Numerical simulation of upper garment pieces-body under different ease allowances based on the finite element contact model

Abstract The interval distribution under different ease allowances directly influences the dressing effect. However, the indistinct 3D dressing process and unclear interval distribution pose severe challenges to practical applications. Inspired by real-time acquisition, the finite element model based on contact theory (FECM) was proposed. First, we constructed a biomechanical body geometric model consisting of the torso and soft tissues. Meanwhile, the garment pieces with different ease allowances were also constructed. Then, the FECM was constructed to simulate the interactions. The dressing period was applied to acquire dressing states. Finally, the displacements and interval distribution under different ease allowances were acquired. The results demonstrated the effectiveness of the FECM. During dressing, the displacements of garment pieces mainly occurred in the full contact and equilibrium phases. Dynamic changes in the shoulder gradually increase from small displacements, while the opposite occurs in the waist and hem area. Meanwhile, the interval distribution followed back > front > side seam. As the ease allowance increases, the interval distribution dynamic shifts from the back to the front piece. The reason is that the back muscle gradually replaced the chest convex points in the supporting garment pieces. The findings could enhance the dressing effect under different ease allowances.