Txantiloia:Modulu elastiko

Bihurketa formulak
Material elastiko lineal isotropiko homogeneoek goian zehaztutako bi moduluren bidez soilik zehazten dira beren propietate elastikoak, beraz, beste edozein elastikotasun modulu kalkula daiteke formula hauen arabera.
	$(\lambda ,\,G)$	$(E,\,G)$	$(K,\,\lambda )$	$(K,\,G)$	$(\lambda ,\,\nu )$	$(G,\,\nu )$	$(E,\,\nu )$	$(K,\,\nu )$	$(K,\,E)$	$(M,\,G)$
$K=\,$	$\lambda +{\frac {2G}{3}}$	${\frac {EG}{3(3G-E)}}$			$\lambda {\frac {1+\nu }{3\nu }}$	${\frac {2G(1+\nu )}{3(1-2\nu )}}$	${\frac {E}{3(1-2\nu )}}$			$M-{\frac {4G}{3}}$
$E=\,$	$G{\frac {3\lambda +2G}{\lambda +G}}$		$9K{\frac {K-\lambda }{3K-\lambda }}$	${\frac {9KG}{3K+G}}$	${\frac {\lambda (1+\nu )(1-2\nu )}{\nu }}$	$2G(1+\nu )\,$		$3K(1-2\nu )\,$		$G{\frac {3M-4G}{M-G}}$
$\lambda =\,$		$G{\frac {E-2G}{3G-E}}$		$K-{\frac {2G}{3}}$		${\frac {2G\nu }{1-2\nu }}$	${\frac {E\nu }{(1+\nu )(1-2\nu )}}$	${\frac {3K\nu }{1+\nu }}$	${\frac {3K(3K-E)}{9K-E}}$	$M-2G\,$
$G=\,$			$3{\frac {K-\lambda }{2}}$		$\lambda {\frac {1-2\nu }{2\nu }}$		${\frac {E}{2(1+\nu )}}$	$3K{\frac {1-2\nu }{2(1+\nu )}}$	${\frac {3KE}{9K-E}}$
$\nu =\,$	${\frac {\lambda }{2(\lambda +G)}}$	${\frac {E}{2G}}-1$	${\frac {\lambda }{3K-\lambda }}$	${\frac {3K-2G}{2(3K+G)}}$					${\frac {3K-E}{6K}}$	${\frac {M-2G}{2M-2G}}$
$M=\,$	$\lambda +2G\,$	$G{\frac {4G-E}{3G-E}}$	$3K-2\lambda \,$	$K+{\frac {4G}{3}}$	$\lambda {\frac {1-\nu }{\nu }}$	$G{\frac {2-2\nu }{1-2\nu }}$	$E{\frac {1-\nu }{(1+\nu )(1-2\nu )}}$	$3K{\frac {1-\nu }{1+\nu }}$	$3K{\frac {3K+E}{9K-E}}$

Hooke-ren legea (3Dn) zurruntasun-matrizea (9 x 9, edo 6 x 6 Voigt notazioan) bi osagairekin soilik parametriza daiteke material homogeneo eta isotropoetarako. Goian emandako elastikotasun moduluen artean nahiago den bikotea aukeratu daiteke. Bihurketa posible batzuk taulan zerrendatzen dira.