MS的forcite模塊計算楊氏模量求助
在做一個高聚物材料的楊氏模量計算，但是計算出來的結果小的可憐，材料真實楊氏模量為2.5Gpa，計算出的結果只有零點零幾，圖片附上參數(shù)設置和計算出來的剛性表，懇求各位老師幫忙看看問題出在哪里，先謝謝各位老師了
參數(shù)設置
計算結果
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你看的結果是剛度矩陣，在往下找，有模量的計算結果。包括三個方向的模量。
老師，三個方向上的楊氏模量也很小，還有Lambda = -0.2530 Mu = 0.1845，也只有這么多
Forcite
-------
Task : Mechanical Properties
Version : 2018
Build date : Nov 21 2017
Host : localhost.localdomain
Threads : Parallel 18
Operating system : linux
Task started : Mon Mar 15 17:08:51 2021
---- Mechanical properties parameters ----
Calculation method : Constant strain
Number of strains : 6
Maximum strain : 3.000e-003
Pre-optimize structure : YES
---- Geometry optimization parameters ----
Algorithm : Smart
Convergence tolerance:
Energy : 2e-005 kcal/mol
Force : 0.001 kcal/mol/A
Stress : 0.001 GPa
Displacement : 1e-005 A
Maximum number of iterations : 1000
External pressure : 0 GPa
Motion groups rigid : NO
Optimize cell : NO
---- Energy parameters ----
Forcefield : COMPASS (Version 2.8)
Charges : Forcefield assigned
Electrostatic terms:
Summation method : Ewald
Accuracy : 0.0001 kcal/mol
Buffer width : 0.5 A
van der Waals terms:
Summation method : Atom based
Truncation method : Cubic spline
Cutoff distance : 15.5 A
Spline width : 1 A
Long range correction : YES
Buffer width : 0.5 A
Energy contributors using automatic parameters:
Bond Stretch : (o2e o2e)
Angle Bend : (c3a o2e o2e)
Torsion : (c3a o2e o2e c3a), (c3a c3a o2e o2e)
---- Geometry optimization ----
Energy units : kcal/mol
Frame Converged Total Non-bond H-bond van der Waals Electrostatic 3-Body Diagonal Bond Angle Torsion Inversion Cross terms
1 No 12597.153 -3237.558 0.000 1070.820 -4297.728 0.000 18696.470 1505.426 678.518 16505.226 7.301 -2861.759
2 No 12428.673 -3459.637 0.000 868.495 -4317.054 0.000 18758.299 1511.841 681.593 16555.577 9.287 -2869.989
3 No 12181.749 -3737.291 0.000 590.638 -4316.602 0.000 18783.913 1509.308 683.576 16578.946 12.083 -2864.874
4 No 11926.650 -4000.744 0.000 355.140 -4344.306 0.000 18788.697 1508.029 690.029 16576.533 14.107 -2861.304
5 No 11729.432 -4227.427 0.000 130.532 -4346.133 0.000 18818.402 1507.643 690.803 16605.252 14.704 -2861.543
6 No 11605.433 -4360.121 0.000 -22.497 -4325.509 0.000 18825.732 1508.248 706.353 16595.598 15.533 -2860.177
7 No 11423.015 -4543.334 0.000 -158.718 -4372.125 0.000 18825.372 1507.882 700.825 16600.937 15.728 -2859.023
8 No 11279.289 -4712.905 0.000 -302.219 -4397.776 0.000 18850.386 1508.430 705.193 16618.769 17.995 -2858.191
9 No 11168.955 -4826.279 0.000 -416.381 -4396.417 0.000 18850.476 1506.557 707.736 16618.347 17.836 -2855.242
10 No 11022.287 -4978.102 0.000 -560.968 -4403.046 0.000 18855.842 1506.753 704.987 16626.227 17.876 -2855.454
11 No 10947.747 -5066.421 0.000 -658.193 -4393.649 0.000 18869.748 1507.896 706.855 16635.646 19.351 -2855.580
