【摘要】 本文对结构分析的有限元解提出了一个修正方案,把有限元解看作分段(分片)满足某微分方程的一个齐次解,分段(分片)叠加一满足具有固定边条件的特解作为有限元的修正解,则在任意载荷下,对梁杆系结构可以得到弹性精确解,而对于板系结构的解,其精度也有显著改善.更多还原

【Abstract】 In this article a modified solution is presented for the structure analysis by finiteelement method.The solution of finite element method in the structure may be regardedas one which is satisfied with the homogeneous differential equation segment by segment(or piece by piece).To the aforementioned solution is added a special solution,satisfiedwith a fixed boundary condition segment by segment(or piece by piece).The modifiedsolution obtained is an exact one for a structure of beams and bars and the precision isobviously improved for a structure of plates.更多还原