Hi Everyone,
I recently converted my Abaqus inp file to a CalculiX inp file manually, using PrePoMax. However, I've noticed significant differences in the frequency results. In Abaqus, the frequency for Mode 1 was 80, whereas in CalculiX, it's only 0.0042. I suspect that the contact pairs may not be functioning as expected, as the components seem to be displacing from where the contact pairs were defined.
I've attached my code and a snippet of the results for reference. Could someone please offer assistance on this matter? Your help would be greatly appreciated.
Thank you!
Code:
** Constraints +++++++++++++++++++++++++++++++++++++++++++++
**
*Tie, Name=Tie-GRO-HSG-1, Position tolerance=0.1
GRO-HSG-1, HSG-GRO-1
*Tie, Name=Tie-GRO-HSG-2, Position tolerance=0.1
GRO-HSG-2, HSG-GRO-2
*Tie, Name=TIE-HU2-KNU, Position tolerance=0.1
HU2-KNU, KNU-HU2
*Tie, Name=TIE-DISC-HU1, Position tolerance=0.1
DISC-HU1, HU1-DISC
**
** Surface interactions ++++++++++++++++++++++++++++++++++++
**
*Surface interaction, Name=PAD-DISC-00
*Surface behavior, Pressure-overclosure=Tabular
0, 0
0.12962157, 0.001
0.31658784, 0.002
0.53376809, 0.003
0.77323442, 0.004
1.03076663, 0.005
1.30367564, 0.006
1.59007313, 0.007
1.88854841, 0.008
2.19800117, 0.009
2.5175453, 0.01
2.84644953, 0.011
3.18409848, 0.012
3.52996592, 0.013
3.88359596, 0.014
4.24458917, 0.015
4.61259225, 0.016
4.98729018, 0.017
5.36839991, 0.018
5.75566563, 0.019
6.14885477, 0.02
6.54775482, 0.021
6.95217078, 0.022
7.36192287, 0.023
7.77684485, 0.024
8.19678239, 0.025
8.62159179, 0.026
9.0511389, 0.027
9.48529809, 0.028
9.92395149, 0.029
10.3669882, 0.03
10.8143037, 0.031
11.2657993, 0.032
11.7213815, 0.033
12.1809618, 0.034
12.6444561, 0.035
13.1117845, 0.036
13.5828709, 0.037
14.0576427, 0.038
14.5360305, 0.039
15.0179681, 0.04
15.5033922, 0.041
15.992242, 0.042
16.4844592, 0.043
16.9799878, 0.044
17.4787743, 0.045
17.9807667, 0.046
18.4859154, 0.047
18.9941725, 0.048
19.5054917, 0.049
20.0198283, 0.05
20.5371394, 0.051
21.0573832, 0.052
21.5805195, 0.053
22.1065094, 0.054
22.6353151, 0.055
23.1669002, 0.056
23.7012291, 0.057
24.2382676, 0.058
24.7779823, 0.059
25.3203409, 0.06
25.8653118, 0.061
26.4128646, 0.062
26.9629696, 0.063
27.5155978, 0.064
28.0707211, 0.065
28.6283122, 0.066
29.1883443, 0.067
29.7507915, 0.068
30.3156284, 0.069
30.8828304, 0.07
31.4523734, 0.071
32.0242338, 0.072
32.5983886, 0.073
33.1748155, 0.074
33.7534926, 0.075
34.3343985, 0.076
34.9175122, 0.077
35.5028133, 0.078
36.0902818, 0.079
36.6798982, 0.08
37.2716434, 0.081
37.8654984, 0.082
38.4614452, 0.083
39.0594655, 0.084
39.659542, 0.085
40.2616572, 0.086
40.8657944, 0.087
41.4719368, 0.088
42.0800684, 0.089
42.6901732, 0.09
43.3022355, 0.091
43.91624, 0.092
44.5321717, 0.093
45.1500157, 0.094
45.7697576, 0.095
46.3913832, 0.096
47.0148784, 0.097
47.6402295, 0.098
48.2674231, 0.099
48.8964458, 0.1
49.5272846, 0.101
50.1599267, 0.102
50.7943595, 0.103
51.4305706, 0.104
52.0685479, 0.105
52.7082793, 0.106
53.349753, 0.107
53.9929574, 0.108
54.6378812, 0.109
55.284513, 0.11
55.9328418, 0.111
56.5828568, 0.112
57.2345471, 0.113
57.8879023, 0.114
58.5429118, 0.115
59.1995656, 0.116
59.8578533, 0.117
60.5177652, 0.118
