Ondes et stabilité dans les solides
Texte intégral
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(24) $ ) ) T1AUwCxBgnDe!?1Aej|A1xB M /:+;bi+;mV T U − (R + R
(25) )U + (Q − ρv I)U = 0, e KzBgCE-G]dfxMLngBDC T T Cxe!?5dHAUs ?1MzBgCrGj{KzBgw1{nDe!-re!C|Gj?5dfBgC /cdfxe!OT<7Y![!: 4T T R Q :;biU;bq T =c , R =c , Q =c . Y.
(26). . . 1. 2. 3. ijkl l,kj. ijkl. i,tt.
(27). . ijkl. klij. ijkl. jikl. . 1. . 1. k(x1 −vt). 2. 2. . . . 00. 2. 0.
(28). ik. i2k2. ik. i1k2. ik. i1k1.
(29) :+;X>@?1A1BDCHKzML?1sgGjMLxBgCBD? sDK GjCdfMzngMzd|s@KLMz?1sJG]ML|B ?&noO1BD|noOGj?5d{wU?-&e+AUB{rGjxd|MLBDKC|e!w1C e!x-B{B ³Ure!?1BD?5dfMLBDKLKzB U (kx ) = U B T e U BDCxd`w1?jBgnDd|Bgw1`nDe!?1CxdfGj?5dBDd q w1?1B~y8wGj?5dfM=dfsnDe!-rUKLB4³+B]Te!?Gje!wUdfM=dp} KLG
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(33) $ :+;miU;m[ AUBDd [q T + q(R + R
(34) ) + Q − ρv I] = 0. kB4d|d|B2sgy8wGdfMLej?T AUMzdfB vA1BkO1xMLCdfe BgK oTBgCd@w1?r e!K=I? &BBD? }-nDe+B &ngMLBD?5dfC |sgBDKLCD; ?©N!sg?UsgfG]KT(MLK°CgmGjN!M=dAmwU?1B T(KLej|C|y8wmGjw1nDw1?¤A1BDCGq³+BDC x T x T x ?mBDCxdlGjKLMzN!?1sGJ!Bgnw1? G³+B@A1BHCxI&sDdfxMLBA1w -G]dfsD|MLGjw* e!w 1MzBg?-C 1DTUC|MKLB-G]dfsD|M G]w ?1B@re!C|C gA1B`GjwUngw1?1BpCI-s4df|MzB ; c+BgC{|GjngMz?1BgC?1B@rBgwUjBg?5dA1e!?1n ,4dfxB@B4³+r1xML&sgBgCA1B 0G#ge!? Gj?GjK=Id|MLy8w1B]TUAmGjr1 gC{K G`dfO1sDe!|MzBA1B `GjKze!MLC BJGjAZT<7Y5WjY 4; >@? rBgwUdlGjKzN!|s dfe!wUdEejUdfBD?1ML{A1BDCHxsgCxw1KzdfG]dfCEB4³+r1KzMLnDMzdfBDC{AGj?1CEnDBgxdfGjML?UBgCEngMz|ngej?1CxdfGj?1ngBDCHB4dE|sDC|e!w1AU|B Bg?5dfM g|BD-BD?5d¢nDBgdoGjMz?1C r1|e!UK g&BgC£Gjw³~nge!?5d|e!w1|C£CfG]?1CGJje!ML BgC|ejML?&A1BgC£fGjnDML?1BDC A1B K GC|B ³dfMLy8w1B]; .°SB4³+Bg&r1KzBEGj|noO1s4dvIr BEA1B{nDBldvI+rBEA1B{r1xe!1K D-B¢BgCd¢KLG|BDnoO1BgxnoO1BA1B '
(35) $ '
(36) $ ' $ - w1?1BEsgy8wG]d|MLe!?&A1e!?5d KLG+M=dfBDC|C|BBgCd K G ' ML?1nDe!?1?8w1B 4; kB4d|dfBywUBgCxd|MLe!?Ge+nDngw1rsAUBl?1e!U|Bgw³2noOUBg|noOUBgw1xC£rBg?UAGj?5d r1KLw1CxMLBDw1|CA1sDngBg?U?1MLBDCgTpngej-&BKmG¤fGjnDe!?5dfs ML?1N AG]?1C wU? GjdfMzngKLB|sgngGjr1M=dfw1KLG]dfM= :ji!i]V a4; .(G_|sgwUC|C|M=dfB@KLG_r1Kzw1ClG] e!w+dfMLBAGj?UCngBA1e!-GjML?1BEBDCxd{KLG_&MLC|BHGjw re!Mz?8d¢A1w e!|-GjKLMzC|&BHMz?5dfsgNjfGjKAUB Gj|?1B4d|dBDd .ejd|O1B <7Y!!q 4T+ywUM(CDbG]r1r1w1MzBpC|w1KLBDCldffGJ]Gjw+³ r1MLe!?U?1MLBD|C£A1B`cd||e!O <7Y![5: ;°kBpA1BD|?1MzBgG2ML?5dfxe+AUw1Mzd¢KLBDCdf|GjnDd|MLe!?1C£CgSB4³+BD #JG]?8dCxw1 KLBgCr1K Gj?UC x = nge!?UCxdJ; 0?1ej|-GjKLBHe!|MzBg?5dfsDB!BD|CEKLBDC x nD|e!MzC|C|Gj?5dfC£C|e!w1C{KLG_e!x-B M M B + c.c., :+;miU;bW σ = −c u = kt ( x ) e M /:+;miU;b t = T U − R
(37) U ; r1w1MLCG2df|Gj?1Cxej|&s /:+;bi+;mV Bg? w1? CICxd D-BpAUM sg|BD?5dfMLBDKZA1wr1|BD-MzBgej|A1xB@r ejw1KzB !Bgn4dfBDw1}~[~nge!&re!CfGj?5d|BgC ξ = [u, t]
(38) ;10HML?1CxMT /:+;miU;mVBgCxdsDywUMz]GjKLBD?5d} M e /:+;miU;bY N N ξ = N ξ, N= , N + ρv I N
(39) BDd /:+;miU;z<Ji N = −T R
(40) , N = T , N = RT R
(41) − Q.
