Analysis of Selected Methods of Computer-Aided Design for Stage Structures

This article presents the design process for a modern stage trapdoor, which was designed to optimize the work of cultural facilities personnel and increase the attractiveness of future performances and events. Strength calculations for the supporting structure were carried out in the Soldis DESIGNER program, and based on these, a 3D model of the stage trapdoor was designed and placed in the space of the stage chimney. In order to verify and analyze the strength of the structure, the 3D model was prepared for detailed analysis in the Autodesk Inventor program. Tests were carried out for four load cases of the structure for 15 different load values. Information about the maximum value of the deflection arrow and the maximum stress was obtained. Collected data were organized in tables and displayed in line and column charts, based on which conclusions were drawn. These analyses showed a high degree of compliance between calculations from both programs. It was found that in this type of structure, a detailed analysis in 3D CAD programs is not necessary for the proper design of the supporting structure, which allows for simplification of the design process. The designed trapdoor meets all design requirements and can be implemented as a solution to improve the functionality and aesthetics of the stage’s technical equipment.