Sensitivity study of the finite element model for wood-framed shear walls
Sensitivity study of the finite element model for wood-framed shear walls
复制标题
木框架剪力墙有限元模型的敏感性研究
DOI：
10.1007/bf00771363
复制
发表时间：
2002
影响因子：
2.9
通讯作者：
Laurent Daudeville
中科院分区：
文献类型：
--
作者：
Sverker Andreasson;M. Yasumura;Laurent Daudeville
使用非线性弹性有限元模型对木框架剪力墙的单调分析进行了敏感性研究。目的是提供有关简化木框架剪力墙模型的信息，而不会显着降低准确性。这些简化涉及诸如框架构件之间的接头中的滑动、压紧连接中的滑动以及相邻面板之间的轴承等特征。对窗形开口剪力墙的分析结果表明，框架节点中面板与卡瓦间的受力约束对墙体整体刚度的约束作用有限。因此，通过不考虑这些现象，避免过多的自由度和迭代，有很大可能减少计算时间。简化对沿壁面垂直反作用力分布的影响更为显着。此外，如果单独引入每个简化，对整体刚度的影响更大。然而，差异小于 10%。当单独引入钉子连接时，钉子连接的失败模式也明显受到简化的影响。分析结果表明，框架接头中的滑移可以通过与开口相关的滑移来充分代表。
A sensitivity study was performed with a nonlinear elastic finite element model for monotonie analyses of wood-framed shear walls. The objective was to provide information about simplifying a model of wood-framed shear walls with no significant loss in accuracy. The simplifications concern features such as slips in joints between frame members, slips in hold-down connections, and bearing between adjacent sheathing panels. The results from analyses of a shear wall with an opening of window shape show that the effect of constraint by the bearing between sheathing panels and slips in frame joints on the overall stiffness of the wall is limited. Thus, there are great possibilities for reducing the calculation time by not taking these phenomena into account, avoiding an excessive number of degrees of freedom and iterations. The influence of the simplifications on the distribution of vertical reaction forces along the wall is more significant. Furthermore, if each simplification is introduced separately, the effect on the overall stiffness is greater. The difference, however, is less than 10%. The failing pattern of the nail connections is also clearly influenced by the simplifications when they are introduced separately. The results from the analyses show that slips in frame joints can be sufficiently represented by those in connection with the opening.