What types of joint designs are preferred in piping systems that experience high vibration?

In piping systems that experience high vibration, flexible joints are preferred because they allow for movement and can absorb vibrations without transferring stress to the piping. High vibration levels can result from a variety of sources, such as pumps, compressors, or other mechanical systems, and rigid joints can lead to stress concentrations, which may cause failure or leaks over time.

Flexible joints are designed to accommodate misalignment, thermal expansion, and vibration. They typically incorporate materials or designs, such as expansion joints or flexible couplings, that can flex and move as needed. This flexibility helps to maintain the integrity of the piping system, preventing undue stress on the chassis and supporting structures and extending the life of the piping system.

In contrast, rigid joints do not allow for movement and could fail under conditions of high vibration. Similarly, while welded joints can be very strong, they lack any degree of flexibility, which makes them unsuitable for applications where systems can shift or vibrate significantly. Pinned joints, while allowing for some movement, still do not provide the same level of adaptability to vibrations as flexible joints do. Therefore, for systems subject to significant vibration, flexible joints are crucial for ensuring operational reliability and minimizing potential damage.