PAT312, Section 15, December 2006 S15-1 Copyright 2007 MSC.Software Corporation SECTION 15 FIELDS

PAT312, Section 15, December 2006 S15-2 Copyright 2007 MSC.Software Corporation

PAT312, Section 15, December 2006 S15-3 Copyright 2007 MSC.Software Corporation FIELDS l Fields are used to define variation in: l Load / Boundary Conditions l Material Properties l Element Properties l There are three types of Fields: l Spatial Fields l Material Property Fields l Non-Spatial Fields

PAT312, Section 15, December 2006 S15-4 Copyright 2007 MSC.Software Corporation MATERIAL PROPERTY FIELDS l Material Property Fields – Variation of the Field with respect to l Temperature, Strain, Strain Rate, Time and Frequency l User-defined mix of allowable Independent variables and compiled PCL functions

PAT312, Section 15, December 2006 S15-5 Copyright 2007 MSC.Software Corporation NON-SPATIAL FIELDS l Non-Spatial Fields – Variation of the Field with respect to: l Time l Frequency l User-defined mix of allowable independent variables and compiled PCL functions

PAT312, Section 15, December 2006 S15-6 Copyright 2007 MSC.Software Corporation SPATIAL FIELD EXAMPLE PCL / SCALAR / REAL SPACE l Describe a variable thickness for a plate model l Thickness varies: l 0.2 at the leading edge (T=0) l 0.6 at the trailing edge (T=1.57) l As a function of SIN, where Theta varies from 0 to 90 degrees Thick = SINR(T)

PAT312, Section 15, December 2006 S15-7 Copyright 2007 MSC.Software Corporation SPATIAL FIELD – PCL INPUT l PCL expressions can be defined with up to 3 spatial variables l The following variables are recognized as part of your PCL function: l Variables are case sensitive l Precede all variables with a single () quote – not back quote Mathematical ExpressionPCL Expression Rectangular0.1x y0.1*X – 0.3*Y Cylindrical 0.35r acos(25.6z) 0.35*R *T*acosr(25.6*Z) Spherical 200r *R**2 – P**3 Parametric – *C1 – 20.8*C2 SpatialNon-Spatial Coordinate Frame RectangularXYZTimet CylindricalRTZFrequencyf SphericalRTP ParametricC1 C2 C3

PAT312, Section 15, December 2006 S15-8 Copyright 2007 MSC.Software Corporation PCL MATH FUNCTIONS l SIND (angle) l SINR (angle) l ASIND (n) l ASINR (n) l COSD (n) l COSR (n) l ACOSD (n) l ACOSR (n) l TAND (angle) l TANR (angle) l ATAND (n) l ATANR (n) l ATAN2D (y, x) l ATAN2R (y, x) l SQRT (n) l LN (n) l EXP (n) l LOG (n) l ABS (n) l SIGN (n) l NINT (n) l MAX (n1, n2, …) l MIN (n1, n2, …) Note: T and P are in radians for cylindrical and spherical coordinate systems (e.g use SINR(T)) Where: R = angle specified in radians

PAT312, Section 15, December 2006 S15-9 Copyright 2007 MSC.Software Corporation SPATIAL FIELD EXAMPLE Tabular Input/Parametric Space/Endpoints Only Off l Define a piecewise linearly varying filed in Parametric Space to represent thickness of Surface 1

PAT312, Section 15, December 2006 S15-10 Copyright 2007 MSC.Software Corporation SHOWING FIELD DATA l Fields may be shown with an X-Y Plot l One independent variable must be selected

PAT312, Section 15, December 2006 S15-11 Copyright 2007 MSC.Software Corporation

PAT312, Section 15, December 2006 S15-12 Copyright 2007 MSC.Software Corporation