Pipeline stress load condition problem
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What is the difference between the two types of forces in the image? Seeking advice from experts
OPE: Operating conditions, which mainly involve factors such as the stress on pipeline supports and pipe ends, as well as support displacement. SUS: Continuous operating condition, mainly used to evaluate continuous stress (primary stress), the forces acting on pipe supports, and other related information. EXP: Thermal expansion condition, mainly used to evaluate displacement stress (secondary stress); it is a virtual condition that does not exist in reality.