! A beam case with some geometric appeal: A coil spring ! ! To make the mesh: ! ElmerGrid 1 2 spring.grd ! octave beam2spring.m ! ! P.R. 31.1.2021 Check Keywords "Warn" Header Mesh DB "." "spring" End Simulation Max Output Level = 5 Coordinate System = Cartesian 3D Simulation Type = Steady Output Intervals = 1 Steady State Max Iterations = 1 Post File = "spring.vtu" End Body 1 Equation = 1 Material = 1 End Material 1 Youngs Modulus = Real 200e+9 Shear Modulus = Real 79e+9 ! Specify I_k: Second Moment of Area = Real 4.9087e-10 ! Specify A: Cross Section Area = Real 7.8540e-05 ! Specify J_T: Torsional Constant = Real 9.8175e-10 ! The density is used only in transient cases: Density = 7800.0 End Equation 1 :: Active Solvers(1) = 1 Solver 1 Equation = "Timoshenko Beam Equations" Procedure = "BeamSolver3D" "TimoshenkoSolver" Nonlinear System Max Iterations = 1 ! Linear System Solver = "Direct" ! Linear System Direct Method = umfpack Displace Mesh = True Linear system solver = iterative Linear system iterative method = GCR Linear system GCR restart = 100 Linear system preconditioning = ILUT Linear System ILUT Tolerance = 5.0e-7 Linear System Max Iterations = 5000 Linear System Convergence Tolerance = 1e-13 Linear System Row Equilibration = True Linear System Normwise Backward Error = True End Boundary Condition 1 Target Boundaries(1) = 1 U 1 = Real 0.0 U 2 = Real 0.0 U 3 = Real 0.0 Theta 1 = Real 0.0 Theta 2 = Real 0.0 Theta 3 = Real 0.0 End Boundary Condition 2 Target Boundaries(1) = 2 U 1 = Real 0.0 U 2 = Real 0.0 U 3 = Real 1.0 End Solver 1 :: Reference Norm = 2.17493792E-01