(42) B ?1e!21|BDw+³xsgCxw1KzdfG]dfC-A1sgnDe!w1KLBD?5d A1B nDBDd|d|Be!xw1K GdfMLej?; ? rGjxd|MLnDw1KLMzBg&e!? df|ejwU!B_ywUB_K/msDyw1G]dfMze!? AUB2K GMzd|BgCxC|B2AUBgCej?1A1BgCHA1BC|w10GjngB_r BDwUdCxB2&BDdxdf|BC|ejw1C K G2e!x-B A1BDd M (v) = 0, :+;miU;=<!< e M (v) BgCdHKzB & TUA1e!?5dKLBpAUsDdfBD|&ML?G]?8dgT|sDBgKTBDCxdw1?1B`e!?1n u dfMLej? &e!?1e]dfe!?1BQA1sDngxe!MLCxCfGj?5dfBA1B v C|BDw1KLBD-BD?5d 0GjML?1CxMpK G¤Mzd|BgC|CxBA1B©K/mej?1A1BQA1B <7i. . 0. 2. kqx2. 0. . 2. 2. . . . 1. 2. 3. .
(43). . . . . . . . . . . . 2. 2. i2. i2kl k,l. i. 2. (x2 −vt). 0. . . 1. 0. 3. 1. −1. 2. −1. 3. 2. 2. 1. −1. . . .
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(58) $ A1MLCxrGjfG]MLC|CxBg?5d_C|w1K GC|w10GjngB&KLMz1|B~A1w©C|e!KzMLA1B&Gj?UMLC|e]df|ejr B]; 0Mz?1C|M MzK°C|Bg21KLB&r1KLwUC ?G]dfwU|BgK)A1Bpd|fGJ]GjMLKzKLBglG7jBgn_KLBgC{d|fGjn4dfMLej?1C :+;miU;mlywZbGJ!BDn2KzBgCA1sgr1KLGjngBD-BD?5dfCg;-UbGjM A1e!?1n@sDngxMzdlKzBgC¢sgy8wG]d|MLe!?1CA1w -ejwU!BD-BD?8dlC|e!w1C¢e!|&BASw1? CI+Cd D-BpASsgy8wGdfMLej?1C A1M sgxBg?5dfMzBgKLKzBgClAUw CxBgngej?1Ae!xA1|Bpre!w1 t T M ˆ + Rˆ
(59) )t + Qtˆ = 0, :+;=<!;=< Tˆt − (R <: . 00. 0.