61.1792914, 0.119
61.8424222, 0.12
62.5071481, 0.121
63.1734597, 0.122
63.8413478, 0.123
64.5108032, 0.124
65.1818169, 0.125
65.85438, 0.126
66.5284838, 0.127
67.2041196, 0.128
67.8812789, 0.129
68.5599532, 0.13
69.2401344, 0.131
69.9218141, 0.132
70.6049843, 0.133
71.2896371, 0.134
71.9757644, 0.135
72.6633586, 0.136
73.3524119, 0.137
74.0429168, 0.138
74.7348658, 0.139
75.4282515, 0.14
76.1230665, 0.141
76.8193036, 0.142
77.5169558, 0.143
78.2160159, 0.144
78.916477, 0.145
79.6183322, 0.146
80.3215747, 0.147
81.0261978, 0.148
81.7321948, 0.149
82.4395592, 0.15
83.1482845, 0.151
83.8583642, 0.152
84.569792, 0.153
85.2825616, 0.154
85.9966668, 0.155
86.7121016, 0.156
87.4288597, 0.157
88.1469352, 0.158
88.8663223, 0.159
89.5870149, 0.16
90.3090072, 0.161
91.0322936, 0.162
91.7568684, 0.163
92.4827258, 0.164
93.2098604, 0.165
93.9382666, 0.166
94.6679389, 0.167
95.398872, 0.168
96.1310605, 0.169
96.8644992, 0.17
97.5991827, 0.171
98.335106, 0.172
99.0722638, 0.173
99.8106511, 0.174
100.550263, 0.175
101.291094, 0.176
102.03314, 0.177
102.776395, 0.178
103.520855, 0.179
104.266516, 0.18
105.013371, 0.181
105.761417, 0.182
106.510649, 0.183
107.261062, 0.184
108.012652, 0.185
108.765414, 0.186
109.519344, 0.187
110.274437, 0.188
111.030689, 0.189
111.788095, 0.19
112.546652, 0.191
113.306354, 0.192
114.067198, 0.193
114.829179, 0.194
115.592294, 0.195
116.356537, 0.196
117.121906, 0.197
117.888395, 0.198
118.656002, 0.199
119.424721, 0.2
120.194549, 0.201
120.965482, 0.202
121.737516, 0.203
122.510648, 0.204
123.284873, 0.205
124.060187, 0.206
124.836587, 0.207
125.61407, 0.208
126.39263, 0.209
127.172266, 0.21
127.952972, 0.211
128.734746, 0.212
129.517584, 0.213
130.301482, 0.214
131.086437, 0.215
131.872445, 0.216
132.659503, 0.217
133.447608, 0.218
134.236755, 0.219
135.026942, 0.22
135.818165, 0.221
136.610421, 0.222
137.403706, 0.223
138.198018, 0.224
138.993352, 0.225
139.789707, 0.226
140.587078, 0.227
141.385462, 0.228
142.184856, 0.229
142.985258, 0.23
143.786663, 0.231
144.58907, 0.232
145.392473, 0.233
146.196872, 0.234
147.002262, 0.235
147.808642, 0.236
148.616006, 0.237
149.424354, 0.238
150.233681, 0.239
151.043985, 0.24
151.855263, 0.241
152.667512, 0.242
153.480729, 0.243
154.294912, 0.244
155.110057, 0.245
155.926162, 0.246
156.743224, 0.247
157.561241, 0.248
158.380209, 0.249
159.200125, 0.25
160.020988, 0.251
160.842794, 0.252
161.665541, 0.253
162.489226, 0.254
163.313846, 0.255
164.139399, 0.256
164.965882, 0.257
165.793294, 0.258
166.62163, 0.259
167.450888, 0.26
168.281067, 0.261
169.112163, 0.262
169.944175, 0.263
170.777099, 0.264
171.610932, 0.265
172.445674, 0.266
173.281321, 0.267
174.11787, 0.268
174.95532, 0.269
175.793668, 0.27
176.632912, 0.271
177.473049, 0.272
178.314077, 0.273
179.155994, 0.274
179.998796, 0.275
180.842483, 0.276
181.687052, 0.277
182.5325, 0.278
183.378826, 0.279
184.226026, 0.28
185.074099, 0.281
185.923043, 0.282
186.772855, 0.283
187.623533, 0.284
188.475075, 0.285
189.327479, 0.286
190.180743, 0.287
191.034864, 0.288
191.889841, 0.289
192.745671, 0.29
193.602352, 0.291
194.459883, 0.292
195.31826, 0.293
196.177483, 0.294
197.037548, 0.295
197.898455, 0.296
198.7602, 0.297
199.622782, 0.298
