DEFORM-3D Keyword Documentation Part 8 doc

=1 function of time Itype Type of interface heat transfer coefficient =0 Inactive (use global definitions such as inter-object data) =1 constant =2 function of time =3 function of pressure DEFINITION LOCTMP specifies the local heat transfer boundary definiton for an object. The keyword should be used if the local heat transfer is specified. REMARKS The keyword defines the heat exchange information such as temperature, convection coefficient, and the radiation view factor for a specific boundary. If the data is of constant type, only the constant value is given in the data list. If tabular data is used to describe any of the above variables, the number of data sets is listed followed by the data set. The following example shows how environmental temperature, emmisivity and heat flux are constant and the convection coefficient is a function of temperature. Note the use of comments on the keyword describing the contents. LOCTMP 1 1 0 0 2 0 0 % The keyword defintion 68 % The environmental temperature 2 % Number of data sets in convection coefficient 68 0.004 % First data set in the convection coefficient 220 0.006 % Second data set in the convection coefficient .7 % Emmisivity 10 % Heat flux When Itye is non-zero, the interface heat transfer coefficient is included in the local boundary condition. The value has higher priority than the interface heat transfer coefficient defined in inter-object data ( IHTCOF ). Applicable Simulation Modules: Thermal Applicable Simulation Modes: Heat Transfer Applicable Object Types: ALL except rigid LMAX LMAX XmaxLoad, YmaxLoad OPERAND DESCRIPTION DEFAULT XmaxLoad Maximum load of primary object in X direction 0.0 YmaxLoad Maximum load of primary object in Y direction 0.0 DEFINITION LMAX terminates a simulation when the load of the primary object reaches either XmaxLoad or YmaxLoad . REMARKS LMAX is one of several parameters used to control the termination of the simulation. Other keywords which effect simulation termination include: EMAX, NSTEP, SMAX, TMAX, VMIN. When the criteria specified in any of these keywords has been met, the simulation will terminate. Generally, LMAX is used when the movement control of the primary object is velocity specified. If XmaxLoad = 0 or YmaxLoad = 0, the parameter will not be used as a termination condition. Applicable simulation types: Isothermal Deformation Non-Isothermal Deformation One unit of depth is used for the specification of plain strain conditions, and 360 degrees is used to specify axisymmetrical conditions. RELATED TOPICS Termination parameters, Primary object Keywords: SMAX, TMAX, EMAX, NSTEP, VMIN LMTSTR LMTSTR Object, LimitSrate OPERAND DESCRIPTION DEFAULT Object Object number None LimitSrate Limiting strain rate None DEFINITION LMTSTR specifies a limiting value of effective strain rate under which the material is considered rigid. REMARKS The recommended value for LimitSrate is .1% to 1% of the average strain rate (AVGSTR). If the solution is having difficulty converging at the 1% level, increase LimitSrate up to 10% of the average strain rate. This is recommended for a couple of steps only, then reset. If LimitSrate is too small, the solution may have difficulty converging. If it is too large the accuracy of the solution will be degraded. The value of LimitSrate is updated by DEFORM during the simulation when there is a significant change in the strain rate. Applicable object types: Plastic, Porous RELATED TOPICS Deformation iteration Keywords: AVGSTR LOCATM LOCATM Object, Iwin, UsrRtn, Etype, Rtype, Atype Followed by Data OPERAND DESCRIPTION DEFAULT Object Object number None Iwin Heat exchange window index None UsrRtn User routine No. None Etype Type of environmental atom content definition None =0 constant =1 function of time Rtype Type of reaction rate coefficient =0 constant =1 function of time =2 function of temperature =3 function of time and atom Atype Type of atom flux =0 constant =1 function of time DEFINITION LOCATM specifies the local diffusion boundary definiton for an object. The keyword is used to specify the local diffusion boundary condition. REMARKS The keyword defines the heat exchange information such as environmental atom constant, reaction rate coefficient, and the atom flux. If the data is of constant type, only the constant value is given in the data list. If tabular data is used to describe any of the above variables, the number of data sets is listed followed by the data set. The following example shows how environmental atom content and atom flux are constant and the reaction rate coefficient is a function of time. Note the use of comments on the keyword describing the contents. LOCATM 1 1 0 0 1 0 % The keyword defintion 0.12 % The environmental atom constant 2 % Number of data in the reaction rate coefficient 1. 1.00 % First data set in the reaction rate coefficient 2. 