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(61). :;z<!;b: ²°w1MzCgT}`KmGjMLA1B{AUBKLG@dfBgnoOU?1MLy8w1BHA1BgC£ML?5dfsDN!fG]KLBgC°rU|Bg&M D|BDC e!tDOGjBDT<7Y!Y5q4T5ngB4d|d|B ej|w1KLG]dfMze!?rBgx-B4d AmejUdfBD?1ML KSsgy8wGdfMLej?&AUBKLG@+M=dfBDC|C|BC|ejw1C°e!|&B{r ejKzI?1e!&M GjKzB Kze!|Cxy8w1B x BgCxdGjKLMzN!?1s&GJ!BDnw1? G³UB-A1B&CxI-s4dfxMLBjTr ejw1_wU? C|ejKLMLAUB&nDe!&r1|BDC|C|Mz1KLB PSRUT(Y]\°ejw©Mz?1nge!&r1xBgC|CxML1KzB P V1TW\;
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(63) +GjMz?1C|M K T TZBDd|nj;kmBDCxdkwU||MzB <7Y5WjY{y8w1MG K = N + ρv I K = K N + N
(64) K s4doGjUKLM°ngBDCsgy8wGdfMLej?1C_KzB-rU|Bg&MLBDgT)C|wUMzM¢r1Gj GjtDMLBD <7Y!!Y 4; p nDB}BgKzKLBgCDT DmGjM d||e!w+!s2K/msDy8wG]dfMze!?A1B2KLG+M=dfBDC|C|B_r ejw1HwU?1B_ej?1A1B2AUB2FGJI+KzBgMzN!O A1Gj?1CA1BgCHng|MzCxdfGjw+³ G]?1MLCxejdfxe!r BDC2dfejw1|?G]?8d|C Ph<:+T{<7[]\/T°w1?1B s4dfw1AUB ywUM¢dfxe!wUjB A1BgC~GjrUr1KLMznJG]d|MLe!?1CAGj?UC KLG -MzC|BG]wre!Mz?8d@A1BNjI|e!Cxnge!rBgC&ML?1MLG]dfw1xBgC ¢Gj?1NUT(:ji!i5q ;_vnDM°MLKsDdoG]MzdprG]xdfMzn4u wUKLM D|BD-BD?8d£Mz-re!xdfGj?5d°A1B?1BrGjC£?1sgN!KzMLN!BD KmGjngnDsgKLsDfG]d|MLe!?nDBg?5dfxMzw1NjBHrG]£|Gjr1re!xd }nDBgKLKzBpA1B_ke!|Mze!KLMzCgT8!e!Mz MLNjw1|B:+;b:+; Tˆ = (N3 +ρv 2 I)−1 ,. ˆ = N1 (N3 +ρv 2 I)−1 , R. ˆ = N1 (N3 +ρv 2 I)−1 N
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(75). e K BDd N C|e!?5dCxI-s4dfxMLy8w1BgCD;HvK(CgSBg?Cxw1MzdHy8w1B IN BDCxd r e!wU ˆ dfe!wUd n ;°²°w1MLC e!?&r1xBg?1A&KLB{r1xe+AUw1Mzd CxnJGjKLGjMLxBlA1BKSsgy8wG]d|MLe!?A1w&&e!wU!BD-BD?5d /:+;miU;bY rGj IN e!? G xe!wUdfB_}-nDBDdxdfB2sDy8wG]dfMze!? ˆ ξ BDdHe!? e!UdfMzBg?5d ξ · IN ˆ ξ = M ξ · IN ˆ ξ C|e!?nge!&r1KzB4³+Bpnge!? xw1N!w1s`re!w1 ?1MzEGJ!Bgn :+;b:+;mR ˆ ξ + ξ · IN ˆ ξ = 0, ξ · IN BDdJTZrGj@Mz?8d|sgN!|G]dfMze!? BD?8d||BK/mMz?8d|Bg0GjngB x = 0 BDdpK/mMz? ?1M 0e U BDd t TB4d`A1e!?1n ξ T A1MLCxrGjfG]MLC|CxBg?5d Te!?Gj|xMz!B } /:+; :;z< o;²ªGjB ³UBD-rUKLBjTre!w1w1?UB£ej?1A1B°A1B£FG7IKzBgMLNjOpe!? G@K GnDe!?1A1M=dfMLej?Gjw+³nge!?5dfejw1|C ξ(0) = [U (0), 0]
(76) T!B4d KLBDC°sgy8wG]d|MLe!?1Ce!?1AGj&Bg?5dfGjKLBDC :+;b:+;=< C|B`|sDA1w1MzC|Bg?5dH} :+;=<!;mR ; °? wUdfMzKLMLC|Gj?5d :; :+;=< oTe!?r BDwUd|sgCxe!w1A1xB2BD?8d|M D|Bg&Bg?5dKLB`r1xe!1K g&BpA1BgCe!?1A1BDC A1Bc8dfe!?1BDKLB4I A1Gj?1Cw1? 1Mhuv-G]dfsD|M G]w r e!wUHKzBgy8w1BgK)KzBgCA1Bgw+³ A1BD-MhuvBDC|rGjnDBgCHC|e!?5dHe+n u ngw1rsgC)rGjKzB ,g&B C|e!KzMLA1B]T7G]MLCnoOG]ngw1?_GJ!Bgn£w1?1B G]?1MLCxejdfxe!r1MLBªywUM!BgCdCI-s4df|Mzy8w1B <JV (n). (n) 2. . n. n. n. 0. . . n+1.
