19/30396377 DC

This standard 19/30396377 DC BS ISO 21143.2. Technical product documentation (TPD). Requirements on digital mock-up virtual assembly test for mechanical products is classified in these ICS categories:

• 21.020 Characteristics and design of machines, apparatus, equipment

This document specifies the requirements of a digital mock-up virtual assembly test for mechanical products, which is suitable for guiding virtual assembly testing before physical production. The application of this standard should result in an effective virtual assembly test and efficient on-site assembly. This test is applicable to 3D nominal models with theoretically exact dimensions.

Hereby, the digital mock-up virtual assembly test is a computer simulation procedure in lieu of performing a physical prototype test for a product to verify the compatibility of the mechanical interface and the feasibility of assembly. This test can be used to explore and resolve interface or/and assembly problems before physical product assembly. Virtual assembly test activities typically include virtual interference inspection, assembly process analysis and ergonomic evaluation based on 3D nominal models in the design phase. It can be helpful to consider the results of a virtual assembly test to predict and provide early warnings regarding the risk of interference or assembly problems, although the virtual assembly test cannot completely replace all the tests in on-site assembly testing.

The objectives of the virtual assembly test are as follows:

1. Verify the mechanical interface compatibility of units, sub-systems and products;

2. Ensure that the design output is intended to interference-free and that all contacts or clearances are acceptable;

3. Validate layout design at every assembly level;

4. Verify assembly feasibility in the manufacturing and operational environments;

5. Evaluate assembly process to optimize assembly plan.