Please use this identifier to cite or link to this item: https://doi.org/10.1061/(ASCE)EM.1943-7889.0000312
Title: ES-PIM with cell death and birth technique for simulating heat transfer in concrete dam construction process
Authors: Cheng, J.
Liu, G.R. 
Li, T.-C.
Wu, S.-C.
Zhang, G.-Y.
Keywords: Cell death and birth
Concrete dam
Numerical methods
Smoothed meshfree methods
Transient heat transfer
Issue Date: 30-Jul-2011
Source: Cheng, J., Liu, G.R., Li, T.-C., Wu, S.-C., Zhang, G.-Y. (2011-07-30). ES-PIM with cell death and birth technique for simulating heat transfer in concrete dam construction process. Journal of Engineering Mechanics 138 (1) : 133-142. ScholarBank@NUS Repository. https://doi.org/10.1061/(ASCE)EM.1943-7889.0000312
Abstract: The meshfree edge-based smoothed point interpolation method (ES-PIM) is extended to the simulation of transient heat transfer problems for concrete dams in the construction process. The present ES-PIM consists of the following ingredients: (1) a novel cell death and birth technique is proposed to deal with the existence or nonexistence of the concrete layers, and hence the construction process of dams can be easily simulated; (2) a lumped diagonalization procedure for specific heat matrix is implemented to improve the stability and efficiency of transient computations; and (3) the triangular background cells are used to construct the nonoverlapping smoothing integral subdomains, and the cell-based T3- and T6/3-schemes are adopted for the node selection in the formation of PIM shape functions. On the basis of the weakened weak formulation, the ES-PIM is spatially stable and convergent to the exact solution. The ES-PIM can achieve better results in accuracy and convergence rate, in comparison with the finite element method using the same meshes. © 2012 American Society of Civil Engineers.
Source Title: Journal of Engineering Mechanics
URI: http://scholarbank.nus.edu.sg/handle/10635/60205
ISSN: 07339399
DOI: 10.1061/(ASCE)EM.1943-7889.0000312
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