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(79) :;>p?UA1BgCEKLMz?1sJG]ML|BDClBg?sgKLGjCxd|MLnDMzdfsKLML?UsJGjMz|B 180 o. X x1. x1. X. X. Y. X. Y. x2. LM N!w1xB`:+;mR £>@?1A1B`A1Bcd|e!?1BDKLBDI }KSML?5dfBDx0GjnDBpAmwU?UM=uv-G]d|sg|MLGjwCI-s4df|Mzy8w1B&P=<7i\ rU|eA1w1nDd|MLe!?ASw1?G]ngKLB@}&rG]xdfMzlASw1?ng|MzCxdfGjKe!dfO1e!xO1e!UMLy8w1Bj; r1Gj{fGjrUr e!d}&K/mMz?5dfBg0GjngB Ph<7i]\/; . SMLAUsgBpC|ejw1Cu |GjngBD?8d|B_MzngMBDCxdHA1B`-eA1sDKLMLCxBg KzBgC{nD|MLCdoGjw³G]ngKLsDCgTUje!ML xMLN!=w1xB0 :+;mRU;
(80) G]?1C KLBgC GjwUdfxBgC°ngGjC 0CxM1KLBDC°A1Bgw+³A1Bg&M=u®BgC|r1GjngBDC C|e!?5d£engngwUr sDC°rGj°A1BDC°G]d|sgxM=u G]w+³-A1M sgxBg?5dfC"4TUKzBgC£sgy8wG]d|MLe!?UC£e!?UAGj&Bg?5doGjKzBgC£?1BCxe!?5dlr1Kzw1CngGjrGjUKLBgC£A1BHN!sg?1sD|BD K/msDy8wG]dfMze!?A1B2KLG&Mzd|BgC|CxBj;H²e!wUKLBDCe!?UA1BgCHA1Bcd|e!?1BDKLBDIre!K G]|MLCxsgBDCHAG]?1Cw1?r1K Gj? AUB©CI+&sDd||MzBnDe!&w1? Gjw+³ A1BDw+³ C|e!KzMLA1BDCgT@ej? rBgwUd-GjKLNj|s dfejwUd©Pb:j[\pdf|ejwU!BD K/msDy8wG]dfMze!?B4³UGjnDd|B A1B-K G +M=dfBDC|C|B* :+;miU;=<!< pBDd_sgKzw1ngMzA1BgKLB&r1|ej1K D-B]T(je!ML MLNjw1|B :;mV1;ª²e!wU£nDBgKLG`MzK1?1B{0GjwUd r1GjC O1sgCxMzdfBD£}`xsgCxe!w1A1xBHG]?GjKzI8d|MLy8w1Bg&Bg?5d KzBgC°A1BDw+³&y8wGju d|MLy8w1BDCA1B¢kO1|MzCxdfe ZBDKT7w1?1B°d noO1B y8w1M!C|B xsD DKLB,Dd||B sDd|e!?1?G]-&Bg?5dCxML&r1KLB]; .)BDC)1M=u -G]d|sg|MLGjw+³ C|e!?5dwUdfMzKLMzC|sgC{Mz?5dfBg?UC|MzjBg&Bg?5dHAGj?1CKSML?1AUw1Cxd||MLBA1BgCC|BD-Mhuvngej?1A1w1n4dfBgwU|CgT Nj nDB2Gjwr1xe+nDsgA1sA1B ngejKLKLBpC|Gj?1Cnge!KzKL B oT1y8w1M(r BD|&BDdA1BKLMzBg{A1BG]?1M D|BprBg|-Gu ?UBg?5dfBHBDdlxMLN!MzA1B{A1BDw+³ nD|MzCxdoG]w+³&Bg?-KLBgC£re!KLMzC|CfG]?8d£CxM 1MzBg?-ywZmMzKLC CgmG]d|dfGjnoO1BD?8dlrGj£KLBgC ej|ngBDCEA1BpjG]? A1BD ¤GjKzKLCD; . . . 2. . . . . #
(81)
(82)
(83) , . . . . BDC&ej?1A1BgCAUBcnoO1e!Kzd|B C|B r1xe!rGjNjBg?5d&}KSML?5dfBDx0GjnDB ASw1? A1Bg&M=u®BgC|r1GjngB Cxe!KLMzA1B BDd AZmw1? A1Bg&M=u®BgCxrGjngB`BD-r1KzMASw1?¡w1MLAUBr1Gjx0GjM=dJ; °KLKzBgC{C|ej?8ddf gCEr1xsgC|BD?5dfBgCBg?N!sge]u rUO8ICxMLy8w1B2B4dBg? d|BgnoO1?Ue!KLe!NjMLBpA1BDCHngGjrUdfBDw1|CD;lvngMKLGnge!?1AUMzdfMze!?Gjw+³KzML&MzdfBDCBDCxdHywUB KLGnge!&r ejCfGj?5dfB?1ej|-GjKLB A1w A1sgrUK GjnDBg&Bg?5d&BDd-A1B KLGnge!?5df|GjML?5d|BBDCxd-nge!?5d|ML?8w1B } d|fGJ!BD|CKSML?5dfBDx0GjnDBjTUdfGj?1A1MzC{y8w1B`K Gnge!?5d|fGjMz?8d|BpA1B`ngMzCfGjMzKLKLBD-BD?5dlCg IGj?1?8w1KzBj; °?wUd|MLKLMzCfGj?5dKLBDCHsDy8wG]dfMze!?1Ce!?1AGj&Bg?5dfGjKLBDC :; :+;=< {e!? rBgwUd|sDC|e!w1AU|B Ph<7R]\(KLB rU|e!1K g&BEAmwU?1Be!?UA1BHAUB@c+noOUe!Kzd|BHre!K G]|MLCxsgB{AG]?1Cw1?-r1K G]?-A1BCxI&sDd||MLBA1w-C|e!KzMLA1B B4d|BgrU|eA1w1MLxBpA1BgCEA1ej?1?1sgBDCHB ³+r sD|ML&Bg?5dfGjKLBDC{e!UdfBD?8w1BgCrGjEAmGjwUd||BgCDT1!e!Mz MLNjw1|B :; q+; <7q. . . .