12 No 10848.806 -5175.808 0.000 -734.130 -4426.577 0.000 18882.104 1510.018 703.357 16649.562 19.167 -2857.491
13 No 10787.651 -5239.744 0.000 -802.082 -4422.022 0.000 18885.235 1509.596 708.387 16647.378 19.874 -2857.840
14 No 10726.966 -5308.868 0.000 -851.186 -4441.527 0.000 18891.797 1508.237 707.013 16656.261 20.286 -2855.963
15 No 10640.132 -5412.937 0.000 -919.047 -4476.955 0.000 18901.290 1504.770 714.816 16659.858 21.846 -2848.221
16 No 10606.973 -5446.945 0.000 -962.917 -4466.435 0.000 18907.783 1507.886 711.987 16663.926 23.984 -2853.864
17 No 10545.011 -5510.590 0.000 -1027.238 -4464.947 0.000 18911.162 1510.499 719.474 16658.578 22.611 -2855.561
18 No 10549.282 -5524.567 0.000 -1050.379 -4455.089 0.000 18924.374 1506.049 715.602 16675.981 26.742 -2850.525
19 No 10515.951 -5538.202 0.000 -1046.349 -4471.912 0.000 18904.807 1507.079 717.255 16658.302 22.171 -2850.654
20 No 10471.036 -5600.170 0.000 -1097.151 -4481.886 0.000 18923.505 1508.112 714.392 16678.235 22.766 -2852.299
21 No 10394.042 -5683.064 0.000 -1178.939 -4481.846 0.000 18930.856 1509.549 717.396 16681.460 22.451 -2853.750
22 No 10401.138 -5663.152 0.000 -1168.920 -4470.950 0.000 18919.055 1509.289 716.976 16671.772 21.018 -2854.764
23 No 10360.980 -5705.623 0.000 -1201.797 -4479.314 0.000 18919.897 1508.831 722.855 16665.920 22.291 -2853.294
24 No 10362.224 -5683.738 0.000 -1186.812 -4471.588 0.000 18907.608 1512.311 715.516 16658.969 20.811 -2861.645
25 No 10306.436 -5778.741 0.000 -1266.013 -4485.914 0.000 18935.697 1506.875 731.851 16673.159 23.812 -2850.520
26 No 10305.735 -5781.330 0.000 -1272.318 -4481.304 0.000 18938.311 1507.740 723.152 16681.775 25.644 -2851.246
27 No 10278.545 -5790.453 0.000 -1268.588 -4493.576 0.000 18921.223 1507.751 725.168 16664.116 24.188 -2852.224
28 No 10279.957 -5807.809 0.000 -1288.823 -4489.601 0.000 18941.927 1509.026 726.295 16681.696 24.910 -2854.161
29 No 10257.760 -5821.490 0.000 -1309.400 -4481.735 0.000 18929.713 1506.542 722.336 16674.828 26.008 -2850.463
30 No 10251.303 -5825.734 0.000 -1303.761 -4490.521 0.000 18928.628 1506.840 722.998 16673.687 25.103 -2851.591
31 No 10233.874 -5849.848 0.000 -1322.097 -4495.178 0.000 18936.753 1508.266 719.650 16684.105 24.733 -2853.032
32 No 10223.185 -5849.447 0.000 -1300.119 -4515.401 0.000 18927.632 1509.037 722.822 16673.790 21.984 -2855.000
33 No 10213.855 -5866.955 0.000 -1320.101 -4511.121 0.000 18934.950 1508.668 724.318 16679.983 21.980 -2854.139
34 No 10222.048 -5878.639 0.000 -1335.751 -4505.402 0.000 18952.895 1507.992 724.069 16695.975 24.858 -2852.208
35 No 10189.296 -5911.630 0.000 -1367.852 -4503.635 0.000 18955.189 1508.759 727.208 16694.773 24.448 -2854.263
36 No 10162.984 -5950.324 0.000 -1411.220 -4496.659 0.000 18965.895 1508.542 734.096 16696.392 26.865 -2852.588