200.4862, 0.299
201.35045, 0.3
*Gap conductance
0
*Friction
0.0001, 100000
*Surface interaction, Name=BPO-HSG
*Surface behavior, Pressure-overclosure=Tied
10000000
*Gap conductance
0
*Friction
0.2, 100000
*Surface interaction, Name=GRO-CRR-1
*Surface behavior, Pressure-overclosure=Tied
10000000
*Gap conductance
0
*Friction
0.04, 100000
*Surface interaction, Name=PAD-DISC
*Surface behavior, Pressure-overclosure=Tabular
0, 0
0.0013712, 0.001
0.00335748, 0.002
0.00595885, 0.003
0.0091753, 0.004
0.01300682, 0.005
0.01745344, 0.006
0.02251513, 0.007
0.0281919, 0.008
0.03448376, 0.009
0.0413907, 0.01
0.04891272, 0.011
0.05704982, 0.012
0.06580201, 0.013
0.07516928, 0.014
0.08515162, 0.015
0.09574906, 0.016
0.10696157, 0.017
0.11878916, 0.018
0.13123184, 0.019
0.1442896, 0.02
0.15796244, 0.021
0.17225036, 0.022
0.18715337, 0.023
0.20267146, 0.024
0.21880462, 0.025
0.23555288, 0.026
0.25291621, 0.027
0.27089462, 0.028
0.28948812, 0.029
0.3086967, 0.03
0.32852036, 0.031
0.3489591, 0.032
0.37001293, 0.033
0.39168184, 0.034
0.41396582, 0.035
0.4368649, 0.036
0.46037905, 0.037
0.48450828, 0.038
0.5092526, 0.039
0.534612, 0.04
0.56058648, 0.041
0.58717604, 0.042
0.61438069, 0.043
0.64220042, 0.044
0.67063522, 0.045
0.69968512, 0.046
0.72935009, 0.047
0.75963014, 0.048
0.79052528, 0.049
0.8220355, 0.05
0.8541608, 0.051
0.88690118, 0.052
0.92025665, 0.053
0.9542272, 0.054
0.98881282, 0.055
1.02401354, 0.056
1.05982933, 0.057
1.0962602, 0.058
1.13330616, 0.059
1.1709672, 0.06
1.20924332, 0.061
1.24813452, 0.062
1.28764081, 0.063
1.32776218, 0.064
1.36849862, 0.065
1.40985016, 0.066
1.45181677, 0.067
1.49439846, 0.068
1.53759524, 0.069
1.5814071, 0.07
1.62583404, 0.071
1.67087606, 0.072
1.71653317, 0.073
1.76280536, 0.074
1.80969262, 0.075
1.85719498, 0.076
1.90531241, 0.077
1.95404492, 0.078
2.00339252, 0.079
2.0533552, 0.08
2.10393296, 0.081
2.1551258, 0.082
2.20693373, 0.083
2.25935674, 0.084
2.31239482, 0.085
2.366048, 0.086
2.42031625, 0.087
2.47519958, 0.088
2.530698, 0.089
2.5868115, 0.09
2.64354008, 0.091
2.70088374, 0.092
2.75884249, 0.093
2.81741632, 0.094
2.87660522, 0.095
2.93640922, 0.096
2.99682829, 0.097
3.05786244, 0.098
3.11951168, 0.099
3.181776, 0.1
3.2446554, 0.101
3.30814988, 0.102
3.37225945, 0.103
3.4369841, 0.104
3.50232382, 0.105
3.56827864, 0.106
3.63484853, 0.107
3.7020335, 0.108
3.76983356, 0.109
3.8382487, 0.11
3.90727892, 0.111
3.97692422, 0.112
4.04718461, 0.113
4.11806008, 0.114
4.18955062, 0.115
4.26165626, 0.116
4.33437697, 0.117
4.40771276, 0.118
4.48166364, 0.119
4.5562296, 0.12
4.63141064, 0.121
4.70720676, 0.122
4.78361797, 0.123
4.86064426, 0.124
4.93828562, 0.125
5.01654208, 0.126
5.09541361, 0.127
5.17490022, 0.128
5.25500192, 0.129
5.3357187, 0.13
5.41705056, 0.131
5.4989975, 0.132
5.58155953, 0.133
5.66473664, 0.134
5.74852882, 0.135
5.8329361, 0.136
5.91795845, 0.137
6.00359588, 0.138
6.0898484, 0.139
6.176716, 0.14
6.26419868, 0.141
6.35229644, 0.142
6.44100929, 0.143
6.53033722, 0.144
6.62028022, 0.145
6.71083832, 0.146
6.80201149, 0.147
6.89379974, 0.148
6.98620308, 0.149
7.0792215, 0.15
7.172855, 0.151
7.26710358, 0.152
7.36196725, 0.153
7.457446, 0.154
7.55353982, 0.155
7.65024874, 0.156
