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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Related citation:ZHAO Wei-min,GUO Feng,LI Gui-xian.A simple and robust method for essential boundary condition treatments in mesh-less methods[J].Journal of Harbin Institute Of Technology(New Series),2009,16(2):237-241.DOI:10.11916/j.issn.1005-9113.2009.02.018.
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A simple and robust method for essential boundary condition treatments in mesh-less methods
Author NameAffiliation
ZHAO Wei-min School of Machinery Science and Engineering, Daqing Petroleum Institute, Daqing 163001, China 
GUO Feng School of Mecharonics Engineering, Harbin Institute of Technology, Harbin 150001, China, guofeng230@163.com 
LI Gui-xian School of Mecharonics Engineering, Harbin Institute of Technology, Harbin 150001, China, guofeng230@163.com 
Abstract:
To improve the treatment efficiency of essential boundary condition in mesh-less methods, a simple and robust method is proposed in this paper. Rising weight of nodes in the construction of trail function, specified for essential boundary condition, can make the trail function pass through these nodes. And then, the trail function can satisfy the essential boundary condition previously by setting diagonal element to 1 or multiplying diagonal element by a big number in FEM. The MLS method is adopted to validate this method, and it is proved that this method is costless and robust in most of mesh-less methods.
Key words:  mesh-less method  essential boundary condition  rising weight
DOI：10.11916/j.issn.1005-9113.2009.02.018
Clc Number:TH6
Fund:

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