## 3 Numerical Simulations and Discussion
### Finding of Adjustment Point
#### 3.2.1 Results
Moreover, the maximum relative errors of c7.xx and c7.yy are also almost equal to zero; although, they are bigger than those of k7.xx and k7.yy. They are only 0.223% and 0.0215%, respectively. However, the identification error becomes bigger for some other bearings. For the main stiffness and damping coefficients in the x and y directions, the biggest values of the eight maximum errors occur at #1 bearing. For the main damping coefficients in the x and y directions, they are at #1 bearing and are 14,705% and 42,741%, respectively. (8) #91 point as the last measuring point. When #91 point, which is near #8 bearing, is used, the identification error of #8 bearing coefficients is the smallest among the eight bearings. The maximum relative errors of k8.xx and k8.yy, which are only 1.91 \(\times\) 10\({}^{-7}\)% and 5.98 \(\times\) 10\({}^{-8}\)%, respectively, almost equal zero. Moreover, the maximum relative errors of c8.xx and c8.yy are also almost equal to zero; although, they are bigger than that of k8.xx and k8.yy. They are only 0.00755% and 0.000922%, respectively. However, the identification error becomes bigger for some other bearings. For the main stiffness coefficient in the x direction, the biggest of the eight maximum errors occurs at #3 bearing. For the main damping coefficient in the x direction, the biggest of the maximum errors occurs at #3 bearing. For the main damping coefficient in the x direction, the biggest of the maximum errors is much bigger. It occurs at #2 bearing and is 11,985%. For the main damping coefficient in the y direction, the biggest of the eight maximum errors, which is 10,846%, occurs at #1 bearing. \[A1-Kxx_{g44}=\left[ \begin{array}{cccccccc}&\#1B&\#2B&\#3B&\#4B&\#5B&\#6B&\#7B& \#8B\\ \#14P&5.75\times 10^{-7}&3.85\times 10^{-5}&3.34\times 10^{-5}&0.0127&0.0575&1.19&0.434&0.695\\ \#29P&4.36\times 10^{-6}&2.84\times 10^{-6}&4.16\times 10^{-6}&0.00246&0.0111&0. 235&0.0887&0.204\\ \#33P&3.57\times 10^{-5}&2.00\times 10^{-5}&7.88\times 10^{-6}&0.00074&0.00387&0. 119&0.0735&0.0417\\ \#49P&0.000168&3.33\times 10^{-5}&0.000106&5.59\times 10^{-6}&6.82\times 10^{-5}&0. 000459&0.000974&0.00518\\ \#53P&0.00115&0.000970&0.000390&5.76\times 10^{-5}&5.03\times 10^{-5}&0.00066 &0.000266&0.000255\\ \#69P&0.0229&0.0148&0.0194&2.10\times 10^{-5}&0.000212&8.03\times 10^{-6}&1.82 \times 10^{-5}&2.79\times 10^{-5}\\ \#73P&0.154&0.0769&0.0934&0.000940&0.00237&2.98\times 10^{-5}&5.28\times 10^{-6}&6. 00\times 10^{-6}\\ \#91P&0.0519&0.147&0.211&0.000302&0.00182&0.0001159&4.73\times 10^{-5}&1. 91\times 10^{-7}\\ \end{array} \right] \tag{19}\]  
\[A1-Kyy_{g44}=\left[ \begin{array}{cccccccc}&\#1B&\#2B&\#3B&\#4B&\#5B&\#6B& \#7B&\#8B\\ \#14P&9.74\times 10^{-8}&0.000137&0.000322&0.0272&0.142&5.32&3.76&7.92\\ \#29P&4.13\times 10^{-6}&7.08\times 10^{-6}&2.68\times 10^{-5}&0.000259&0.00 210&0.145&0.133&0.597\\ \#33P&6.16\times 10^{-5}&2.53\times 10^{-5}&7.43\times 10^{-7}&0.000722&0. 00379&0.139&0.0991&0.150\\ \#49P&6.83\times 10^{-5}&0.000437&0.000490&6.70\times 10^{-6}&7.61\times 10^{-5}&0. 00646&0.00534&0.00650\\ \#53P&0.000546&0.000922&0.000321&2.28\times 10^{-5}&2.16\times 10^{-5}&0. 000498&0.000216&0.000192\\ \#69P&0.00358&0.00149&0.00175&0.000144&0.000230&8.19\times 10^{-6}&4.84 \times 10^{-6}&1.43\times 10^{-5}\\ \#73P&0.0999&0.0182&0.814&0.00132&0.00125&3.46\times 10^{-5}&7.84\times 10^{-6}&1. 26\times 10^{-5}\\ \#91P&0.0185&0.0532&0.115&0.00104&0.000430&4.79\times 10^{-5}&1.83\times 10^{-5}&5. 98\times 10^{-8}\\ \end{array} \right] \tag{20}\]  
\[A1-Cxx_{g44}=\left[ \begin{array}{cccccccc}&\#1B&\#2B&\#3B&\#4B&\#5B&\#6B& \#7B&\#8B\\ \#14P&0.0882&5.72&22.2&95.6&1083&179713&187922&389897\\ \#29P&0.669&0.436&1.644&22.7&191&34293&36147&73878\\ \#33P&4.25&0.695&0.495&45.5&111&7595&10478&15859\\ \#49P&105&24.7&27.2&0.503&7.60&402&333&702\\ \#53P&512&146&220&0.607&1.60&91.7&98.3&191\\ \#69P&5169&972&29.3&54.5&89.8&0.332&0.354&3.59\\ \#73P&14705&2328&3093&281&375&0.0995&0.223&0.0620\\ \#91P&5045&11985&2611&639&1113&9.72&1.39&0.00755\\ \end{array} \right] \tag{21}\]  
\[A1-Cyy_{g44}=\left[