7.74757273, 0.157
7.8455118, 0.158
7.94406596, 0.159
8.0432352, 0.16
8.14301952, 0.161
8.24341892, 0.162
8.34443341, 0.163
8.44606298, 0.164
8.54830762, 0.165
8.65116736, 0.166
8.75464217, 0.167
8.85873206, 0.168
8.96343704, 0.169
9.0687571, 0.17
9.17469224, 0.171
9.28124246, 0.172
9.38840777, 0.173
9.49618816, 0.174
9.60458362, 0.175
9.71359418, 0.176
9.82321981, 0.177
9.93346052, 0.178
10.0443163, 0.179
10.1557872, 0.18
*Gap conductance
0
*Friction
0.6, 100000
*Surface interaction, Name=PIS-BPI
*Surface behavior, Pressure-overclosure=Tied
10000000
*Gap conductance
0
*Friction
0.2, 100000
*Surface interaction, Name=GRO-CRR-2
*Surface behavior, Pressure-overclosure=Tied
10000000
*Gap conductance
0
*Friction
0.04, 100000
*Surface interaction, Name=PIS-HSG
*Surface behavior, Pressure-overclosure=Tied
10000000
*Gap conductance
0
*Friction
0.04, 100000
*Surface interaction, Name=PSR-BP
*Surface behavior, Pressure-overclosure=Tied
10000000
*Gap conductance
0
*Friction
0.12, 100000
*Surface interaction, Name=PSR-CRR
*Surface behavior, Pressure-overclosure=Tied
10000000
*Gap conductance
0
*Friction
0.12, 100000
*Surface interaction, Name=RSP-BP
*Surface behavior, Pressure-overclosure=Tied
10000000
*Gap conductance
0
*Friction
0.12, 100000
*Surface interaction, Name=FRICTION03
*Surface behavior, Pressure-overclosure=Tied
10000000
*Gap conductance
0
*Friction
0.3, 100000
*Surface interaction, Name=PSR-CRR-E
*Surface behavior, Pressure-overclosure=Tied
10000000
*Gap conductance
0
*Friction
0.12, 100000
**
** Contact pairs +++++++++++++++++++++++++++++++++++++++++++
**
*Contact pair, Interaction=PAD-DISC, Type=Surface to surface, Adjust=0.1
LII-DISC, DISC-LII
*Contact pair, Interaction=PAD-DISC, Type=Surface to surface, Adjust=0.1
LIO-DISC, DISC-LIO
*Contact pair, Interaction=PIS-BPI, Type=Surface to surface, Adjust=0.1
BPI-PIS-1, PIS-BPI-1
*Contact pair, Interaction=PIS-BPI, Type=Surface to surface, Adjust=0.1
BPI-PIS-2, PIS-BPI-2
*Contact pair, Interaction=PIS-HSG, Type=Surface to surface, Adjust=0
PIS-HSG-1, HSG-PIS-1
*Contact pair, Interaction=PIS-HSG, Type=Surface to surface, Adjust=0
PIS-HSG-2, HSG-PIS-2
*Contact pair, Interaction=PSR-BP, Type=Surface to surface, Adjust=0
PS-BPI-1, BPI-PS-1
*Contact pair, Interaction=PSR-BP, Type=Surface to surface, Adjust=0
PS-BPI-2, BPI-PS-2
*Contact pair, Interaction=PSR-BP, Type=Surface to surface, Adjust=0
PS-BPI-3, BPI-PS-3
*Contact pair, Interaction=PSR-BP, Type=Surface to surface, Adjust=0
PS-BPI-4, BPI-PS-4
*Contact pair, Interaction=PSR-BP, Type=Surface to surface, Adjust=0
PS-BPI-5, BPI-PS-5
*Contact pair, Interaction=PSR-BP, Type=Surface to surface, Adjust=0
PS-BPO-1, BPO-PS-1
*Contact pair, Interaction=PSR-BP, Type=Surface to surface, Adjust=0
PS-BPO-2, BPO-PS-2
*Contact pair, Interaction=PSR-BP, Type=Surface to surface, Adjust=0
PS-BPO-3, BPO-PS-3
*Contact pair, Interaction=PSR-BP, Type=Surface to surface, Adjust=0
PS-BPO-4, BPO-PS-4
*Contact pair, Interaction=RSP-BP, Type=Surface to surface, Adjust=0
PS-BPO-5, BPO-PS-5
*Contact pair, Interaction=PSR-BP, Type=Surface to surface, Adjust=0
PS-BPO-6, BPO-PS-6
*Contact pair, Interaction=PSR-BP, Type=Surface to surface, Adjust=0
PS-BPI-6, BPI-PS-6