(84) :+;X>@?1A1BDCHKzML?1sgGjMLxBgCBD? sDK GjCdfMzngMzd|s@KLMz?1sJG]ML|B v (km/s) 1.5. Rayleigh. Y∗. PSfrag replacements. Stoneley. 1.45. C ρ . X∗. x 3 ρ∗ ∗ Cij. θ∗. 1.4. x1. θ. ij. 1.35. X Y. θ 20. x2. 60. 40. 80. LM N!wU|B~:+;SV >@?1A1B~A1B-cd|e!?1BDKLBDI}K/mMz?5dfBg0GjngBAUB&AUBgw+³QCxe!KLMzA1BgC`G]?1MLCxejdfxe!r BDC 0r1Mz?
(85) e!w1N!KLGjC 2 0ngGj|e!?1BBDr eJ³I Pb:j[\; .)G MLN!wU|BA1B~A1xe!Mzd|B|BDr1|sDC|Bg?5d|BK G]GjxM G]d|MLe!? A1B`K GMzdfBDC|CxB 6df|GjMzdEsDrGjMLC"lGJ!Bgn_KmGj?1N!KzB@A1B`ngejw1r B θ A1wnJGjx ej?1B`Bgre7³Ij; .°mGj?1N!KzB A1Bnge!wUr BA1wQr1Mz?
(86) e!w1NjK GjC@BDCxd U³+s~} θ = 0 ;2>p?je!Mzdpy8w1BK/mej?1A1BA1B&c8dfe!?1BDKLB4I ?mB ³+MLCxd|By8w1B~r e!wU ; .BDCpnge!w1x BDC`Bg?QdffG]Mzd 1?xBgr1xsgCxBg?5dfBD?8d2KLBDC jG]|M GdfMLej?1CA1B`K/me!?UA173BpA1B<FHθGJI<KLBDML107 N!Ore!w1{noOG]ywUB_Cxe!KLMzA1Bpr1|MzC{C|sDrGj|sD-BD?5dJ; . .
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(146) G]?1C_KzBnJG]A1|B~A1BDC_e!?UA1BgC`?1e!?uvr1xML?1nDMLrGjKzBgCDT DbG]M -MzCpKLBDCpsgy8wG]d|MLe!?1CpAUw©&e!w+u jBg&Bg?5dC|e!wUC_KLGe!|&BA1B-cd||e!OTB4d DbGjMªr1wQ|sgCxe!w1A1xB-AUB?1e!1xBgw+³r1|e!UK g&BgC Nj nDB~Gjw+³QsDyw1G]dfMze!?1Cpe!?1AG]-BD?8dfGjKLBDC :; :+;=< ; 0Mz?1C|M°e!?QrBgwUd`xsgCxe!w1A1xB-BD?8d|M D|B4u &Bg?5dHKLB`r1xe!1K D-B`ASw1?1Be!?1AUB2ML?Ung|sD-BD?5doGjKzB`}-K G~C|wUx0GjnDB_ASw1? C|e!KzMLA1B`C|ejw1-MzC} wU?1B{N!fG]?1A1B{A1s4e!|-G]dfMze!?2d||M=uvG³+M GjKzBjTC|w1M=MLBlASw1?~N!|Gj?1A~ngMzCfGjMzKLKLBD-BD?5dJT!e!Mz MLNjw1|B R+; :+T)Kze!|CxywZmBDKLKLBBDCxd_r ejK GjxMLC|sDBAGj?1Cw1?r1K G]?rU|ML?UngMLr1GjK{Pm:ji]\ 0ej?1A1B-}A1BDw+³ngej~u re!C|Gj?5dfBgC"£e!w&KLej|C|y8wSBgKzKLB{CxBr1xe!rGjN!BEAG]?1C¢?ZmMz-re!xd|B{y8w1BgKzKLBEA1MLxBgn4dfMLej?-ASw1?-r1K Gj? rU|ML?UngMLr1GjK°Pm:jR]\ e!?1A1B_}df|ejMLC{ngej-re!CfG]?8d|BgC"4TXnge!&&B@rGjEB4³+BD-r1KzB`AGj?1CEw1? r1K Gj? AUB_N!|Gj?1AngMzCfGjMzKLKLBD-BD?5dJT+je!ML MzN!w1xB_R+;z<!; 0Mz?1C|M DmGjMr1w Bg?5dfxB2Gjw+df|BDCHxsgCxe!w1A1xB2K G y8w1BDCxd|MLe!?©A1BgCe!?1A1BDC_?Ue!?+uvrU|ML?UngMLr1GjKLBDCpA1BFGJIKLBgMzN!OQAGj?1Cw1?