CHAIR2

MESH:

Entity Size

Nodes 41988

Elements 148216

ELEMENT TYPE:

Connectivity Statistics

TE10 5025 ( 3.39% )

NSBAR 4 ( 0.00% )

SPIDER 8 ( 0.01% )

TE4 143179 ( 96.60% )

ELEMENT QUALITY:

Criterion Good Poor Bad Worst Average

Stretch 148204 ( 100.00% ) 0 ( 0.00% ) 0 ( 0.00% ) 0.316 0.641

Aspect Ratio 140933 ( 95.09% ) 7271 ( 4.91% ) 0 ( 0.00% ) 3.974 1.845

Materials.1

Material Dark Oak

Young's modulus 1.23e+010N_m2

Poisson's ratio 0

Density 769kg_m3

Coefficient of thermal expansion 0_Kdeg

Yield strength 0N_m2

 Material Bright Oak

Young's modulus 1.32e+010N_m2

Poisson's ratio 0

Density 735kg_m3

Coefficient of thermal expansion 0_Kdeg

Yield strength 0N_m2

Static Case

Boundary Conditions

Figure 1

STRUCTURE Computation

Number of nodes : 41988

Number of elements : 148216
Number of D.O.F. : 125988
Number of Contact relations : 0
Number of Kinematic relations : 525
Number of coefficients : 1718
 Parabolic tetrahedron : 5025
Linear tetrahedron : 143179
Translation rigid spider : 8
Rigid spider : 4

RESTRAINT Computation
Name: Restraints.1

Number of S.P.C : 5265

LOAD Computation

Name: Loads.1

Applied load resultant :

Fx = -5 . 323e-014 N
Fy = -4 . 543e-015 N
Fz = -1 . 334e+003 N
Mx = -5 . 229e+002 Nxm
My = 1 . 623e+003 Nxm
Mz = 1 . 556e-014 Nxm

STIFFNESS Computation

Number of lines : 125988

Number of coefficients : 2923545
Number of blocks : 6
Maximum number of coefficients per bloc : 499998
Total matrix size : 33 . 94 Mb

SINGULARITY Computation
Restraint: Restraints.1

Number of local singularities : 0

Number of singularities in translation : 0
Number of singularities in rotation : 0
Generated constraint type : MPC
 CONSTRAINT Computation
Restraint: Restraints.1

Number of constraints : 5790

Number of coefficients : 0
Number of factorized constraints : 5790
Number of coefficients : 1193
Number of deferred constraints : 0

FACTORIZED Computation

Method : SPARSE
Number of factorized degrees : 120198
Number of supernodes : 4646
Number of overhead indices : 548475
Number of coefficients : 31414008
Maximum front width : 1977
Maximum front size : 1955253
Size of the factorized matrix (Mb) : 239 . 67
Number of blocks : 16
Number of Mflops for factorization : 1 . 819e+004
Number of Mflops for solve : 1 . 263e+002
Minimum relative pivot : 7 . 452e-004

Minimum and maximum pivot

Value Dof Node x (mm) y (mm) z (mm)

1.7915e+005 Tx 41492 1.2764e+003 -6.0061e+001 3.9721e+002

2.0401e+009 Tx 8491 1.6549e+003 2.2951e+002 7.1164e+001

8.6875e+007 Ry 41984 1.5212e+003 2.5412e+002 -5.0477e+001

3.1721e+008 Rx 41981 1.5212e+003 5.0884e+002 -5.2832e+001

Minimum pivot

Value Dof Node x (mm) y (mm) z (mm)

6.3525e+005 Ty 41492 1.2764e+003 -6.0061e+001 3.9721e+002

9.3902e+005 Ty 41804 1.0347e+003 -1.9094e+002 6.8164e+002

9.3984e+005 Ty 41806 1.0356e+003 -1.8646e+002 6.9853e+002

9.9944e+005 Ty 30163 1.4608e+003 -3.8244e+001 -2.2520e+002

 1.0256e+006 Tz 30163 1.4608e+003 -3.8244e+001 -2.2520e+002

1.0266e+006 Tx 29079 9.7964e+002 8.0442e+001 1.0921e+001

1.0380e+006 Tz 41806 1.0356e+003 -1.8646e+002 6.9853e+002

1.0443e+006 Tz 30165 1.4314e+003 -4.7706e+001 -2.0207e+002

1.0508e+006 Ty 30165 1.4314e+003 -4.7706e+001 -2.0207e+002

Value Dof Node x (mm) y (mm) z (mm)

1.0661e+008 Rz 41984 1.5212e+003 2.5412e+002 -5.0477e+001

1.2236e+008 Rx 41984 1.5212e+003 2.5412e+002 -5.0477e+001

1.3175e+008 Ry 41987 9.1158e+002 5.0729e+002 -5.2856e+001

1.8322e+008 Rz 41987 9.1158e+002 5.0729e+002 -5.2856e+001

1.8483e+008 Rx 41987 9.1158e+002 5.0729e+002 -5.2856e+001

2.5704e+008 Ry 41986 9.1158e+002 2.5413e+002 -5.1848e+001

2.7123e+008 Rz 41986 9.1158e+002 2.5413e+002 -5.1848e+001

2.8230e+008 Rx 41986 9.1158e+002 2.5413e+002 -5.1848e+001

2.9816e+008 Rz 41981 1.5212e+003 5.0884e+002 -5.2832e+001

Translational pivot distribution

Value Percentage

10.E5 --> 10.E6 4.1602e-003

10.E6 --> 10.E7 1.4977e-002

10.E7 --> 10.E8 1.2772e+000

10.E8 --> 10.E9 8.2807e+001

10.E9 --> 10.E10 1.5896e+001

Rotational pivot distribution

Value Percentage

10.E7 --> 10.E8 8.3333e+000

10.E8 --> 10.E9 9.1667e+001

DIRECT METHOD Computation

 Name: Static Case Solution.1

Restraint: Restraints.1

Load: Loads.1

Strain Energy : 1.175e-003 J

Equilibrium

Relative
Applied
Components Reactions Residual Magnitude
Forces
Error

-2.0834e- 1.3480e-
Fx (N) -5.3228e-014 -2.0780e-011
011 013

-4.2376e- 2.7418e-
Fy (N) -4.5429e-015 -4.2371e-011
011 013

-6.2755e- 4.0604e-
Fz (N) -1.3345e+003 1.3345e+003
011 013

5.3433e- 2.0349e-
Mx (Nxm) -5.2289e+002 5.2289e+002
012 014

8.1627e- 3.1086e-
My (Nxm) 1.6232e+003 -1.6232e+003
011 013

-1.9102e- 7.2744e-
Mz (Nxm) 1.5563e-014 -1.9117e-011
011 014

Static Case Solution.1 - Deformed mesh.2

 Figure 2

On deformed mesh ---- On boundary ---- Over all the model

Static Case Solution.1 - Von Mises stress (nodal values).2

 Figure 3

1D elements: : Components: : All

3D elements: : Components: : All

On deformed mesh ---- On boundary ---- Over all the model

Global Sensors

Sensor Name Sensor Value

Energy 0.001J

Global Error Rate (%) 32.278781891