad Raditya Pradana
National University of Singapore
ExtrapolationMaterials scienceWeldingEngineering drawingStructural engineering
5Publications
4H-index
52Citations
What is this?
Publications 6
Newest
#1Mochamad Raditya Pradana (NUS: National University of Singapore)H-Index: 4
#2Xudong Qian (NUS: National University of Singapore)H-Index: 16
Abstract Discrete Element Method (DEM) with inter-element bond has emerged as a promising numerical approach to simulate the ice-structure interaction. This approach simulates ice physically during pre- and post-failure, and thus offers reasonable ice load predictions when the ice mechanical properties are modeled accurately. However, achieving the desired mechanical properties in DEM often requires extensive trial-and-error process. This paper attempts to alleviate the iterative work by investi...
1 CitationsSource
#1Mochamad Raditya Pradana (NUS: National University of Singapore)H-Index: 4
#2Xudong Qian (NUS: National University of Singapore)H-Index: 16
Last. Aziz Ahmed (UOW: University of Wollongong)H-Index: 4
view all 3 authors...
Abstract The current design standard lacks the detailed approach to estimate managed ice actions, which in turn forces the industry to rely on ice basin model tests and calibrated numerical simulations. To address the need for a reliable assessment of managed ice actions on large-scale floaters, this paper proposes an efficient two-dimensional discrete element simulation with polygonal elements, which integrates smoothly with a mooring system modeling and a hydrodynamic force representation. The...
1 CitationsSource
#1Mochamad Raditya Pradana (NUS: National University of Singapore)H-Index: 4
#2Xudong Qian (NUS: National University of Singapore)H-Index: 16
Last. Somsak Swaddiwudhipong (NUS: National University of Singapore)H-Index: 24
view all 3 authors...
Abstract This paper presents two simplified procedures for the calculation of the Effective Notch Stress (ENS) on non-overlapping circular hollow section (CHS) K-joints. The proposed procedures aim to alleviate the modeling challenges associated with the traditional ENS calculation on joints with complex geometry, such as the CHS joints. The first procedure is an extension of the recently proposed extrapolation method, similar to the extrapolation in the widely-used Structural Hot-Spot Stress (S...
4 CitationsSource
#1Mochamad Raditya Pradana (NUS: National University of Singapore)H-Index: 4
#2Xudong Qian (NUS: National University of Singapore)H-Index: 16
Last. W. Shen (NUS: National University of Singapore)H-Index: 1
view all 4 authors...
This paper presents an extrapolation method to determine the effective notch stress (ENS) on the weld toes of welded circular hollow section (CHS) X-joints in-line with the extrapolation method to determine the structural hot-spot stress in existing design guidelines. This investigation verifies and extends the recently proposed ENS extrapolation scheme to CHS X-joints, which elevates significantly the difficulty in generating a weld toe radius along the brace-to-chord intersection as required i...
7 CitationsSource
#1Mochamad Raditya Pradana (NUS: National University of Singapore)H-Index: 4
#2Xudong Qian (NUS: National University of Singapore)H-Index: 16
Last. Somsak Swaddiwudhipong (NUS: National University of Singapore)H-Index: 24
view all 3 authors...
This paper presents the development of an extrapolation method to estimate the notch stress in welded steel joints, in line with the effective notch stress concept described in the International Institute of Welding guideline. The proposed approach provides a convenient method to determine the local notch stress at the weld toes without the need to model a finite notch radius as required in engineering guidelines, which creates significant modeling challenges in the numerical procedure, especial...
12 CitationsSource
#1Xudong Qian (NUS: National University of Singapore)H-Index: 16
#2Kittikun Jitpairod (NUS: National University of Singapore)H-Index: 1
Last. Mochamad Raditya Pradana (NUS: National University of Singapore)H-Index: 4
view all 7 authors...
Abstract This paper presents the experimental findings on the fatigue performance and residual strength of the circular hollow section X-joints with a concrete-filled chord. The welding profile along the brace-to-chord intersection employs a recently proposed set of welding details, namely the full capacity tubular joint welds. The experimental investigation focuses on: 1) the stress concentration comparison corresponding to different stages of the specimen preparation, 2) the fatigue crack init...
29 CitationsSource
1