©C|e!KzMLA1BA1B ee!?1B4I8u FEMzKzML? 0C|ejwU!BD?8d@wUdfMzKLMLCxs`r e!wU&e+A1sDKLMzC|BgEKzB_ngGje!wUd|noO1e!w1n HA1sDej|&sjTZwU? r1|ej1K D-B rU|e!re!C|s`rG] K GJML? <7Y![!RB4dE|BDCxdfse!wUjBgdJ; >@? rBgw+dGjw1CxC|M£CgSML?5dfsD|BDC|C|BD} KLG nge!? 1N!w1fGdfMLej? C|wUMz]Gj?5dfB Pb:<g\ 2A1BDw+³©A1Bg&M=u BDC|rG]ngBgCDT¢0GjM=dfCAUw ,g&B -G]dfsD|MLGjw¤O5Ir BD|sgKLGjCxd|MLy8w1B]T¢e!?5ds4dfsC|w xBDdfC&} KLG ,D-B rU|s4u®A1sDej|-G]dfMze!?GJ!BDn&dfGjw+³QA1B~A1MzK G]dfG]dfMze!?rU|ML?UngMLr1Gjw+³ λ T λ T λ T)GJ]Gj?5dA ,4dfxB nDe!KLKzsgC|MzN!MLA1BD-BD?5d_KzB-Kze!?1NASw1? r1K G]? r1xML?1nDMLrGjK°nDe!&w1?; kBDdxdfB nDe!? Njw1fG]d|MLe!? CxB_xBDd||e!wUjB_A1Gj?1CKSML?1A1wUCxdfxMLBpA1BDCHre!K=I+ gxBgCDTe ej? wUd|MLKzMLC|BpKLGw1C|Mze!? 0noOGjw GjNjB AUB_!ejKLw1&BjTXA1B`|MznDdfMze!?TsDKLBgn4dfxe!G]N!?1sDd|MLy8w1B]TB4dfn]; r ejw1 vnge!KzKLBD{CfGj?1CHnge!KzKL B o;vnDMT :]R .
(147). . . . . . .
(148). . . . . . . . . .
(149). . . 1. . 2. 3.
(150).
(151) RU;X>@?1A1BDCHKzML?1sgGj|MzC|sgBDClBg?sgKLGjCxd|MLnDMzdfs?1e!?+u®KLML?UsJGjMz|B 1.2. γ = 1.5 γ = 1.0 γ = 0.5. 1.1. X1. 1. X3. 0.9 0.8 0.7 0.6 0.5. X2. 0.4 0.3 0. 20. 40. 60. 80. 100. 120. 140. 160. 180. LM N!wU|BQRU;=<
(152) Bg&M=u®BgC|r1GjngBQO5Ir BD|sgKLGjCxd|MLy8w1BBg? N!fGj?UA nDMLCfG]MLKLKzBg&Bg?5d x = X T T T°e γ BDCxd~K Gy8wGj?5dfM=dfs A1BngMLC|GjMLKzKLBD-BD?8d -ej?¤r BDwUd x = X x = X + γX r BD?1C|BDrGj£B4³+BD-r1KzB}w1? G]1C|e!x BDw1AUBHCxBgngejw1C|CxBgC{C|MzC|&MLy8w1BDC¢Cxe!w1CwU? d|ML&Bg?5dJ; ` ngBQ} KmGjnDe!w1Cxd|e]uvsDK GjCdfMzngMzd|sjT{e!? rBgwUdA1s4dfBD|&ML?1BD C|e!? sDdfG]dA1BA1s4e!|-G]dfMze!?; 0ML?UC|MTK G+M=dfBDC|C|B@]GjxMLBHBg? e!?1n4dfMze!? A1BpK/bGj?UN!KLBA1Bpr1xe!rGjN5GdfMLej?BDdlA1BpK Gyw1Gj?5dfMzd|s A1B¢nDMLC|GjMLKzKLBg&Bg?5d )rGj(B4³+BD-r1KzBjT]KLBgC(-G³+ML-GlBDd-Mz?1ML-GlA1BKLGEM=dfBgCxC|B¢A1B¢K/mej?1A1B£A1B C|w10GjngBEe!?5d£KLMzBgwAGj?UC£KzBgC°A1Mz|BDnDdfMze!?1C°A1BEr1Kzw1C N!fG]?1A1BgC A1MzK G]dfG]dfMze!?2B4d£nge!&r1|BDC|CxMLe!?T |BgCxr BDnDd|Mz!BD-BD?5dJTXA1e!?5de!?r BDwUdA1e!?1npd||e!wUjBgEKSe!xMLBg?5dfG]dfMze!?; . . . 2. 2. 3. 3. 1. 1. 1.
