01.07.2014 Views

Design and Stress Analysis of Extraterrestrial ... - The Black Vault

Design and Stress Analysis of Extraterrestrial ... - The Black Vault

Design and Stress Analysis of Extraterrestrial ... - The Black Vault

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

<strong>The</strong> calculation is presented in lines,16-23 <strong>of</strong> Table 5.2.<br />

Let us determine the coefficients:<br />

:D = 0,257.0"6,3 = 42,6 daN/ram;<br />

6D 6.166,3 2<br />

-<br />

h2<br />

-<br />

0,52<br />

.3980 daN/mm<br />

<strong>Stress</strong> distribution along the anode is indicated in Fig. 5.23.<br />

Case 6. <strong>The</strong>rmal stresses in a free shell. <strong>The</strong> quantities<br />

h, r, At are given. Find al, ax, a (P(M), w.<br />

It is known that thermal stresses in a free shell cccur if t!he<br />

law <strong>of</strong> temperature variation along the length is nonlinear, i.e.,<br />

if At = Bxn when n > 2. We assume At =B + Blx 2 .<br />

Deformation <strong>of</strong> the shell is<br />

WWt+JWy, where wt=raAt.<br />

We<br />

find the elastic component <strong>of</strong> the deformation.<br />

With the application <strong>of</strong> rigid bonds<br />

w=O; w.=-wt=-raAt.<br />

Deformation <strong>of</strong> the shell from the str'ess arising as a r...ult<br />

<strong>of</strong> the application <strong>of</strong> bonds i3 determined from equation (5.114):<br />

We obtain<br />

E~i EhaAt<br />

+ ~ rD<br />

WP=wo+.w, =e-(Ci sin<br />

+- (G 3 Sin X+C 4 cos •X)<br />

+x+C 2 coS , V) +

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!