1.20 % Second data set in the reaction rate coefficient 0.001 % Atom flux Applicable Simulation Modules: Diffusion Applicable Simulation Modes: Heat Transfer Applicable Object Types: ALL except rigid MATAXI MATAXI Object, Ndata, FieldWidth Element(1), MATAXI(1)(1), , MATAXI(1)(FieldWidth ) : : Element(Ndata), MATAXI(Ndata)(1), , MATAXI(Ndata)(FieldWidth) OPERAND DESCRIPTION DEFAULT Object Object number None Ndata Number of element/MATAXI pairs None FieldWidth Number of variables for each element =1 for 2D; = 9 for 3D None Element(i) Element number of ith data pair None MATAXI(i)(j) jth component of material axis data for the ith data pair (see below) DEFINITION MATAXI specifies the material axis at each element. In 2D, it has one component, which is the angle. In 3D, it has nine components, which are the vectors for material axis x, y, and z, in the global coordinate system. By default, they are (1,0,0), (0,1,0), and (0,0,1), respectively. REMARKS These state variables are computed only when the material is anisotropic. Related keyword: ANISO. MATDEN MATDEN Material, Density OPERAND DESCRIPTION DEFAULT Material Material number None Density Density None DEFINITION MATDEN specifies the density for a material. REMARKS MDSOBJ MDSOBJ RefObj1 RefObj2 Method Distance OPERAND DESCRIPTION DEFAULT RefObj1 Reference Object 1 None RefObj2 Reference Object 2 None Method Method to calculate distance 0 (0 = Total distance, 1 = X distance, 2 = Y distance) Distance Distance used to stop the simulation None DEFINITION MDSOBJ is a stopping criteria when the distance between two objects reaches a specified distance REMARKS This keyword must be used in conjunction with reference points. It impossible to calculate the distance between two objects with out having two points to use. [...]... Porous RELATED TOPICS Automatic mesh generation, Automatic remeshing Keywords: MGGRID, MGERR, MGNELM, MGSIZR, MGWCUV, MGWTMP, MGWSTN, MGWSTR MGUSER MGUSER Object, WinNo, Density, VelocityX, VelocityY, VelocityZ, WindowType, SpdTyp If WindowType = 1, parallelipiped defined by 8 corners Point(1), X(1), Y(1), Z(1) ::: Point (8) , X (8) , Y (8) , Z (8) If WindowTyp = 2: Cylinder OriginA_X, OriginA_Y, OriginA_Z OriginB_X,... MGWCUV is one of several keywords used to control the mesh density during AMG mesh generation The values from all the mesh density keywords are combined during the mesh generation process to create a mesh density distribution within the geometric boundary The keywords MGWCUV, MGWSTN, MGWSTR, MGWTMP, and MGWUSR specify relative mesh density weights to be assigned to the associated keyword parameter (curvature,... MGWSTN is one of several keywords used to control the mesh density during AMG mesh generation The values from all the mesh density keywords are combined during the mesh generation process to create a mesh density distribution within the geometric boundary The keywords MGWCUV, MGWSTN, MGWSTR, MGWTMP, and MGWUSR specify relative mesh density weights to be assigned to the associated keyword parameter (curvature,... MGWSTR is one of several keywords used to control the mesh density during AMG mesh generation The values from all the mesh density keywords are combined during the mesh generation process to create a mesh density distribution within the geometric boundary The keywords MGWCUV, MGWSTN, MGWSTR, MGWTMP, and MGWUSR specify relative mesh density weights to be assigned to the associated keyword parameter (curvature,... MGSIZR is one of several keywords used to control the mesh density during AMG mesh generation If equal sized elements are desired, then SizeRatio = 1 If SizeRatio = 0, the element size ratio will not be a factor in the mesh density distribution Applicable object types: Rigid, Elastic, Plastic, Elastoplastic, Porous RELATED TOPICS Automatic mesh generation, Automatic remeshing Keywords: MGGRID, MGERR,... object is being meshed using AMG REMARKS MGTELM is one of several keywords used to control the mesh density during AMG mesh generation The thickness direction of an object is perpendicular to the geometry center which is defined by the medial axis The total number of elements to be generated in a mesh is controlled by the value of NumElem in keyword MGNELM If the value of ElemThick results in a mesh that... REMARKS MGERR is one of several keywords used to control the mesh density when AMG mesh generation is performed The distance and angle tolerances are used to capture critical boundary geometry that might otherwise be lost when the mesh is generated Applicable object types: Rigid, Elastic, Plastic, Elastoplastic, Porous RELATED TOPICS Automatic mesh generation, Automatic remeshing Keywords: MGGRID, MGNELM,... REMARKS MGGRID is one of several keywords used to control the mesh density when AMG mesh generation is being performed Increasing the value of Xdivision and Ydivision will result in sharper gradients between areas of differing mesh density Applicable object types: Rigid, Elastic, Plastic, Elastoplastic, Porous RELATED TOPICS Automatic mesh generation, Automatic remeshing Keywords: MGERR, MGNELM, MGTELM,... meshing method 80 00 100 0 =0: Unstructured tetrahedra =1: Brick (refer to WPAXIS definition) =2: (obsolete, It will be kept to maintain compatibility with previous versions and will be treated as 1 in mesh generator.) DEFINITION MGNELM specifies the preferred method and approximate number of elements to be generated when an object is being meshed using AMG REMARKS MGNELM is one of several keywords used... mesh generation, Automatic remeshing Keywords: MGGRID, MGERR, MGTELM, MGSIZR, MGWCUV, MGWTMP, MGWSTN, MGWSTR, WPAXIS MGSIZM MGSIZM OPERAND Object MaxSize Object, MaxSize DESCRIPTION Object Number Maximum size of the largest element DEFAULT None 1.0 DEFINITION MGSIZM controls the size of the largest element in the object’s mesh REMARKS MGSIZM is one of several keywords used to control the mesh density . WindowType, SpdTyp If WindowType = 1, parallelipiped defined by 8 corners Point(1), X(1), Y(1), Z(1) : : : Point (8) , X (8) , Y (8) , Z (8) If WindowTyp = 2: Cylinder OriginA_X, OriginA_Y, OriginA_Z. comments on the keyword describing the contents. LOCTMP 1 1 0 0 2 0 0 % The keyword defintion 68 % The environmental temperature 2 % Number of data sets in convection coefficient 68 0.004 % First. termination of the simulation. Other keywords which effect simulation termination include: EMAX, NSTEP, SMAX, TMAX, VMIN. When the criteria specified in any of these keywords has been met, the simulation