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分享 复模态和实模态什么区别?
duweizhuo 2012-6-26 12:14
对于无阻尼的情况,由特征值求解产生的频率和留数为纯虚数,模态振型值为带符号( + 或 - )的实数值,且每阶模态振型的各个自由度之间,要么彼此完全同相位,要么彼此完全反相位。 对于比例阻尼,此时阻尼与系统的质量和 / 或者刚度成比例。由特征值求解得出的频率为复数值,留数为纯虚数,模 ...
2313 次阅读|1 个评论 热度 1
分享 如何在ANSYS中读入txt文件的数据
duweizhuo 2012-5-2 10:05
1 不能直接在命令窗口中执行*vread 命令 *read 命令的使用格式为: *READ,PARR,FNAME,EXT,--,LABEL,N1,N2,N3,NSIP 前三项不用解释,ext是文件的开展名, --表示该域是不需要使用的值域 label是取值顺序标识字,ijk,ikj,jik,jki,kij,kji,空格表示ijk n1,n2,n3,是当label=kij ,n2,n3,缺省等于1时按照格式(((pa ...
1203 次阅读|0 个评论
分享 HSFLD241/242: Modeling Enclosed Liquids 封闭流体建模
duweizhuo 2012-3-31 00:24
HSFLD241/242: Modeling Enclosed Liquids by Eric Miller 23. 九月 2011 12:30 This is a second attempt at this posting. The first attempt got 60% of the way done, then I rebooted my machine before I saved the posting… Doh. So let’s try this again: Every once in a while I ...
1675 次阅读|0 个评论
分享 用CFD post来做动画
duweizhuo 2012-3-31 00:15
The other day there was a thread on XANSYS about the best way to create animations in ANSYS Mechanical APDL (MAPDL). If you are an MAPDL user you know that the animation tools found there were actually way ahead of their time… in 2001. Now they are a bit limited and the AVI file it creates us ...
6444 次阅读|0 个评论
分享 Mapped Face Meshing in ANSYS Workbench 映射网格化划分
duweizhuo 2012-3-30 21:31
In the era of automatic tetrahedral meshing, many have lost their way. Wondering analysts simply read in their geometry, specify a few sizing controls, hit a mesh button and get a mesh. But in the end, they receive a mesh that is not ideal, especially on the surface. What these meandering mes ...
2097 次阅读|0 个评论
分享 Sifting through the wreckage: Element Birth and Death in Workbench 从残骸中筛选 ...
duweizhuo 2012-3-30 16:31
So the WebEx that expanded upon my article about load vs. sub-step in Workbench ended with me getting booted from the teleconference and unable to rejoin. I handled as many questions as possible through the chat window, but one of them required a bit more than I was willing to answer via chat wi ...
561 次阅读|0 个评论
分享 Mid-side nodes: Do they really help?中间节点真的有用吗
duweizhuo 2012-3-30 16:22
From: http://www.padtinc.com/blog/post/2011/02/09/mid_side_nodes.aspx Mid-side nodes: Do they really help? By Joe Woodward 9. February 2011 17:32 Do those pesky mid-side nodes really do anything other than increase my node count and runtime?Over the years, I ha ...
959 次阅读|0 个评论
分享 3D Elements - Hexahedrons & Tetrahedrons.三D单元-六面体&四面体
duweizhuo 2012-3-30 16:19
This article is a reproduction from http://www.angelfire.com/oh4/psychfea/tets.htm Copyright belongs to Michael Bussler and Thomas Koehler 3D Elements - Hexahedrons Tetrahedrons. 3d elements take the form of cubes called hexahedrons (hexes) or 3d triangles ...
259 次阅读|0 个评论

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