(153). . 1. 1. 8. 1. v2. 7. µ1. 6. µ3 5. µ2 4. 3. 2. 1. φ 0. 0.2. 0.4. 0.6. 0.8. 1. 1.2. 1.4. 1.6. cisaillement. LM N!wU|B_RU; : 0Hxd g|B2C|e!w1&MLCxB}wU? N!fG]?1AngMzCfGjMzKLKLBD-BD?5d E]GjxM G]d|MLe!?A1BKLG&Mzd|BgCxC|B 0?1e!xG]KLMLCxsgB¢rGj°fG]r1r ejxd£}pngBDKLKLB{AZmw1?UBej?1A1BEA1Bl!ejKLw1&B ªASw1?1BEe!?UA1BGjnge!wUCxdfMzy8w1B A1B-Cxw1x0G]ngB&Bg?©ej?1nDd|MLe!?QA1B&K Gy8wGj?5dfM=dfs~A1B&ngMLC|GjMLKzKLBD-BD?8dg;->p?Q!ejMzdy8w1BKLGr1Gj|e!M Gjxd|sg|MzBgKzKLB{ASw1? O1e!&&BAUBpWjiG]?1CCxB xMLN!MzA1M 1B < gxB@GjCI-rUd|ejdfB!BDxdfMznJGjKzB °1MLBD? G7]Gj?5dy8w1B nDBgKzKLBAZmw1? O1ej-&BA1B :]VQGj?1C /: g&B GjCI-rUd|ejdfB 4;QvngM/T KmGjd gxB BgCd -eA1sgKzMLCxsgBr1GjlKLB-eA gKzBA1B pBg?5dgT1y8w1M|BD?1A df gC{1MzBg? ngej-rUd|B@A1wfG]MLA1MzC|C|BD-BD?5d A1BgC{!BDML?1BDCHCxe!w1CEKSB+ BDdASw1?1Bpd|Bg?1CxMLe!?; :]V . . . .
(154). . . .
(155). . .
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(157)
(158)
(159) #
(160)
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(163)
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(165) $ ) MzC|ejd||e!rBGj|UMzdf|GjMLxBj; .°mMz?8d|sg ,Dd¢A1BnDBgCs4dfw1AUBgCBDCxdl}KLG`e!MzC B4³+r sD|Mz-BD?8dfGjK ªKzM GjMzC|e!? AUB BgKzKlr ejw1A1BDC&&sDdfGjw+³¤|BgnDw1Mzd|CdfBDKLCy8w1BGjKLwU-Mz?1MLw1T(ngw1M=+xBjT£tgMz?1n KzM GjMzC|e!? AZ °|Mzn 8C|Bg? r e!wUAUBgCng|MzCxdfGjw+³Q-GjngKzsgC KLM G]MLC|ej? AmGjMLxB&re!w1pKzBgC`&Bg1|Gj?1BDCAUB NjKLe!1wUKLBgC{xe!w1N!BDCgTB4dfnj; XBDddfO1sDe!|Mzy8w1B £KLGKLM G]MLC|ej? ASML?1nDe!-rU|BgCxC|Mz1MLKzMzdfsHBgCdBD? BZB4d B ³+ngBgr+dfMLej?1?1BgKzKLBnJGj£K G`rGjdfMzBAUwdfBD?1C|BDw1A1BDCnDe!?5dffG]ML?5dfBDCy8w1MKLw1MBDCxd{G]C|C|engMzsgBBgCd Cxr1O1sD|MLy8w1B]TXngB`y8w1M?SBgCxdHrGjCE?1sDngBDC|CfG]ML|BD-BD?5dKzB@nJGjCre!w1{w1?1B`KzM GjMzC|e!? Njsg?1sD|MLy8w1B]; ( #
(166)
(167)
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(169) C y8wG]?1A s BgCxdnDe!-rUKLB4³+ωB]T1KmGj&r1KLM=dfw1A1BHBgCdG]-e!dfMzB 0e!wGj&r1KzM sDB GJ!BDn_K/mBDC|rG]ngBj; ke!&&Be!? K/bG+wZT1KLBDCe!?1AUBgC )
(170)
(171) xe!w1BD?8dlw1? KzBr1xsgre!?1A1sDfGj?5d{BD? sDK GjCdfMzngMzd|sj;(²ejw1ªnDBgC e!?UA1BgCDT!KmGj&r1KLM=dfw1A1BjG]|MLB£C|Mz?8w1C|e!MzAGjKzBg&Bg?5d(AGj?1CK GEA1MLxBgnDd|MLe!? AUBr1|e!r1GjN5G]d|MLe!? BDd BDCxdG]dxdfsg?8w1sDBQAGj?1C wU?1BQGjwUd||B A1Mz|BDnDdfMze!?T{!ejML MLN!w1xB RU;SV1; |ejwU!BD`d|e!wUd|BgCpKLBDCpC|e!KzwUdfMze!?1C@AUBgCpsgy8wGdfMLej?1CpA1wQ-ejwU!BD-BD?8d`Cxe!w1Cpe!x-BAZmw1?UB :jq . . . . . . . . . . .
