说明采用七自由度单元的有限元法进行矩形截面简支梁的弯翘分析，有很高的精度，可以代替繁琐的解析解。
The result shows seven-freedom unit finite element method has high precision to analyse simple beam of rectangular section, it can replace complex analytic solution.
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.
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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