/[ascend]/trunk/models/atoms.a4l
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revision 836 by johnpye, Thu Aug 17 14:54:26 2006 UTC revision 837 by johnpye, Fri Sep 8 06:40:59 2006 UTC
# Line 423  END length_parameter; Line 423  END length_parameter;
423          nominal := 1.0 {s^2/ft^5};          nominal := 1.0 {s^2/ft^5};
424      END k_constant;      END k_constant;
425    
426        ATOM youngs_modulus REFINES solver_var
427            (* the measure of the physical stiffness of a material *)
428            DIMENSION M/L/T^2
429            DEFAULT 200 {GPa};
430            lower_bound := 0 {Pa};
431            upper_bound := 1500 {GPa};
432            nominal := 40 {GPa};
433        END youngs_modulus;
434    
435      ATOM pressure_per_length REFINES solver_var      ATOM pressure_per_length REFINES solver_var
436          DIMENSION M/L^2/T^2          DIMENSION M/L^2/T^2
437          DEFAULT 50 {Pa/m};          DEFAULT 50 {Pa/m};
# Line 430  END length_parameter; Line 439  END length_parameter;
439          upper_bound := +10{bar/m};          upper_bound := +10{bar/m};
440          nominal := 50 {Pa/m};          nominal := 50 {Pa/m};
441      END pressure_per_length;      END pressure_per_length;
442      
443    
444  (*  M A S S / M O L E  Q U A N T I T I E S  (*  M A S S / M O L E  Q U A N T I T I E S
445      --------------------------------------  *)      --------------------------------------  *)
# Line 1056  END cost_per_energy; Line 1066  END cost_per_energy;
1066          upper_bound := 1e50{lb_mole*s};          upper_bound := 1e50{lb_mole*s};
1067          nominal := 10.0{lb_mole*s};          nominal := 10.0{lb_mole*s};
1068      END mole_sec;      END mole_sec;
1069    
1070    (*  M E C H A N I C AL   P R O P E R T I E S
1071        ---------------------------------------- *)
1072        
1073        ATOM second_moment_of_area REFINES solver_var
1074            DIMENSION L^4
1075            DEFAULT 6.67e5 {mm^4}; (* for 150UB14 Universal Beam, AISC (Australia) *)
1076            lower_bound := 0 {mm^4};
1077            upper_bound := 10000e6 {mm^4};
1078            nominal := 1e6 {mm^4}; (* this may be too high still *)
1079        END second_moment_of_area;
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john.pye@anu.edu.au
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