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组成相似原理(以下简称原理)是联合运用相似性和对称性、反对称性等去研究力学对象的方法.即由相似单元按某些规律组成的对象,在相似外因作用下,当满足各单元相互间边界条件及初始条件时,可从其任一单元的研究出发,再依各单元的相似比及排列综合得到整个对象所需要的解答.其对象应首先满足:1)相似条件维持不变,2)确能由各单元的解综合得到整体的解.以下将适用原理的对象称为可分解的.将原理应用于刚架简化计算得到了下面的一些结论.刚架是小变形的且略去了轴力种剪力对变形的影响.采用的符号是:P_i、q_i、m_i 为第i 子刚架(不加下标的表原刚架)上集载、分布载、质量;C_i、S_i、h_i 或l_i 为第i 子刚架中杆件的传递系数、抗弯刚度、
The principle of similarity of composition (hereinafter referred to as the principle) is a method that uses similarity, symmetry, and antisymmetric properties to study mechanical objects. That is, objects composed of similar elements according to certain laws, under the influence of similar external factors, when satisfying each unit For the boundary conditions and initial conditions between each other, we can start from the study of any unit, and then obtain the answers needed by the whole object according to the similar ratio and permutation of each unit. The object should first satisfy: 1) similar conditions remain unchanged 2) The overall solution can indeed be obtained from the solution synthesis of each element. The following applies the principle of the applicable principle to decomposable. Applying the principle to rigid frame simplified calculations results in the following conclusions. The rigid frame is small deformed and The effect of axial force shear force on deformation is omitted. The symbols used are: P_i, q_i, m_i are the ith sub-frames (with no subscripts on the original frame) on the load, distribution load, quality; C_i, S_i, h_i, or l_i are the transmission coefficients, bending stiffness, and the rod members in the i-th subrack.