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针对频域动力无穷元不便与时域有限元结合的缺陷,采用时域的波传函数,推导出一种新型的时域动力无穷单元,并采用UPFs工具对ANSYS进行二次开发,将其嵌入到ANSYS当中。然后采用经典算例对所提出的新型动力无穷单元进行验证,并将其结果与远置边界、粘性边界、粘弹性边界的结果进行比较。验证结果表明,所提出的新型时域动力无穷单元是成功的,并可方便地实现与时域的有限单元结合。
Aiming at the defect that the infinite power of the frequency domain is inconvenient combined with the finite element in the time domain, a new type of infinite power element in the time domain is deduced by using the time-domain wave function. The UPFs tool is used to develop the ANSYS again and embed Into ANSYS. Then, a classical example is used to verify the proposed new dynamical infinity unit, and the results are compared with the results of far boundary, viscous boundary and viscoelastic boundary. The verification results show that the proposed new time-domain power infinite unit is successful and can be easily combined with the finite elements in the time domain.