DEFORM-3D Keyword Documentation Part 7 pps

HDNPHA HDNPHA Mat, Type, N1 or Value, N2 if (Type=1,2,3) Atom(1), Hardness(1) Atom(N1), Hardness(N1) else if (Type = 4) Temp(1) Temp (N1) Atom(1) Atom (N2) Hardness(1) Hardness(N1xN2) OPERAND DESCRIPTION DEFAULT Mat Material Group Number NONE Type kind of hardness of each phase NONE =0 constant hardness =1 function of atom content =2 function of temperature =3 function of density =4 function of temperature and atom DEFINITION HDNPHA specifies the hardness of a material (or phase). The system units are dependent on the user. It should be reminded that the units used should be consist throughout the simulation for accurate interpretation of the results. REMARKS Users should distinguish the hardness as a material property and the hardness as an object state variable. The hardness as an object state variable is defined by keyword HDNOBJ, which stores the output of the Hardness calculation module. HDNEST defines the computation method used in the Hardness calculation module. Note that the hardness of the object may not be related to the hardness of the material when, for example, the cooling time is used for estimating hardness. Applicable Simulation Modules: Microstructure Applicable Simulation Modes: Transformation Applicable Object Types: ALL HDNRUL HDNRUL Mat, Type OPERAND DESCRIPTION DEFAULT Mat Material Number NONE Type =0 Isotropic NONE =1 Kinematic DEFINITION HDNRUL specifies the type of hardening that occurs in the material under an applied load. REMARKS The isotropic hardening rule assumes that the Von Mises yield surface expands uniformly as the material is stressed into the plastic regime. The kinematic hardening rule takes into account the Bauschinger Effect on the Von Mises yield surface that shifts the origin of the Von Mises yield circle. The use of the hardening model can only be used when the object is elasto-plastic (OBJTYP) and the flow stress model is type number 6. (FSTRES). The kinematic hardening model is recommended when running in the transformation mode (TRANS). It should be noted that the kinematic hardening model must only be used when the material undergoes small deformations. Flow Stress Model #6 Use Hardening Elasto-Plastic Object Model TRANS KINEMATIC OTHER ISOTROPIC Applicable Simulations Modules: Microstructure Applicable Simulation Modes: Transformation Applicable Object Types: Elasto-Plastic HDNTIM HDNTIM Matr, Npt, Cooling Time(1) Distance(1) : : Cooling Time(Ndata) Distance(Ndata) OPERAND DESCRIPTION DEFAULT Matr Material Number NONE Npt Number data for cooling time NONE DEFINITION HDNTIM specifies the relation between cooling time and the distance from the water-cooling end of the specimen. It should be noted that the cooling time versus distance is only valid for a specific temperature difference (high-low temperature). DEFORM TM does not interpolate the data if the user puts different data then the operation parameters, the resulting solution might be inaccurate. The distance is measured in terms of absolute length and not in terms of Jominy distance unit which is defined as 1/16 inch. EXAMPLE For material group #1 with 4 data pairs HDNTIM 1 4 0.0 0.2 1.0 0.5 2.0 0.7 3.0 0.8 REMARKS Applicable simulation types: Microstructure Module HEATCP HEATCP Object , Ftype , HeatCap or HEATCP Object , Ftype , Ndata Temp(1) , HeatCap(1) : : Temp(Ndata) , HeatCap(Ndata) HEATCP Object, Ftype, N1, N2 Temp(i) Temp(Ndata) Atom(i) Atom(Ndata) OPERAND DESCRIPTION DEFAULT Object Object number None Ftype Function type: None 0 = Constant heat capacity None 1 = Temperature dependent heat capacity None 2 = Density dependent heat capacity None 3 = Atom dependent heat capacity None 4 = Temperature and Atom dependent heat capacity None HeatCap Heat capacity None Ndata Number of temp/heat capacity data pairs None N1 Number of data pairs for function or temp Data when method=4 None N2 Number of data pairs for atom when method=4 None Temp(i) Temperature of ith data pair None HeatCap(i) Heat capacity of ith data pair None Density(i) Density data None Atom(i) Atom data None DEFINITION HEATCP specifies the heat capacity of a particular object. REMARKS The heat capacity may be specified as a constant value or as a set of temperature/heat capacity data pairs. If Ftype = 0 use the value HeatCap . If Ftype = 1 use the values Ndata , Temp(i) , HeatCap(i) . Each temperature/heat capacity pair should be provided on a separate line. When temperatures lie within the specified data range, linear interpolation is used to determine the corresponding heat capacity. When temperatures lie outside the specified data range, linear extrapolation is used to determine the corresponding heat capacity. If Ftype = 2 use the operands N1 and Density(i) . If Ftype = 3 use the operands N1 and Atom(i) . If Ftype = 4 use the operands N1 , N2 , Atom(i) and Temp(i) . The equation for heat capacity is: HeatCap =  c where HeatCap heat capacity  material density c material specific heat Applicable simulation types: Deformation Module Heat Transfer Non-Isothermal Deformation Microstructure Module RELATED TOPICS Keywords: THRCND IHTCOF IHTCOF Object1, Object2, Ftype, HeatCoeff or IHTCOF Object1, Object2, Ftype, Ndata Time/Press(1), HeatCoeff(1) : : Time/Press(Ndata), HeatCoeff(Ndata) OPERAND DESCRIPTION DEFAULT Object1 Object number of first object None Object2 Object number of second