Question

Is quartz considered a piezoelectric material, need some questions answered about the file attached in here

Answer 1

@Kainui

Answer 2

Yo. Wrong subject.

Answer 3

need some questions answered about this

Answer 4

quartz the mineral? :O

Answer 5

yeah, if u look at problem 3, there are making a quartz unimorph, and im supposed to make a PZT unimorph, is that the same thing as that

Answer 6

quartz the singer formerly known as prince

Answer 7

oh my gudness

Answer 8

Oh my I see Young's modulus haha!

Answer 9

Engineers are so cute

Answer 10

lol

Answer 11

But I think you're on the right track dan

Answer 12

k np, u want me to make u a sensor?

Answer 13

hmu

Answer 14

Yes

Answer 15

I don't know what any of this stuff is, unimorph? All these things are like weird conventions for things I don't know what they are

Answer 16

k hang on ill show u what i really need

Answer 17

http://prntscr.com/dhft3j
http://prntscr.com/dhftkx
okay so lets say this the start, they gave me this, and said find the constitutive equations for your piezoeletric and piezo cermaic materials, online or wherever.

So I looked through some of those practice problems, I dont see how exactly they are making use of these matrices there, it looks like theyre just plugging in some coefficients and solving it

Answer 18

http://www.efunda.com/materials/piezo/material_data/matdata_output.cfm?Material_ID=PZT-5A
found that for my PZT

Answer 19

ahh this is vague sorry!

Answer 20

gonna go try to figure out a bit more before coming back!

Answer 21

lol maybe we should get in a call if you wanna catch me up on some of this stuff yeah xD

Answer 22

itd be great i actually could... bit i literally have no idea about whats going on, u probably know more than me on this stuff at this point

Answer 23

all im trying to do now is put some equations together in some template code and get an output

Answer 24

i will take the time to learn about all this stuff before the exam though u shud join me for that!

Answer 25

haha well looks like matlab going on and I understand the tensor stuff but looks ilke there's some other tensor notation you're converting too lol

Answer 26

have you ever used flex pde, i cant show u my code so far

Answer 27

that has a worked out soultion to a PZT actuator, im trying to pull out his constitutive equations from the code

Answer 28

I can* show u my code

Answer 29

What's a PZT actuator

Answer 30

piezoelectric material is like this material that behaves funky under stress and strains, because of its crystal properties, if u compress of expand it, there can be electrif fields that are produced within it, or even going backwards if u induce a field on it, it can expand and contract to reach statis

Answer 31

stasis

Answer 32

these properties are used to 'actuate' stuff like they can be used as a way of doing microscopic movements, used as temp sensors, pressure sensors, and so on

Answer 33

flex pde? no what's that? is it a specific PDE or is it like some program

Answer 34

the basic point is this, u have a material it has some kinda
stress / strain tenso, as a functiong of voltage , temp, and pressure, based on its constitutive equations, and we are just seeing how it behaves under a voltage for this problem

Answer 35

yeah its a PDE solver, finite element method program