The objective of this study is to investigate the effect of torque variation on stress distributions in A-IMS module with both side tubular shaft yoke by numerically. In order to achieve this, the torque value was increased from 10Nm to 40Nm, and the results of this work were confirmed in terms of Von-mises Stress and the displacement characteristics. As the torque in module assembly was increased, the stress in tubular shaft york and splined shaft york was increased linearly. The indentation due to the steel ball was occurred in over 40N·m torque which is over the yield strength condition. The largest displacement occurred in the tubular shaft yoke 1, however, it does not exceed the yield strength and is supposed to be restored due to the elasticity. Therefore, it was concluded that there is no problem for the manufacturing of A-IMS with both side tubular shaft yoke.

This study was performed for the optimizations of A-IMS assembly by analyzing the stress distributions under the different torque conditions. In order to achieve this, the numerical simulation was performed by SOLIDWORKS commercial code and the torque range that applied on the A-IMS assembly was increased from 10 N·m to 40 N·m. The simulation results were analyzed and compared in terms of Von-mises stress, principal stress, and displacement characteristics. The maximum stress distributions was observed on the contact surface of needle bearing which is located between tubular and solid shaft. It was found that the fracture of A-IMS assembly won’t occur until 30 N·m of torque. Therefore, it was concluded that there is no problem for the manufacturing of A-IMS assembly.

In this study, we determinated the dynamic changing of soluble sugar, total nitrogen and malondialdehyde, so t㏊t found out their relationships with cold resistance. The result indicates: the content of soluble sugar and total nitrogen increased from late autumn and early winter, and kept higher level during the entire winter, then decreased in regreen time in the next spring. The content of malondialdehyde was high in Sep., then decreased gradually and reached the minimum in Jan., thereafter the content of malondialdehyde represented increasing trend.

This paper presents the basic data for the structural safety study of the extension wall by evaluating the bending stresses of the existing and extension walls varying according to the plan change of the extension building through the numerical analysis on the horizontal load as follows: 1) the stress variation of the divided wall when the wall opening due to a partial demolition is evaluated by comparing the result of analysis on whether or not the opening of the bearing wall is demolished as a variable; 2) the stress variation of the existing wall due to the increase of the stiffness of the extension wall is also evaluated by comparing the result of analysis on the thickness of the extension wall as a variable.