如何从ansys 中进行结构动力分析如何得到加速度数据？

zql_progress · 发表于 2009-12-30 22:20

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本帖最后由 wdhd 于 2016-4-15 09:54 编辑

　　大家好!很高兴从这里见到这么多专家高手，我是刚刚从事钢结构健康检测方面的研究，现在遇到一个难题，请恳请高人相助：
　　对一单跨四层钢结构进行动力响应分析，跨度是0.9米，层高是1.2米，材料采用H150*150*7*10，想加一高斯白噪声作为激励，不知道如何才能得到加速度。恳请各位专家高手相助!万分感谢!急!
　　[ 本帖最后由 fengchunlijdb 于 2010-1-9 17:26 编辑 ]

rogen · 发表于 2010-1-9 11:17

可以在matlab中生成高斯白噪声！

xinglong-liu · 发表于 2010-1-11 09:01

如果你的ansys版本大于8.0的话,可以从结果文件直接提取加速度变量。否则的话，只能得到位移变量，然后对位移做时间的二次差分。

zql_progress · 发表于 2010-1-11 17:35

非常感谢楼上两位的解答！但是我不知道怎么将matlab生成的白噪声信号加到ansys里？

zql_progress · 发表于 2010-1-11 17:44

恳请各位专家能给予补充说明，我刚开始做这方面的研究，用matlab程序生成的白噪声如下：
clear;
x=randn(1,1000);
x=x/std(x);
x=x-mean(x);
a=0; %均值
b=1; %方差
y=a+sqrt(b)*x;  %产生均值零，方差为1的高斯噪声
plot(y)
clear;
x=randn(1,1000);
x=x/std(x);
x=x-mean(x);
a=0; %均值
b=1; %方差
y=a+sqrt(b)*x;  %产生均值零，方差为1的高斯噪声
plot(y)

同时用下面的命令产生了一些数据，不过产生的数据看不懂，针对我的问题，恳请大侠能给小弟解释一下！十分感谢！
clear;
x=randn(1,1000);
x=x/std(x);
x=x-mean(x);
a=0; %均值
b=1; %方差
y=a+sqrt(b)*x
y =

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不知道怎么把这种激励加到ansys里进行分析，ansys命令流还不熟悉！恳请各位专家能给予详细解释！万分感谢！急用！期待着各位的帮助！

xinglong-liu · 发表于 2010-1-11 19:13

建议你参考ansys help file 中的如何导入函数载荷那部分。

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[健康监测] 如何从ansys 中进行结构动力分析如何得到加速度数据？

马上注册，结交更多好友，享用更多功能，让你轻松玩转社区。

回复楼主 zql_progress 的帖子

补充：求助：但是我不知道怎么将matlab生成的白噪声信号加到ansys里？

[健康监测] 如何从ansys 中进行结构动力分析如何得到加速度数据？

马上注册，结交更多好友，享用更多功能，让你轻松玩转社区。

回复 楼主 zql_progress 的帖子

补充：求助：但是我不知道怎么将matlab生成的白噪声信号加到ansys里？

回复楼主 zql_progress 的帖子