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If a traditional explicit numerical integration algorithm is used to solve motion equation in the finite element simu- lation of wave motion, the time-step used by numerical integration is the smallest time-step restricted by the stabil- ity criterion in computational region. However, the excessively small time-step is usually unnecessary for a large portion of computational region. In this paper, a varying time-step explicit numerical integration algorithm is in- troduced, and its basic idea is to use different time-step restricted by the stability criterion in different computa- tional region. Finally, the feasibility of the algorithm and its effect on calculating precision are verified by numeri- cal test.
If a traditional explicit numerical integration algorithm is used to solve motion equation in the finite element simu- lation of wave motion, the time-step used by numerical integration is the smallest time-step restricted by the stabil- ity criterion in computational region. However, , the excessively small time-step is usually unnecessary for a large portion of a computational region. In this paper, a varying time-step explicit numerical integration algorithm is in- troduced, and its basic idea is to use different time-step restricted by the stability criterion in different computa- tional region. Finally, the feasibility of the algorithm and its effect on calculating precision are verified by numeri cal test.