Which strength theory is used for strength verification of containers?
Thread Content
Strength verification of the container is performed; since pressure vessels are made of plastic materials, the third and fourth strength theories are applied. But the third strength theory = (design pressure * container diameter / (2 * wall thickness)), and the fourth strength theory is design pressure * container diameter / 2. 3*wall thickness)), the results vary; should the third or fourth strength theory be used?
In fact, GB 150 uses the first strength theory, namely the maximum principal stress theory. The main reason is that the primary reference standard for GB 150 is the relevant sections of ASME, and ASME adopts the maximum principal stress theory.
What does the original poster mean? Is it to avoid the product manufacturing standards and directly solve for stress using strength theory? Generally, the strength verification of containers can be carried out directly in accordance with the product’s design standards.
For conventional design, GB150 primarily uses the first strength theory, while JB4732 uses the third strength theory
GB150 uses the first strength theory, while JB4732 uses the third strength theory.