This study investigates the seismic behavior of low-aspect-ratio reinforced concrete (RC) shear walls when subjected to bi-axial lateral loading, using nonlinear finite element analysis. A three-dimensional finite element model was developed with the DIANA program and validated against previously reported experimental results. Subsequently, a parametric study was conducted by varying the wall aspect ratio of horizontal reinforcing bars under both uni-axial and bi-axial loading conditions. The analysis results show that bi-axial loading reduces shear strength by a significant amount compared to uni-axial loading, and the reduction becomes more pronounced as the aspect ratio decreases. For low-aspect-ratio walls, the influence of horizontal reinforcement on shear strength was limited, while sensitivity to bi-axial loading increased. These findings indicate that uni-axial loading–based evaluation methods may overestimate the seismic capacity of low-aspect-ratio RC shear walls.

Carousel type rotating molding machine is a plastics molding method that is adapted to producing relatively large and seamless parts which are partially or totally enclosed. So it is used to produce the big septic tank, storage tray, icebox, central reservation and so on. Rotating molding method are Rock and Roll, Shuttle, Carousel type, etc. In this study, to develop Carousel type rotating molding machine, its 3D model has designed. Also, to confirm the performance of this model, the theoretical and experimental analysis were carried out under condition of shape and structure of rotating unit and heating unit in molding machine