摘要
把正交正放类网架结构简化为构造上正交异性的夹层板,采用考虑剪切变形的具有三个广义位移的平板弯曲理论来分析,给出了网架结构在局部荷载作用下的内力、位移解析计算公式,并用有限元方法进行了验证。
In this paper the orthogonal and ortho-laid
space grids are assumed as an orthotropic sandwich plate,
which is analyzed by the theory of plate with consideration
of shear deformation and three generalized displacements.
The calculating formulas for internal forces and displace-
ments of double-layer space grids under local loading are
given based upon ESPM, and have been validated by the
finite element method (ANSYS). In general, the differ-
ences between ESPM and FEM are less than 10% and 5%
for internal forces and displacements, respectively. So this
method can be used in the design of double-layer space
grids.
出处
《力学与实践》
CSCD
北大核心
2004年第3期54-56,共3页
Mechanics in Engineering