object None Ftype Function type None = 0 constant interface heat transfer coefficient = 1 interface heat transfer coefficient is a function of time = 2 interface heat transfer coefficient is a function of pressure HeatCoeff Interface heat transfer coefficient when Ftype = 0 Ndata Number of Time/Press interface heat transfer None coefficient data pairs Time/Press(i) Time ( Ftype = 1), or pressure ( Ftype = 2) of ith data pair None HeatCoeff(i) Interface heat transfer coefficient of ith data pair None DEFINITION IHTCOF specifies the heat transfer coefficient at the interface between two objects. REMARKS The interface heat coefficient may be specified as a constant, a function of time, or a function of interface pressure. If Ftype = 0, use the operand HeatCoeff . If Ftype = 2 or 3, use the operands Ndata, Time/Press, HeatCoeff(i) . When Ftype = 2, each data pair should be provided on a separate line, resulting in Ndata lines of Time/Press(i), HeatCoeff(i) . The interface heat transfer coefficient is generally a complex function determined by the interface pressure, amount of sliding, and interface temperature. [...]... (%)/ 1 2 3 0.1 50 60 70 0.2 80 90 100 0.3 110 120 130 Distance JOMINY 1 1 3 3 0.1 0.2 0.3 1 2 3 50 80 110 60 90 120 70 100 130 REMARKS Applicable Simulation Types: Microstructure Module KFREAD KFREAD number filename OPERAND DESCRIPTION DEFAULT number dummy number used to denote order file loading None (optional) filename Filename of keyword file to load None DEFINITION KFREAD loads a keyword file automatically... database using a DBREAD keyword and then load in the new geometry data using the KFREAD keyword RELATED TOPICS Multiple Operations KFWRIT KFWRIT filename OPERAND DESCRIPTION DEFAULT filename Filename of keyword file to write None DEFINITION KFWRIT writes the data in preprocessor into a keyword file REMARKS It is an action keyword placed in either an automatic script file or in a Master file RELATED TOPICS... action keyword placed in either an automatic script file or in a Master file The purpose of KFREAD is to load a keyword file to be converted into a database or to load information into the Preprocessor to overwrite current information For example, if during a multiple operations run the user wants to change the geometry of an object from a previous run, the user can load the database using a DBREAD keyword. .. OPERAND DESCRIPTION DEFAULT Object Object number to initialize None DEFINITION INICTC initializes the contact conditions for the specified object REMARKS INICTC is an action keyword This contact conditions are initialized when the keyword is read in to the Pre-Processor INTRST INTRST Object1, Object2, FuncTyp, ElcRst/Ndata Time/Prs(1), ElcRst(1) :: Time/Prs(Ndata), ElcRst(Ndata) OPERAND DESCRIPTION... direct iteration methods can be found in Metal Forming and the Finite-Element Method [1] Applicable simulation types: Isothermal Deformation Non-Isothermal Deformation RELATED TOPICS Iteration procedures Keywords: CVGERR, ITRMXD, ITRMXT, SOLMTT ITRMXD ITRMXD MaxIteration OPERAND DESCRIPTION DEFAULT MaxIteration Maximum iterations per deformation time step 200 DEFINITION ITRMXD limits the number of iterations... Iteration summaries for each deformation step are recorded in the ProblemID.MSG file Applicable simulation types: Isothermal Deformation Non-Isothermal Deformation RELATED TOPICS Iteration Procedures Keywords: CVGERR, ITRMTH, ITRMXT, SOLMTT ITRMXT ITRMXT MaxIteration OPERAND MaxIteration DESCRIPTION Maximum iterations per heat transfer time step DEFAULT 200 DEFINITION ITRMXT limits the number of iterations... iterations Iteration summaries for each heat transfer step are recorded in the ProblemID.MSG file Applicable simulation types: Non-Isothermal Deformation Heat Transfer RELATED TOPICS Iteration procedures Keywords: CVGERR, ITRMTH, ITRMXD, SOLMTT JOMINY JOMINY Matr, Itype, N1, N2 Atom(1) …Atom(Ndata) Distance(1) … Distance( Ndata) JOMINY(1) …JOMINY(Ndata) OPERAND DESCRIPTION DEFAULT Matr Material Group NONE... transformation with latent heat is ignored i = 1 Phase transformation with latent heat is considered DEFINITION LATENT indicates if latent heat calculation is required during heat transfer calculation This keyword has not been enabled in the present version REMARKS LATENT is not currently implemented in version 4.0 LOCDEF LOCDEF Object, LocNum, UsrRtn, PrsType, FricType, FricFuncType Followed by Data: ConstVal... f(pressure, temperature, surface stretch) DEFINITION LOCDEF specifies the local deformation boundary definition for an object It is also referred to as the "Advanced boundary conditions" REMARKS This keyword work in conjunction with ECCDEF to define the pressure and friction on a specific surface polygon Note that if the object is rigid, friction defined here has higher priority than the friction defined . Filename of keyword file to load None DEFINITION KFREAD loads a keyword file automatically into the preprocessor during a multiple operations run. REMARKS It is an action keyword placed. EXAMPLE Atom (%)/ Distance 1 2 3 0.1 50 60 70 0.2 80 90 100 0.3 110 120 130 JOMINY 1 1 3 3 0.1 0.2 0.3 1 2 3 50 80 110 60 90 120 70 100 130 REMARKS Applicable Simulation Types:. conditions for the specified object. REMARKS INICTC is an action keyword. This contact conditions are initialized when the keyword is read in to the Pre-Processor. INTRST INTRST Object1,