Common use of Design Requirements Clause in Contracts

Design Requirements. 9.2.1. Metal liner The compressive stress in the liner at zero pressure and 15 °C shall not cause the liner to buckle or crease. 9.2.2. Composite over-wrap The tensile stress in the fibres shall meet the requirements of paragraph 6.5. above. 9.2.3. Stress analysis The stresses in the tangential and longitudinal direction of the cylinder in the composite and in the liner after pressure shall be calculated. The pressure used for these calculations shall be zero, working pressure, 10 per cent of working pressure, test pressure and design burst pressure. The limits, within which auto-frettaging pressure shall fall, shall be calculated. The calculations shall use suitable analysis techniques using thin-shell theory taking account of non-linear material behaviour of the liner to establish stress distributions at the neck, transition regions and the cylindrical part of the liner.

Design Requirements. 9.2.1. Metal liner The compressive stress in the liner at zero pressure and 15 °C shall not cause the liner to buckle or crease. 9.2.2. Composite over-wrap The tensile stress in the fibres shall meet the requirements of paragraph 6.5. above. 9.2.3. Stress analysis The stresses in the tangential and longitudinal direction of the cylinder in the composite and in the liner after pressure shall be calculated. The pressure used for these calculations shall be zero, working pressure, 10 per cent of working pressure, test pressure and design burst pressure. The limits, within which auto-auto- frettaging pressure shall fall, shall be calculated. The calculations shall use suitable analysis techniques using thin-shell theory taking account of non-non- linear material behaviour of the liner to establish stress distributions at the neck, transition regions and the cylindrical part of the liner.