written 5.6 years ago by
teamques10
★ 65k
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modified 5.6 years ago
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For parallel combination
$\hspace{0.8cm}P_{Al} = P_{St}\\
\sigma_{Al}\hspace{0.05cm} .\hspace{0.05cm} A_{Al} = \sigma_{st}\hspace{0.05cm} .\hspace{0.05cm} A_{st}\\
\sigma_{Al}\hspace{0.05cm} \times\hspace{0.05cm} 2000 = \sigma_{st}\hspace{0.05cm} \times\hspace{0.05cm} 8000\\
\hspace{1cm} \sigma_{Al} = 4\hspace{0.05cm} \sigma_{st}\\$
(i) Stresses in AL and ST
$T = 140 - 20 = 120\hspace{0.05cm} ^\circ{C}\
(\alpha L t)_{Al} + (\alpha L t)_{st} - (\frac{PL}{AE})_{Al} - (\frac{PL}{AE})_{st} …
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