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王刚
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论文成果
含机构位移起重机主副臂组合臂架结构几何非线性分析
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- 发表时间：2015-01-01
- 发表刊物：工程力学
- 所属单位：海洋科学与技术学院
- 文献类型：J
- 卷号：32
- 期号：7
- 页面范围：210-218
- ISSN号：1000-4750
- 摘要：A majority of lifting machineries contain the mechanisms for positioning
heavy weights. These additional mechanisms constrain the locations of
boom structures after deformation under loads, which can be considered
as generalized applied forces related to structure and mechanism
displacements. Boom structures are divided into several substructures
along the longitudinal direction, and internal displacements of each
substructure are reduced to the displacements of its left and right
ends. Based on the Co-rotational method, an embedded coordinate system
is defined, and a set of generalized nodal internal forces for
substructure elements are formulated. Taking main and sub-boom
structures of crawler cranes for an example and considering that the
boom structures are constrained and controlled by derricking mechanisms,
the additional nodal external forces and their derivatives on the
substructure element nodes are obtained. At last, a numerical example of
sub-boom working conditions for a kind of crawler crane is presented, in
which the displacements of boom structures and mechanisms under
different load conditions are obtained. The numerical example proves the
validity and rationality of the analytical procedure.
- 备注：新增回溯数据
