l*****e
发帖数: 101 | 1 Smart Structures Technology 主要是研究什么的？
哪里有中文或英文的简单介绍？
请告诉网址，millions of thanks | k*****a
发帖数: 1518 | 2 mainly for structural control, i.e. use control mechanism to
sense (monitor) or to actuate (drive) a structure. for example,
you may put a set of sensor-actuator on a plate to damping a
vibration, or adjust a composite laminate's natural frequencies, etc.
Smart structures are not new, originated several decades ago. it is
essentially a structural analysis+control theory. it can be
roughly classified to categories, passive structural control and active
control. narrowly speaking, structures with
【在 l*****e 的大作中提到】
: Smart Structures Technology 主要是研究什么的？
: 哪里有中文或英文的简单介绍？
: 请告诉网址，millions of thanks
| P******n
发帖数: 1220 | 3 Thanks for your elaboration and effort for this board.//hoho
Addiontally, smartstruct tech may go beyond control field.
For example, sensor technology can be used for non-destructive
evaluation and testing purposes, which should be promising.
Another possibility is to use shape memory alloy for
rehabilitation of damaged structures.
Both of the foregoing topics have nothing to do with controltheory.
【在 k*****a 的大作中提到】
: mainly for structural control, i.e. use control mechanism to
: sense (monitor) or to actuate (drive) a structure. for example,
: you may put a set of sensor-actuator on a plate to damping a
: vibration, or adjust a composite laminate's natural frequencies, etc.
: Smart structures are not new, originated several decades ago. it is
: essentially a structural analysis+control theory. it can be
: roughly classified to categories, passive structural control and active
: control. narrowly speaking, structures with
| k*****a
发帖数: 1518 | 4
you're welcome, hehe
yes, NDE use lots of sensor technology, however IMHO, it's not a typical
example of Smart Structures because normally Actuactor should also be
present in order for the structure to be "SMART" (response to the outside
stimuli).
NDE has lots of industry applications and the major needs lots of background
on measurement, applied physics etc. it's very broad in spectrum of
application. a Ph.D. student can't be expected to master more than one or
two basic techniques and dip dee
【在 P******n 的大作中提到】
: Thanks for your elaboration and effort for this board.//hoho
: Addiontally, smartstruct tech may go beyond control field.
: For example, sensor technology can be used for non-destructive
: evaluation and testing purposes, which should be promising.
: Another possibility is to use shape memory alloy for
: rehabilitation of damaged structures.
: Both of the foregoing topics have nothing to do with controltheory.
| l*****e
发帖数: 101 | 5 thank you for your answer first~~~
我看过一些资料，有的资料说：
the traditional techniques have their downside,they typically add weight and
they work only for certain frequencies of viverations.
then I may ask the following questions:
how can the smart structures use the actuators to adapt vious frequencies of
viberations
and how can the speed of the smart materials responsed to the viberation catch
up with the high speed of the viberation if it happens.
【在 k*****a 的大作中提到】
: mainly for structural control, i.e. use control mechanism to
: sense (monitor) or to actuate (drive) a structure. for example,
: you may put a set of sensor-actuator on a plate to damping a
: vibration, or adjust a composite laminate's natural frequencies, etc.
: Smart structures are not new, originated several decades ago. it is
: essentially a structural analysis+control theory. it can be
: roughly classified to categories, passive structural control and active
: control. narrowly speaking, structures with
| l*****e
发帖数: 101 | 6 斑竹挺负责人的嘛：learn from you
这里指的smart structures是不是和健康监测有些联系
通过监测系统 把振动 反映到计算机，再发出信号给actuator让其往返运动来damp vib
eration
刚刚接触，不知我理解有没有问题
还有个问题就是如何shape the material?是通过shape 来让他适应不同的振动频率吗？
【在 P******n 的大作中提到】
: Thanks for your elaboration and effort for this board.//hoho
: Addiontally, smartstruct tech may go beyond control field.
