/[ascend]/trunk/models/atoms.a4l
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revision 865 by johnpye, Thu Sep 28 08:17:18 2006 UTC revision 866 by johnpye, Fri Sep 29 06:22:21 2006 UTC
# Line 1088  END length_parameter; Line 1088  END length_parameter;
1088  (*  M E C H A N I C AL   P R O P E R T I E S  (*  M E C H A N I C AL   P R O P E R T I E S
1089      ---------------------------------------- *)      ---------------------------------------- *)
1090            
1091      ATOM deflection REFINES solver_var      ATOM deflection REFINES solver_var (* to facilitate different display units for small values *)
1092          DIMENSION L          DIMENSION L
1093          DEFAULT 1 {mm};          DEFAULT 1 {mm};
1094          lower_bound := -10{m};          lower_bound := -10{m};
# Line 1096  END length_parameter; Line 1096  END length_parameter;
1096          nominal := 5{mm};          nominal := 5{mm};
1097      END deflection;      END deflection;
1098    
1099      ATOM second_moment_of_area REFINES solver_var      ATOM second_moment_of_area REFINES solver_var (* for use in beam bending problems *)
1100          DIMENSION L^4          DIMENSION L^4
1101          DEFAULT 6.67e5 {mm^4}; (* for 150UB14 Universal Beam, AISC (Australia) *)          DEFAULT 6.67e5 {mm^4}; (* for 150UB14 Universal Beam, AISC (Australia) *)
1102          lower_bound := 0 {mm^4};          lower_bound := 0 {mm^4};
# Line 1104  END length_parameter; Line 1104  END length_parameter;
1104          nominal := 1e6 {mm^4}; (* this may be too high still *)          nominal := 1e6 {mm^4}; (* this may be too high still *)
1105      END second_moment_of_area;      END second_moment_of_area;
1106    
1107        ATOM polar_moment_of_inertia REFINES solver_var (* for use in torsion problems *)
1108            DIMENSION L^4
1109            DEFAULT 28.2e3 {mm^4}; (* for 150UB14 Universal Beam, AISC (Australia) *)
1110            lower_bound := 0 {mm^4};
1111            upper_bound := 10000e3 {mm^4};
1112            nominal := 100e3 {mm^4}; (* this may be too high still *)
1113        END polar_moment_of_inertia;
1114    
1115      CONSTANT second_moment_of_area_constant      CONSTANT second_moment_of_area_constant
1116      REFINES real_constant DIMENSION L^4;      REFINES real_constant DIMENSION L^4;
1117            

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