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BRIEF EXPOSURE TO MATRIX ANALYSIS
J AN ELEMENT FOR THE ONEDIMENSIONAL PROBLEM
17 other sections not shown
analysis assemblage assumed BAND MATRIX beam BEGIN body force boundary conditions calculated Chapter coefficients constant continuum convection coordinate system DATA defined derived determined differential equation direction displacement function displacement vector distributed loading elastic modulus elasticity ELEMENT NODE ELEMENT NUMBER element stiffness matrix energy potential entries equivalent nodal forces essential boundary Example FILE finite element method four-node quadrilateral Galerkin method global coordinates GLOBAL NODE NUMBERS global stiffness matrix GOSUB GOTO heat flow INPUT integral interpolation formula linear load vector matrix equation mesh natural coordinates nodal displacements nodal load obtain PEEK plane plot POKE potential energy PRINT PRINT PRINT problem procedure quadrilateral region shear shear stress shown in Figure side solution solve strain energy stress traction structure SUBROUTINE Substituting temperature three-node triangle trial function values variable variation WRITELN WRITELN(DEV XG(I yields zero