JT

Jupiter Tesselation Data Format

Technische Universität Darmstadt is a member of the JT Open Program since 2003.

JT Open is a globally operating community of different stakeholders, like industrial enterprises, software vendors, users and universities. Main objective is the provision of 3D product data through the entire product life cycle based on an open and standardized data format, resulting in an open distribution of JT technology.

Besides the cooperation in various work groups and surveys, the Department of Computer Integrated Design has released several publications for the application of JT in engineering processes and business areas. Current research focuses on JT as FEA process format, a use case for JT in ship building, Collaborative Engineering based on JT models and the integration of JT in Additive Manufacturing.

The data format JT (ISO 14306:2012) enables the creation and utilization of performant 3D visualization models for all phases of the product life cycle. The compressible binary format contains a CAD neutral description of product data and serves as key enabler for the integration of multiple CAD and PDM systems. JT allows the integration of different geometry representations, from rough to fine tessellated representations (Levels of Detail, LOD) to exact geometry as boundary representation (B-Rep) and ultra lightweight representations (ULP) for small file data volumes with high visualization accuracy. Product structures, Product Manufacturing Information (PMI) and other meta data can be integrated.

The fields of application for JT can be divided into three groups:

  • 3D visualization,
  • Data exchange, and
  • Collaborative Engineering.

The integration of different geometry representations enables the efficient visualization of 3D product data. Viewer allow the application on mobile devices. Due to the CAD neutral description JT functions as key enabler for multi CAD and design in context applications. 3D product data and meta can be formalized, managed and made available for engineering processes. The combination with other data formats like STEP AP 242 is possible and represents an important approach in automotive and aerospace industry. Data exchange based on small file sizes enables the application of JT in Collaborative Engineering. Hence, JT offers huge potentials for the application as standardized, neutral process format in product development and nearly all downstream processes.