The Analysis of the Clothing Pressure on Men’s Bodysuit Tops Using a 3D Virtual Clothing System Considering Stretch Fabric Properties and Arm Posture Factors

This study examined variations in pressure on the male upper body while wearing a bodysuit top made from different stretch fabrics, using a 3D virtual clothing system. The analysis focused on measuring clothing pressure at specific body points across three postures: shoulder at 0° and elbow at 0° (Pose 1), shoulder at 45° and elbow at 0° (Pose 2), and shoulder at 45° and elbow at 90° (Pose 3). The digital fabric properties were characterized by parameters such as stretch stiffness (warp/weft), shear stiffness, bending stiffness, thickness, and weight. Fifteen measurement points were identified based on the chest, waist, upper arm, elbow, and wrist circumferences. The results indicated that stretch stiffness (weft) was positively correlated with clothing pressure, whereas bending stiffness (weft) showed a negative correlation. Shear stiffness and bending stiffness (bias) showed complementary relationships, while stretch stiffness (warp) and bending stiffness (warp) did not exhibit significant correlations with pressure, except at the lateral waist. The analysis also revealed statistically significant differences in pressure across the different postures. In Pose 1, lateral chest pressure was the highest but decreased by 85% in Pose 2 and Pose 3. Posterior chest pressure increased by approximately 10% in Pose 3 due to elbow flexion, while waist pressure decreased by 10-20% in both Pose 2 and Pose 3. Additionally, pressure at the elbow circumference was highest in Pose 3, highlighting the significant impact of elbow flexion on pressure. Wrist pressure also increased by 4-16% in both alternative postures compared to Pose 1.