Development of expression method for load transfer in structures

作者引入了一个与应力和应变无关的参数U*来表示给定结构中的荷载传递和荷载路径。对于受分布位移作用的点，不能计算常规的U*。为了克服这个困难，开发了一个新的参数U**。给出了一种能量矩阵和刚度矩阵互补的数学公式，可用于U**的高效计算。以客车车体为例，采用U**参数表示弯曲振动条件下的载荷传递。

A parameter U*, which is independent of stress and strain, has been introduced by the authors for expressing load transfer and load paths in a given structure. The conventional U* cannot be calculated for a point under distributed displacement. To overcome this difficulty, a new parameter U** was developed. A mathematical formulation with complementary energy and stiffness matrices was demonstrated, which can be used for efficient computation of U**. The parameter U** was used for expressing load transfer in the case of a passenger car body under the condition of the bending vibration.