做柔性体仿真,从ANSYS导入模态中性文件时有这个报错. Negative pivot encountered. This is likely caused by insufficient displacement constraints or improper master dof selection to avoid rigid body motion of the superelement region currently selected. 还有一个 superelement file
最近在看js,正好公司用的框架中用到了模态窗口,以前没有接触过,现在把模态窗口的用法先记下来. 常用的浏览器chrome,Firefox,ie11,这三种分别支持document.open(),window.showModalDialog(),window.showModalDialog()的方式.下面还是直接给出代码,比较直观: motaichuangkou.html <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//E