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deflection in stiffened plate under pressure
can anyone point me in the direction of calcs for the deflection of a stiffened plate under normal vacuum.
thanks
scott
check out our whitepaper library.
formulas for stress and strain; roark and young
the plate acts as flange and the stiffener is the web of a t-beam. look in your code to find out how much width of the plate acts as flange and then find out the sectional properties of tee. rest of the cals are simple.
it was more difficult than that. here is the equation that works out
____________鈥漷hick plate __________#of stiffeners ___________鈥?per stiffener
ap = cross sectional area of plate within distance b
as = cross sectional area of stiffeners
b = distance between stiffeners
d = distance between center of gravity of panel and that of the stiffener
t = thickness of panel
is = moment of inertia of stiffener
wi = width of stiffener (for inertia of stiffener)
e = modulus of elasticity (28500000 for 304ss)
i = moment of inertia of whole panel stiffened
l = length of panel
cp = as d + t = distance form neutral axis of whole section to outer fiber of plate
as + ap 2
qp = mmax cp = maximum stress in outer fibers if panel
i
mmax = p b l^2
8
deflection = 5 p b l^4
384 e i
moment of inertia wi(t of stiffener)^3
12
ap =_____________________
as = _____________________
b = ______________________
d = ______________________
t = ______________________
is = ______________________
l = _______________________
e = _______________________
________________________________________________________________________
i = is + ap t^2 + as ap d^2
12 as + ap
max stress (qp) = ________________________________________________________________________________________________________________________________________________
deflection of stiffened panel
________________________________________________________________________________________________________________________________________________max deflection = _______________________

2009-09-08, 04:53 PM	#1
huangyhg 超级版主注册日期: 04-03 帖子: 18592 精华: 36 现金: 249466 标准币资产: 1080358888 标准币	deflection in stiffened plate under pressure deflection in stiffened plate under pressure can anyone point me in the direction of calcs for the deflection of a stiffened plate under normal vacuum. thanks scott check out our whitepaper library. formulas for stress and strain; roark and young the plate acts as flange and the stiffener is the web of a t-beam. look in your code to find out how much width of the plate acts as flange and then find out the sectional properties of tee. rest of the cals are simple. it was more difficult than that. here is the equation that works out ____________鈥漷hick plate __________#of stiffeners ___________鈥?per stiffener ap = cross sectional area of plate within distance b as = cross sectional area of stiffeners b = distance between stiffeners d = distance between center of gravity of panel and that of the stiffener t = thickness of panel is = moment of inertia of stiffener wi = width of stiffener (for inertia of stiffener) e = modulus of elasticity (28500000 for 304ss) i = moment of inertia of whole panel stiffened l = length of panel cp = as d + t = distance form neutral axis of whole section to outer fiber of plate as + ap 2 qp = mmax cp = maximum stress in outer fibers if panel i mmax = p b l^2 8 deflection = 5 p b l^4 384 e i moment of inertia wi(t of stiffener)^3 12 ap =_____________________ as = _____________________ b = ______________________ d = ______________________ t = ______________________ is = ______________________ l = _______________________ e = _______________________ ________________________________________________________________________ i = is + ap t^2 + as ap d^2 12 as + ap max stress (qp) = ________________________________________________________________________________________________________________________________________________ deflection of stiffened panel ________________________________________________________________________________________________________________________________________________max deflection = _______________________ __________________ 借用达朗贝尔的名言：前进吧，你会得到信心! [url="http://www.dimcax.com"]几何尺寸与公差标准[/url]