Numerical Investigation to the Deformation of Measured Large-Scaled Structures Based on Isogeometric Analysis

In modern production environments, accurate geometric measurements are crucial for quality control and structural analysis. The examined objects often have complex and individual geometric shapes, and depending on the sensors used, very high data point densities can occur. Typically, a CAD model based on the data is created and corresponding types of analyses are performed. However, examining geometries in their most accurate representation can lead to costly computational time and resources in the transition to regular finite element analysis (FEA). Especially in connection with the large dimensions of the objects, long interruptions in the production process can occur. This paper explores the potential of Isogeometric Analysis (IGA) for structural analysis of large, point cloud-based geometries. It allows CAD models to be directly linked to FEA procedures by incorporating Non-uniform rational basis splines (NURBS) into the framework. This approach eliminates the need to convert into an evaluable mathematical domain, thereby avoiding geometrical approximation errors during analysis. We present an industry-related application demonstrating the feasibility and advantages of IGA, particularly for large-scale structures. The modelling of the point cloud-based data focussed on its analysability will be addressed. Our findings indicate that IGA significantly reduces computational time and resources while maintaining high precision in structural analysis.