APPLICATION OF THE MATHEMATICA SOFTWARE IN DEDUCING THEELEMENT STIFFNESS MATRIX OF THE BEAM AND COLUMN

摘要

The paper makes use of the powerful operation ability of the MATHEMATICA software, simplifies therncomplicated deducing process of the element stiffness matrix of the space beam of loading manifold factors intornthe formulation operation, avoids the troublesome program debugging and variable addressing, and gets anrnelement stiffness matrix considering the coupling affects of pulling/pressing, bending, shearing, torsion andrnwarping, which is proved correct and accurate by examples.