Abstract:
The finite segment modelling for the flexible beam-formed
structural elements is presented, in which the discretization
views of the finite segment method and the difference from the
finite element method are introduced. In terms of the nodal
model, the joint properties are described easily by the model of
the finite segment method, and according to the element
properties,the assumption of the small strain is only met in the
finite segment method, i.e., the geometric nonlinear deformation
of the flexible bodies is allowable. Consequently, the finite
segment method is very suited to the flexible multibody
structure. The finite segment model is used and the arc
differentiation is adopted for the differential beam segments.
The stiffness equation is derived by the use of the principle of
virtual work. The new modelling method shows its
normalization, clear physical and geometric meanings and simple
computational process.
Key words: Beam-formed
structural element Finite segment Stiffness equation S hape
function
*
This project
is supported by National Natural Science Foundation of China (59575026).
Manuscript received on
September 28, 1998; revised manuscript June 10, 1999
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