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRI-1, CRI-PS-1
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRI-2, CRI-PS-2
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRI-3, CRI-PS-3
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRI-4, CRI-PS-4
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRI-5, CRI-PS-5
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRI-6, CRI-PS-6
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRI-7, CRI-PS-7
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRI-8, CRI-PS-8
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRI-9, CRI-PS-9
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRI-10, CRI-PS-10
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRO-1, CRO-PS-1
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRO-2, CRO-PS-2
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRO-3, CRO-PS-3
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRO-4, CRO-PS-4
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRO-5, CRO-PS-5
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRO-6, CRO-PS-6
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRO-7, CRO-PS-7
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRO-8, CRO-PS-8
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRO-9, CRO-PS-9
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRO-10, CRO-PS-10
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRI-S-1, CRI-PS-S-1
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRI-S-2, CRI-PS-S-2
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRI-S-3, CRI-PS-S-3
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRI-S-4, CRI-PS-S-4
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRO-S-1, CRO-PS-S-1
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRO-S-2, CRO-PS-S-2
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRO-S-3, CRO-PS-S-3
*Contact pair, Interaction=PSR-CRR, Type=Surface to surface, Adjust=0
PS-CRO-S-4, CRO-PS-S-4
*Contact pair, Interaction=PSR-CRR-E, Type=Node to surface, Small sliding, Adjust=0
PS-CRI-1-E, CRI-PS-1
*Contact pair, Interaction=PSR-CRR-E, Type=Node to surface, Small sliding, Adjust=0
PS-CRI-2-E, CRI-PS-2
*Contact pair, Interaction=PSR-CRR-E, Type=Node to surface, Small sliding, Adjust=0
PS-CRI-6-E, CRI-PS-6
*Contact pair, Interaction=PSR-CRR-E, Type=Node to surface, Small sliding, Adjust=0
PS-CRI-7-E, CRI-PS-7
*Contact pair, Interaction=PSR-CRR-E, Type=Node to surface, Small sliding, Adjust=0
PS-CRO-1-E, CRO-PS-1
*Contact pair, Interaction=PSR-CRR-E, Type=Node to surface, Small sliding, Adjust=0
PS-CRO-2-E, CRO-PS-2
*Contact pair, Interaction=PSR-CRR-E, Type=Node to surface, Small sliding, Adjust=0
PS-CRO-6-E, CRO-PS-6
*Contact pair, Interaction=PSR-CRR-E, Type=Node to surface, Adjust=0
PS-CRO-7-E, CRO-PS-7
*Contact pair, Interaction=RSP-BP, Type=Node to surface, Small sliding, Adjust=0
RSP-BPI-1, BPI-RSP-1
*Contact pair, Interaction=RSP-BP, Type=Node to surface, Small sliding, Adjust=0
RSP-BPI-2, BPI-RSP-2
*Contact pair, Interaction=RSP-BP, Type=Node to surface, Small sliding, Adjust=0
RSP-BPO-1, BPO-RSP-1
*Contact pair, Interaction=RSP-BP, Type=Node to surface, Small sliding, Adjust=0
RSP-BPO-2, BPO-RSP-2
