-
Notifications
You must be signed in to change notification settings - Fork 1
/
ShelBDF.py
150 lines (104 loc) · 3.92 KB
/
ShelBDF.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
# -*- coding: utf-8 -*-
"""
Created on Tue Sep 10 15:41:18 2013
Description: Script to gcon shel bdf files to flex format
Date: June 1st 2015
Author: Gerry Harvey
"""
# get filename from user - hardcode for now
# Later this will launch a dialog for browsing files
name = "CarCoarse"
ext = ".bdf"
filename = name + ext
# Open newfile for nodes and elements
nodeOUT = open("nodes.txt", "w")
shelOUT = open("shel.txt", "w")
glueOUT = open("glue.txt", "w")
# No need to close, but may help clashes when switching open mode
nodeOUT.close()
shelOUT.close()
glueOUT.close()
# read current BDF file
fileIN = open (filename, "r")
# Get number of lines in file - not needed
num_lines = sum(1 for line in open(filename))
# Open files needed for output formats
nodeOUT = open("nodes.txt", "a")
shelOUT = open("shel.txt", "a")
glueOUT = open("glue.txt", "a")
# Set number of characters in columns
n = 8
# Logic for parsing file
while True:
# Update current line
lineNow = fileIN.readline()
# Get X Y Z node locations from GRID
if (lineNow.startswith('GRID')):
# Perform 'free-form' or 'short form' check
if "," in lineNow:
# Create list of strings on line
nodeLoc = lineNow.split(',')
nitems = len(nodeLoc)
else:
nodeLoc = [lineNow[i:i+n] for i in range(0, len(lineNow), n)]
nitems = len(nodeLoc)
i = 1
for i in range(1,nitems):
# Strip Whitespace from strings
nodeLoc[i] = nodeLoc[i].lstrip()
# Justify strings correctly for formatting
nodeLoc[i] = nodeLoc[i].rjust(8)
i = i+1
# extract node number, X, Y and Z loc - real numbers
nodeNum = float(nodeLoc[1]); int(nodeNum)
xLoc = float(nodeLoc[3])
yLoc = float(nodeLoc[4])
zLoc = float(nodeLoc[5])
# Write Out Node List
nodeOUT.write('\t%s %d %f %f %f\n' \
%("gcon",nodeNum, xLoc, yLoc, zLoc) )
# Get nodes and materials for Quad Shells
elif (lineNow.startswith('CQUAD4')):
# Perform 'free-form' or 'short form' check
if "," in lineNow:
quadElm = lineNow.split(',')
else:
quadElm = [lineNow[i:i+n] for i in range(0, len(lineNow), n)]
# Extract Node number, material and 1st 4 nodes
quadNum = int(quadElm[1])
matNum = int(quadElm[2])
node1 = int(quadElm[3])
node2 = int(quadElm[4])
node3 = int(quadElm[5])
node4 = int(quadElm[6])
# Write out Element list
shelOUT.write('\t%s %s %d %d %d %d\n' \
%("gcon", "mbrn", node1, node2, node3, node4) )
# Write out Glue list
glueOUT.write('\t%s %s %d %d %d %d\n' \
%("master", "surf", node1, node2, node3, node4) )
elif (lineNow.startswith('CTRIA3')):
# Perform 'free-form' or 'short form' check
if "," in lineNow:
quadElm = lineNow.split(',')
else:
quadElm = [lineNow[i:i+n] for i in range(0, len(lineNow), n)]
# Extract Node number, material and 1st 4 nodes
quadNum = int(quadElm[1])
matNum = int(quadElm[2])
node1 = int(quadElm[3])
node2 = int(quadElm[4])
node3 = int(quadElm[5])
node4 = int(quadElm[5])
# Write out Element list
shelOUT.write('\t%s %s %d %d %d %d\n' \
%("gcon", "mbrn", node1, node2, node3, node4) )
# Write out Glue list
glueOUT.write('\t%s %s %d %d %d %d\n' \
%("master", "surf", node1, node2, node3, node4) )
if not lineNow: break #EOF
# while loops end - close all
fileIN.close()
nodeOUT.close()
shelOUT.close()
glueOUT.close()