另外用代数多项式和双正弦级数组成的解来满足角点条件。
Moreover, the solution composed by algebraic polynomial with double sine series is used to satisfy the corner conditions.
当板的四边为简支时可用双正弦级数解法来求得各阶固有频率。
When a plate is simply supported at four edges, it can be solved by double sine sery method to get each proper frequency.
本文推导了正弦级数与多项式的梁函数，它可以满足梁的简支、固定、自由等各种边界条件。
In this paper, sine series and polynomial beam functions are derived. They can satisfy various boundary conditions of beams such as the simply supported ends, fixed ends and free end.
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