: For example, sensor technology can be used for non-destructive
: evaluation and testing purposes, which should be promising.
: Another possibility is to use shape memory alloy for
: rehabilitation of damaged structures.
: Both of the foregoing topics have nothing to do with controltheory.
| l*****e
发帖数: 101 | 7 thanks again
我又发现了一牛师哥，简单几句点破我心中好几个疑团
接着你的问题
如果sma is not a good choice for fast response speed and higher response acc
uracy ,then what is the substitute?or what is more promising in recent years
.
Now I just want to find new and effective methods to protect the bridge or t
all buildings from wind load and earthquake.
【在 k*****a 的大作中提到】
:
: you're welcome, hehe
: yes, NDE use lots of sensor technology, however IMHO, it's not a typical
: example of Smart Structures because normally Actuactor should also be
: present in order for the structure to be "SMART" (response to the outside
: stimuli).
: NDE has lots of industry applications and the major needs lots of background
: on measurement, applied physics etc. it's very broad in spectrum of
: application. a Ph.D. student can't be expected to master more than one or
: two basic techniques and dip dee
| P******n
发帖数: 1220 | 8 Geneally speaking, I would say that any civil structures, if they need online
monitoring for improving their performance, may be categoried as 'smart'.
Taking control technology as an example, it is mature in EE and ME, but many
people doubt its usefulnessfor bulky civil systems.
Passive control could be more conservative remediesand are easily
appreicaited by civil engineers.
The biggest question is: Is control tech really needed before we are actually
fully aware of the 'true' nature of struct
【在 l*****e 的大作中提到】
: thanks again
: 我又发现了一牛师哥，简单几句点破我心中好几个疑团
: 接着你的问题
: 如果sma is not a good choice for fast response speed and higher response acc
: uracy ,then what is the substitute?or what is more promising in recent years
: .
: Now I just want to find new and effective methods to protect the bridge or t
: all buildings from wind load and earthquake.
| p******o
发帖数: 2682 | 9 online
actually
acc
years
t
outside
background
or
response | l*****e
发帖数: 101 | 10 真是谢谢斑竹，又给我这么想尽的解答
今天去听了一个uiuc的教授B.F.Spencer的讲座：
smart structure technologies
准备了挺多问题想讲座后问，没想到在他的讲座了都一一解答了：）
【在 P******n 的大作中提到】
: Geneally speaking, I would say that any civil structures, if they need online
: monitoring for improving their performance, may be categoried as 'smart'.
: Taking control technology as an example, it is mature in EE and ME, but many
: people doubt its usefulnessfor bulky civil systems.
: Passive control could be more conservative remediesand are easily
: appreicaited by civil engineers.
: The biggest question is: Is control tech really needed before we are actually
: fully aware of the 'true' nature of struct
| P******n
发帖数: 1220 | 11 苏磐石原来在Notre Dame，今年暑假才来的这里。
他主要就是搞的Control,MR damper那一类的东东。(他的女弟子Dyke
也是搞这东东)。
这学期他开一门课叫Advance structural dynamics，讲的也是有关控制的专题。偶就不
去了。
土木搞控制的，90年代搞的人还是颇有几个，当然是日本人起头。因为他们政府规定公司
收入的百分之几必须用来做科研经费。所以就狂研究不已。美国搞控制的，偶知道的，除
了上两为外，还有UCI的YANG，USC的JOHNSON，COUMBIA的BETTI，CALTECH也有人高过(IWA
N
LO的SOONG，他可是始做蛹者。HOHO。
online
many
actually
acc
years
or t
【在 l*****e 的大作中提到】
: 真是谢谢斑竹，又给我这么想尽的解答
: 今天去听了一个uiuc的教授B.F.Spencer的讲座：
: smart structure technologies
: 准备了挺多问题想讲座后问，没想到在他的讲座了都一一解答了：）
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