*Contact pair, Interaction=BPO-HSG, Type=Surface to surface, Adjust=0.1
BPO-HSG, HSG-BPO
*Contact pair, Interaction=GRO-CRR-1, Type=Surface to surface, Adjust=0
GRO-CRR-1, CRR-GRO-1
*Contact pair, Interaction=GRO-CRR-2, Type=Surface to surface, Adjust=0
GRO-CRR-2, CRR-GRO-2
**
**
**
** Step-1 ++++++++++++++++++++++++++++++++++++++++++++++++++
**
*Step
*Frequency, Solver=Spooles
10
**
** Output frequency ++++++++++++++++++++++++++++++++++++++++
**
*Output, Frequency=1
**
** Boundary conditions +++++++++++++++++++++++++++++++++++++
**
*Boundary, op=New
** Name: Fixed-1
*Boundary
KNU-FIX, 1, 6, 0
**
**
*Node file
U
*OUTPUT, FIELD, VARIABLE = PRESELECT
**
** End step ++++++++++++++++++++++++++++++++++++++++++++++++
**
*End step
Please put the code in the Preformatted text tag (</> button when editing a post), will be much easier to read.
Can you share the whole input file with the mesh ? You could use some hosting website to share it.
Dear Mr. @Calc_em
I’ve formatted my code as per your request. Please review it at your convenience. Your assistance in this matter would be greatly appreciated.
Thank you.
Since it’s a frequency analysis, nonlinear contact won’t work as expected. It will be considered “frozen” and thus will work like a tie constraint.
The whole .inp or .pmx file would be useful. Please upload it on some hosting website like Google Drive, Dropbox or WeTransfer and share the link here.
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Dear @Calc_em But it is working fine in Abaqus. So, is it limitation of Calculix ?
I will share file with you, but before that I need to take permission from my sir.
0.0042 clearly looks like a free body mode.
You could try to activate the PERTURBATION parameter inside the frequency analisys window.
Then remove any load or BC apart from contacts. Perform a new Frequency analysis. Resquest like 20 modes. Check the Strain energy of the different modes. You will clearly see which contacts are failing or might be performing poorly.
Hello Mr. Disla, thank you for your time.
Could you kindly elucidate the concept of defining the “PERTURBATION parameter” within frequency analysis window? I would appreciate a detailed explanation.
Did you mean first define Frequency step followed by PERTURBATION parameter??
By window I was thinking in the Prepomax analisys window.
If you are writing your inp PERTURBATION goes it with the Step card.
*Step,PERTURBATION
*Frequency, Solver=Spooles
10
Should be enough to activate the contacts.
By other hand I agree with Calc_em. Frequency is a linear analysis. Nonlinear contact will be considered “frozen” and thus will work like a tie constraint.
Check results carefully. Even in Abaqus. I’m don’t know what your results mean there.
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Abaqus also treats contacts as frozen in frequency analyses which means that their states can’t change as it’s possible in nonlinear simulations.
But you then need a static step to freeze the contact state, right? afterwards you can perform the frequency step which is a perturbation step. I can’t see the static step in the input file.
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