What are the measures to reduce local stress?

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The measures to reduce local stress are as follows. (1) Rational structural design to reduce the stiffness difference between the two connectors; use arcs for transitions as much as possible; reinforce specific areas; select appropriate positions for openings. (2) Reduce the local loads transmitted by components. For example, by providing supports or brackets for attachments such as pipes and valves, the impact of the weight of these attachments on the housing can be reduced. Installing thermal compensation elements on fittings and other attachments can reduce the thermal load caused by thermal expansion and contraction. (3) Minimize defects in the structure. During the manufacturing of pressure vessels, defects such as pores, slag inclusions, and incomplete welding may occur due to manufacturing processes and operational factors. These defects can lead to high local stresses, and it is necessary to avoid them as much as possible.