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Linear multipoint constraints applied via transformation as part of a direct stiffness assembly process
Author(s) -
Shephard Mark S.
Publication year - 1984
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620201112
Subject(s) - constraint (computer aided design) , stiffness matrix , transformation (genetics) , direct stiffness method , stiffness , mathematical optimization , process (computing) , transformation matrix , matrix (chemical analysis) , computer science , mathematics , engineering , structural engineering , geometry , physics , classical mechanics , materials science , composite material , gene , operating system , biochemistry , chemistry , kinematics
A procedure is presented for the application of linear multipoint constraints. The procedure employs the transformation approach for constraint application which reduces the number of equations to be solved by the number of constraints. However, the matrix operations implied by the approach are avoided by the proper construction of the constraint equations. A specific procedure for carrying out the constraint application process as part of the assembly of the global stiffness matrix is given.