Method for analyzing heat exchanger

A method for analyzing a heat exchanger having a heat exchanger main body formed by a plurality of heat transfer tube groups, each of which is formed of a plurality of heat transfer tubes arranged side by side in an in-plane direction, being stacked in an out-of-plane direction intersecting the in-plane direction and an anti-vibration member provided between the heat transfer tube groups adjacent to each other to extend to intersect the heat transfer tubes, the method comprising:

• a structural model creation step of creating a structural model of the heat exchanger;
• a non-linear model creation step of creating a non-linear model in which a non-linear spring element in the out-of-plane direction, in which a load is not generated at the time of non-contact between the heat transfer tube and the anti-vibration member and a load is generated at the time of contact, is applied to each of opposing portions between the heat transfer tubes and the anti-vibration member in the out-of-plane direction in the structural model;
• and
• a load distribution acquisition step of performing analysis in which the load in the out-of-plane direction is applied to the non-linear model to acquire load distribution of the heat exchanger from a value of the load in each of the opposing portions.