37 No 10098.735 -6020.198 0.000 -1447.415 -4528.278 0.000 18972.968 1510.546 729.330 16706.803 26.290 -2854.035
38 No 10106.185 -5998.236 0.000 -1448.119 -4503.052 0.000 18960.278 1510.639 728.398 16694.902 26.340 -2855.857
39 No 10066.939 -6061.055 0.000 -1497.913 -4512.512 0.000 18982.787 1511.151 732.553 16711.054 28.028 -2854.793
40 No 10064.208 -6035.572 0.000 -1472.065 -4510.612 0.000 18955.456 1511.697 727.074 16690.676 26.009 -2855.676
41 No 10038.657 -6078.190 0.000 -1517.640 -4504.972 0.000 18972.032 1511.404 734.648 16698.533 27.446 -2855.186
42 No 9975.572 -6140.366 0.000 -1570.961 -4510.033 0.000 18966.981 1507.924 727.386 16704.928 26.742 -2851.043
43 No 9976.820 -6159.458 0.000 -1573.825 -4521.319 0.000 18994.689 1512.463 730.019 16725.592 26.615 -2858.410
---- Mechanical properties ----
Independent elastic constants
i j Cij (GPa) Error (GPa)
1 1 -0.0585 (+/- 0.0753)
1 2 0.1223 (+/- 0.0905)
1 3 0.0122 (+/- 0.0887)
1 4 0.0142 (+/- 0.0884)
1 5 0.0674 (+/- 0.0640)
1 6 -0.0654 (+/- 0.0583)
2 2 0.1317 (+/- 0.1203)
2 3 0.1068 (+/- 0.1145)
2 4 0.1001 (+/- 0.1100)
2 5 0.1093 (+/- 0.0783)
2 6 0.0203 (+/- 0.0705)
3 3 0.2749 (+/- 0.1123)
3 4 0.0291 (+/- 0.1083)
3 5 0.1546 (+/- 0.0769)
3 6 0.0455 (+/- 0.0685)
4 4 0.3517 (+/- 0.1140)
4 5 0.0284 (+/- 0.0749)
4 6 0.0917 (+/- 0.0662)
5 5 0.2369 (+/- 0.0640)
5 6 -0.0385 (+/- 0.0527)
6 6 -0.0351 (+/- 0.0599)
Elastic stiffness constants Cij (GPa), Stress-i = Cij*Strain-j.
-0.0585 0.1223 0.0122 0.0142 0.0674 -0.0654
0.1223 0.1317 0.1068 0.1001 0.1093 0.0203
0.0122 0.1068 0.2749 0.0291 0.1546 0.0455
0.0142 0.1001 0.0291 0.3517 0.0284 0.0917
0.0674 0.1093 0.1546 0.0284 0.2369 -0.0385
-0.0654 0.0203 0.0455 0.0917 -0.0385 -0.0351
Elastic compliance constants Sij (1/TPa), Strain-i = Sij*Stress-j.
-4291.0018 7654.6438 -3048.8885 -2318.2046 293.7224 2083.3073
7654.6438 5096.6728 1799.0517 -498.9792 -6207.3845 -3484.7890
-3048.8885 1799.0517 2688.3975 -2014.9825 -572.6148 5564.6051
-2318.2046 -498.9792 -2014.9825 2027.2977 2589.4290 3871.3794
293.7224 -6207.3845 -572.6148 2589.4290 6259.1846 -4962.3819
2083.3073 -3484.7890 5564.6051 3871.3794 -4962.3819 -11601.9292
Reuss Voigt Hill
Bulk modulus (GPa) = 0.0613 0.0923 0.0768
Shear modulus (GPa) = 0.0000 0.1178 0.0589
Compressibility (1/TPa) = 16303.6825
Young Modulus (GPa) Poisson Ratios
X = -0.2330 Exy = 1.7839 Exz = -0.7105
Y = 0.1962 Eyx = -1.5019 Eyz = -0.3530
Z = 0.3720 Ezx = 1.1341 Ezy = -0.6692
Velocities of sound (Km/s)
X1 = 0.6787 X2 = 0.0878 X3 = 1.0195
Y1 = 0.4716 Y2 = 0.6129 Y3 = 1.2780
Z1 = 0.6317 Z2 = 1.1490 Z3 = 1.3123
Lame constants (GPa) (assuming material is isotropic)
Lambda = -0.2530 Mu = 0.1845
Task terminated : Wed Mar 17 07:51:36 2021
Total CPU time used by Forcite: 38:42:37 hours (139357s)
Termination status : Normal，
老師，我把全部的數(shù)據(jù)發(fā)到樓下了，麻煩您費費心給過過目
請問一下，解決了嗎？我的問題正好反過來了，楊氏模量大了好幾個量級。想了解一下