PROBLEM TO BE SOLVED: To provide a fluid-structure interaction analysis method and a fluid-structure interaction analysis program capable of making simulations that more closely resemble actual behavior by taking cavitation into consideration.;SOLUTION: A solid calculation means 21 of a computer 20 calculates the amount of displacement of a structure by calculating a momentum conservation equation. A fluid calculation means 22 of the computer 20 calculates boundary flow rates and Jacobians on the basis of the amount of displacement of the structure and delivers pressure to a bubble growth calculation means 23 of the computer 20. The bubble growth calculation means 23 calculates a time-development equation about bubble radius on the basis of the pressure and delivers the bubble radius, bubble growth rate and void ratio to the fluid calculation means 22. The fluid calculation means 22 calculates the pressure by using a mass conservation equation into which the term of bubble mass is incorporated using the Jacobians, the bubble radius, the bubble growth rate and the void ratio, and delivers the pressure to the solid calculation means 21. The computer 20 calculates the amount of displacement using the pressure delivered from the fluid calculation means.;COPYRIGHT: (C)2006,JPO&NCIPI
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