Measures to Improve Bolt Connection Strength
(1) Reduce the variation range of the total bolt tensile load Fa:
In order to reduce the rigidity of the bolt, the diameter of the polished rod part of the bolt can be reduced or a hollow screw can be used, or the length of the screw can be increased.
The rigidity of the connected part itself is relatively large, but the rigidity of the joint surface between the connected parts will be reduced when a soft gasket is used due to the need for sealing. If a metal thin gasket or an O-ring seal is used as the sealing element, the side can still be Keep the original stiffness value of the connected parts.
(2) Improve load distribution between threads (3) Reduce stress concentration (4) Avoid or reduce additional stress