(172).
(173). . . . . . . . . 1. . 2. ω(sn·x−t). . .
(174). . . .
(175) RU;X>@?1A1BDCHKzML?1sgGj|MzC|sgBDClBg?sgKLGjCxd|MLnDMzdfs?1e!?+u®KLML?UsJGjMz|B. LM N!wU|BpRU;mR £>@?1A1BDCHAUB`je!KLwU-BpO1ej-e!N g?1BDC e!?1A1BQML?UO1e!&e!N g?UB BgCdw1?UBQdfGjnoO1BGjxA1w1BjTA1w 0G]MzdA1BDC?Ue!1xBgw1CxBgCA1MLxBgnDd|MLe!?UC BDd`ML?Unge!?1?8w1BDCg; ?1B~r1|engsDA1w1|B~CI+CdfsDG]d|MLy8w1B~A1B~|sDC|e!KzwUdfMze!?QG sDd|s~sgK G] e!xsgBrG] e!w1KLGj?1N!BDBDd GJI!BDC <7YjY!R4TBD?2rGjdoGj?5dA1B£K GE|BgrU|sgCxBg?5doGdfMLej?2C|wUMz]Gj?5dfB£A1BgCe!?1A1BDC ML?1O1ej-e!N g?1BDCgT B nj;Snj; /RU;mRU;b: + u=A vngMTKzB jBgn4dfBgwUªA1B re!K GjxMLC|G]dfMze!? A rBgwUd ,Dd||B ngej-r1KzB4³+BjTA1B£ ,D-B°y8w1B£K G{r1wUKLCfGdfMLej? BDd°KzB£jBgn4dfBgwU°A1BgC KzBg?5dfBDw1|C ; .BDCª!BDnDdfBDw1|C nDe!-rUKLB4³+BDCªC|ej?8d°Gjr1rBgKLsDC " ω BDd_KLBgwU2GjKzN gU|B&BgCxd2rGje!MLC`SA1sD|e!wUdfGj?5dfB GjML?UC|M A1Bgw³ UMz!BDnDd|Bgw1xC A BDd B rBgwu !Bg?5d ,Dd||B }KLGejMLC r1GjfGjKzK DKLBgC * A × B = 0BDd&e!dfO1ejN!e!?Gjw³ A · B = 0 nge!&-B A = (1, M , 0) B4d B = (2M , −2, 0) ywUM¢r1Kzw1C2BDCxdgT°ngBgC2A1Bgw+³©!BDnDd|Bgw1xCBg? rGjxd|MLnDw1KLMzBg`C|e!?5d vMLCxejdfxe!r BDC A · A = B · B = 0 ; ?1BejMLC2nDBDdxdfB GjKzN gU|B GjC|CxML&MLKLsDBjTKSe!Ud|Bg?5dfMze!? BDdEKLGngK G]C|C|M nJGdfMLej? CxICxd|sg-G]dfMzy8w1B`A1B@dfe!w+dfBgCEKzBgC{C|ejKLwUd|MLe!?1C C|B`A1sgxe!w1KzBg?5dA1Bp0G#ge!??Gdfw1xBgKLKzBj; 0HML?1CxM DbGjMprUw e!Ud|Bg?1Mzd|e!wUd|BgCKLBgCC|ejKLwUd|MLe!?1CA1BK G e!x-B /R+;bRU;b: re!w1w1? G]d|sgxM GjwA1B ee!?1B4I5u FEMzKLMz? ML?1nDe!-rU|BgCxC|Mz1KLB )A1s4e!|&s@Pmq\UBDd re!w1ªw1?-G]dfsD|M G]w A1B GjA1GjG]|A 0nDe!&r1|BDC|C|Mz1KLB _A1s4e!|&sPS[]\;
(176) B r1Kzw1C DbG]MlsDdfGj1KLM¢y8w1BgKdvIrBA1B G]d|sgxM GjwT w1?1Be!MzC@A1sDej|&sjTrBg|&BDd@K G r1xe!rGjN5GdfMLej? ASe!?1A1BDC_r1KLGj?1BDC KLej?1N!Mzd|w+u A1ML?G]KLBgC A × S = 0A1Gj?1C{dfe!w+dfBgCEKzBgCEA1MLxBgn4dfMLej?1C`P=<JY]\; .BDC@Gjr1rUKLMLngG]dfMze!?1CEA1B_K G&d|O1sgej|MLBA1BDC@e!?1A1BDCMz?1O1e!&e!N D?1BgCC|e!?5dpMz?1?1e!21fGjUKLBgC nge!&-Be!? r BDwUd&KLB ngej?1CxdfG]dfBD&MzngMlB4d&rGjB4³+BD-r1KzB}K GKLBDnDdfwU|B A1BKmGjdfMLnDKLB-A1B |BDw1B`rG]
(177) BgngKzBgxnB4dHGjK; /:ji!i5q4; . . . . . . . ω(S·x−t). . . . . . . .
(178). . . . . . :j[.
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