pycufsm.pre.cutwp
=================

.. py:module:: pycufsm.pre.cutwp


Functions
---------

.. autoapisummary::

   pycufsm.pre.cutwp.prop2_new
   pycufsm.pre.cutwp.prop2


Module Contents
---------------

.. py:function:: prop2_new(nodes: pycufsm._types.ArrayLike, elements: Sequence[pycufsm._types.New_Element]) -> pycufsm._types.Sect_Props

   Run a CUTWP analysis using the new format for nodes and elements

   Args:
       nodes (ArrayLike): Nodal coordinates
           | `[[x, y], ...]`
           Note that any extra columns (such as a third column for stresses),
           will simply be ignored.
       elements (Sequence[New_Element]): Element definition
           | [{
           |    nodes: "all"|[node1, ...],
           |    t: thickness,
           |    mat: mat_name
           | }]
           How the nodes are connected. The material name will be ignored.

   Returns:
       sect_props(Sect_Props): Dictionary of section properties


.. py:function:: prop2(coord: numpy.ndarray, ends: numpy.ndarray) -> pycufsm._types.Sect_Props

   Function modified for use in CUFSM by Ben Schafer in 2004 with permission
   of Sarawit. removed elastic buckling calcs and kept only section
   properties.

   Compute cross section properties
       This function computes the cross section properties: area, centroid,
       moment of inertia, torsional constant, shear center, warping constant,
       B1_vals, B2_vals, elastic critical buckling load and the deformed buckling shape

   Args:
       coord (np.ndarray): node i's coordinates
           coord(i,1) = X coordinate
           coord(i,2) = Y coordinate
       ends (np.ndarray): subelement i's nodal information
           ends(i,1) = start node #
           ends(i,2) = finish node #
           ends(i,3) = element's thicknesses

   Returns:
       sect_props (Sect_Props): Dictionary of section properties:
           A              ==  cross section area
           xc             ==  X coordinate of the centroid from origin
           yc             ==  Y coordinate of the centroid from origin
           Ix             ==  moment of inertia about centroid X axes
           Iy             ==  moment of inertia about centroid Y axes
           Ixy            ==  product of inertia about centroid
           Iz             ==  polar moment of inertia about centroid
           theta          ==  rotation angle for the principal axes
           I1             ==  principal moment of inertia about centroid 1 axes
           I2             ==  principal moment of inertia about centroid 2 axes
           J              ==  torsional constant
           xo             ==  X coordinate of the shear center from origin
           yo             ==  Y coordinate of the shear center from origin
           Cw             ==  warping constant
           B1             ==  int(y*(x^2+y^2),s,0,lengths)   *BWS, x,y=prin. crd.
           B2             ==  int(x*(x^2+y^2),s,0,lengths)
                               where: x = x_1+s/lengths*(x_2-x_1)
                                   y = y_1+s/lengths*(y_2-y_1)
                                   lengths = length of the element

       Note:
       J,xo,yo,Cw,B1,B2,Pe,dcoord is not computed for close-section

   Andrew T. Sarawit, Wed 10/25/01
   BWS, 2004
   BWS, Aug 2005: additional modifications, program only handles
       singly-branched open sections, or single cell closed sections, arbitrary
       section designation added for other types.
   BWS, Dec 2006 bug fixes to B1_vals B2_vals
   BWS, Dec 2015 extended to not crash on disconnected and arbitrary sections