三维实体退化虚拟层合梁单元在梁极限承载力分析中的应用

Analysis of ultimate load capacity for beam using degenerated three-dimensional solid virtual laminated beam element

提出采用三维实体退化虚拟层合梁单元计算梁极限承载力的方法。考虑结构的几何非线性和材料非线性,利用该单元编制了极限承载力计算程序,并将其应用于梁极限承载力的分析。计算实例表明,该单元收敛快,稳定性好,在单元数较少的情况下,具有较高的精度。由于能克服块体单元或梁段单元法的缺陷,该计算方法具有更强的通用性。

The method that ultimate load capacity of beam is analyzed by degenerated three-dimensional solid virtual laminated beam element is presented.Considering the considering that the geometry of construction and the materials are nonlinear the computing of ultimate load capacity for beam is programmed by the element.Thereafter,the program is used to analyze ultimate load capacity for beam.Numerical results show that the element has the advantages of good convergence,stability and higher precision.Because of overcoming the limitation of solid elements or beam segment elements,the method has better universality.