Hi

I wrote a python code to draw a spline in Abaqus. When i run the Python code, there is this error :

"This sketch contains a spline that is not a parabola(the spline has more than three vertices).

Analytical rigid surface 2D planar feature failed"

Would you please help me to resolve this error.

This is my Python code:

#

# Getting Started with Abaqus

#

from abaqus import *

from abaqusConstants import *

import part

import math

import sketch

session.viewports['Viewport: 1'].makeCurrent()

session.viewports['Viewport: 1'].maximize()

session.journalOptions.setValues(replayGeometry=COORDINATE,

recoverGeometry=COORDINATE)

from caeModules import *

from driverUtils import executeOnCaeStartup

executeOnCaeStartup()

Mdb()

mdb.models.changeKey(fromName='Model-1', toName='standard')

##

## Sketch profile of punch

##

s0 = mdb.models['standard'].ConstrainedSketch(name='__profile__', sheetSize=50)

x2Max = 3.0

points = []

for i in range(100):

x2 = (float(i)/99)*x2Max

y2 = 10/3*math.sqrt(9-x2**2)

points.append([x2,y2])

s0.Spline(points=points)

session.viewports['Viewport: 1'].view.fitView()

mdb.models['standard'].ConstrainedSketch(name='Punch', objectToCopy=s0)

p = mdb.models['standard'].Part(name='Punch', dimensionality=TWO_D_PLANAR,

type=ANALYTIC_RIGID_SURFACE)

p = mdb.models['standard'].parts['Punch']

p.AnalyticRigidSurf2DPlanar(sketch=s0)

p = mdb.models['standard'].parts['Punch']

session.viewports['Viewport: 1'].setValues(displayedObject=p)

del mdb.models['standard'].sketches['__profile__']