尤其是梁弯曲时内力图绘制的规律较多，不易记忆，容易出错。
Especially it is easy to make errors in drawing internal force diagram of a beam because the rules are too more to memory.
基于此，采用一种内力图的简便画法，避免复杂的计算，通过观察直接画出。
Based on this, we consider a map of the internal forces simple painting and avoid complex calculations, through direct observation of paint.
弯矩图是内力图的一种，检验弯矩图正确与否的基本方法是导数的几何意义判定法。
The basic way that verifies whether bending moment diagram is correct is derivative judge.
为了解决这个问题，通过内力分析，用等效结构方法计算原结构内力，内力图不会失真。
Internal force figure would be fault if wer make simply use of these software to analysis the closed structure.
总结了根据外力的符号直接绘制内力图的简单实用的绘制方法，这种画法简化了绘制过程，提高了绘图速度；
With the summary of simplified and practical designing approaches to draw internal force figures in accordance with notations in internal forces, which simplified drawing process and improved speed.
通过理论分析，提出利用对称性求解超静定结构时应注意的问题，避免因惯性思维造成最后内力图校核出现错。
By theoretical analysis, the considerations were put forward about the check with symmetry solving hyperstatic structure, avoiding internal force diagram check errors caused by inertial thinking.
这种方法根据微积分关系，确定曲线的始点、形状和末点，即可直接得到不同外力作用下平面弯曲梁的内力图，简捷且易掌握。
According to the calculus relation, the internal force chart can be gained by confirming the begin points, figure shape, ending points. This method is simple and easy to be grasped.
在进行机械工程计算时，作构件的内力图是非常重要和不可缺少的环节。本文针对较繁锁的内力图，就画法的简化进行了探讨。
In mechanical project calculation, drawing internal force diagram is very important. With respect to complex internal force diagram, this paper presents some simplification methods of drawing.
介绍了一种用剪力图和弯矩图求平面平行弦桁架内力的关系式，并利用截面法给出了相应的证明。
By means of the shear-diagram and the bending-diagram, the expressions of the internal forces in the members of the truss are introduced and demonstrated by the cross-section method in this paper.
介绍了一种用剪力图和弯矩图求平面平行弦桁架内力的关系式，并利用截面法给出了相应的证明。
By means of the shear-diagram and the bending-diagram, the expressions of the internal forces in the members of the truss are introduced and demonstrated by the cross-section method in this paper.
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